Other culprits behind slow acceleration may include a slipping clutch, the transmission system itself, or an unexpected or unrelated problem which may surprise even veteran mechanics. This site is dedicated to the all new 2015+ Ford Mustang EcoBoost. Just bought car. Ford named in class action over vehicles with 5. I have a 98 mustang gt 4. 99 silverado with 5. Rough Low Idle and Engine Shakes, Hesitation and Lack of Power. An engine with bad rings will also show signs of power loss, especially when going up hills. Shifts fine. Holley® has been the undisputed leader in fuel systems for over 100 years. This feature is not available right now. When Driving (Especially Accelerating) the car sputters. The flickering is a result of voltage surges. About 3 months ago my Mustang starting sputtering and backfiring on acceleration pretty bad. My theory is that the SN95 Mustang was always intended to get the 4V motor but with out high volume runs of FWD 4V I4s econoboxes to spread the costs around of those complex heads, it became economically unviable. During initial acceleration after a left turn, shifting from. Timing was set at 10-12 BTDC. 8L Ford car (pick up, van). Idles fine in park but rough in gear. The majority of misfire conditions have their root cause here. No acceleration at all when this happens. Mustang Track Apps™1,2 monitors your g-forces, braking times and acceleration times in quarter-mile and 0-60 increments. This happens between approximately 1,000 and 2,000 rpm. Hey, I just joined the forums because I am having an issue with my Mustang. Mustang GT. A new to me 2006 Forester XT Limited 5spd with 146k miles. my 2001 mustang v6 sputters and shakes in reverse and at random when accelerating, however it does not do it while sitting in park even if I rev the engine. With a compromised combustion process, one of the first vacuum leak symptoms you may notice is poor acceleration performance. If any one of the coils is broken or has a crack on it, it will cause the engine to sputter. My 2004 Mustang is sputtering when I accelerate. Ran smooth for the first 17 miles. 45 gap whereas my others were. Top 10 Causes of a Rough Idle 1. What causes a Ford Mustang 5. Also I hear fuel pump. To test the newer style TPS (1995 and newer), take a look at this tutorial: How To Test The Throttle Position Sensor (2. On out trip out West in 2003, my Flair M/H started sputtering and losing power, a quick look at the gauges indicated that the battery voltage was very low and going lower all the time. i got in it this moring and it idles great but as soon as i get on it it seems to sputter or misfire all the way up throught the power. I've changed the fuel filter, air filter, pcv, and plugs but. Looked it the throttle body and didnt see any puddle of oil so not sure of the intake gasket is bad. Your engine could be low by just 3-4 quarts causing a hard start. Im not sure if its the O2 sensors because the check engine light is not on, and its not throwing any more codes. The van engine sputters between 35 and 50 mph whether I'm on flat road or going up an incline. Sputtering. Sputtering under high manifold pressure conditions (acceleration, high speed running) is often due to high voltage breakdown; spark plugs, plug wires, coil or distributor cap. I am wondering if someone can help. 4 liter FI 4 cylinder 5 speed extended cab and just kind of looking for some suggestionsthe truck has started sputtering really bad under acceleration and worse when engine is coldthe more I push on the gas the worse it gets until I let up unless I let it chug for 10 seconds then it will come out of it at roughly. , you may feel like you've wasted your money on a performance part that didn't improve performance. Mar 29, 2013 · Ford sued over problems with vehicle acceleration. My 73 Mach 1 with 351 Cleveland is sputtering and hesitating at acceleration especially hard acceleration and at beginning of driving it at low speed. How to solve engine hesitation and stumble problems on the 90+ By Steve Chong. 1996 Mustang. Carburetor: Spitting/sputtering/cracking is an indication of the fuel/air mixture being too lean. 1986 mustang Svo runs poor. What Causes Backfiring on Acceleration? Backfiring during acceleration occurs when ignition takes place in the intake or exhaust instead of the combustion chamber. Car: 2008 Maxima SL KM: 92,000 Problem: After starting the engine on a normal day, the engine is relatively quiet and RPM is stable around 1000. ) problem and can not be fixed with air/fuel mixture changes. Had a severe sputtering problem to when accelerating but after changing plugs, wires, fuel pump and filter, fixed 2 vaccuum leaks, the sputtering upon accelerating is the only thing it helped,still left with rotten egg smell and sputtering when drivin in overdrive. its running rich and i can feel it jerk every few seconds at a steady spe. I have a 98 mustang gt 4. Sputtering. No acceleration at all when this happens. At a steady speed, 25mph, 50 or whatever it goes into eco mode, it seems like it is hesitating/ sputtering (hard to describe) and when you step on the gas it seem to be a slow response to get it to get going. A piece of junk could have slipped past the fuel filter or air filter and momentarily shorted the spark plug - it went away quickly and never returned. I believe I got a massive vacuum leak. It Started Doing This Mostly Between 35 And 40. Hey guys and galsI have an 86. In gear, with my foot on the brake, the idle would surge from 600-900, maybe a 2 second cycle. This paragraph applies to an instantaneous bog, hesitation, or stumble upon acceleration. It most noticible at low speeds in OD, 1200-1500 rpm and especially on a hill or under light acceleration. Mustang GT. acceleration synonyms, acceleration pronunciation, acceleration translation, English dictionary definition of acceleration. A Very Special Ford GT40. 351M/400 Tips and Tricks So you've got a 351M/400 in your truck, these were found in 1977-1982 Ford Bronco's and the F-Series. This will cause the cylinders to misfire and it'll throw the P0300. Average repair cost is $1,770 at 55,000 miles. Rough Idle, hesitation on acceleration, loss of power When I start the engine its starts up right away with no issues. If the sensor is not giving an accurate reading the computer will open the EGR an incorrect amount. In simple terms, this component detects the amount of air being drawn into the engine so that the control computer can determine the correct amount of fuel to feed the engine. Solution #3: Again, if you’re running a larger camshaft, engine vacuum will get very low and make the power valve open too quickly. 2L, has a pronounced hesitation/sputter in the first few seconds of acceleration in the morning. You may have to register before you can post: click the register link above to proceed. I recently changed the fuel filter and my problems went away for almost a week. We also cover the Ford Ranger, Explorer Sport Trac, Mercury Mountaineer, Lincoln Aviator, Mazda Navajo, Mazda Pickups, and the Aerostar. Tap the to learn more about the most common Ford Mustang problems. It used to sputter and hesitate on acceleration but then clear out and drive fine. The Ford Ranger/Bronco II 2 Your Ranger/Bronco II is stalling/dieing or sputtering when hot but runs when it cools off. I just recently bought a Ford Taurus. 3L Ranger, Mustang, B2300) (at: troubleshootmyvehicle. Mass air flow sensor?. My 2006 mustang gt is sputtering on acceleration. I've just completed the rebuild of my engine and am noticing some hesitation/sputtering when driving. At a steady speed, 25mph, 50 or whatever it goes into eco mode, it seems like it is hesitating/ sputtering (hard to describe) and when you step on the gas it seem to be a slow response to get it to get going. Available as a coupe only, the SS Supercharged featured the 2. vacuum was around 16 Hg. The majority of misfire conditions have their root cause here. Seems to idle fine, no surging. 3L Ford Ranger or Mustang, is the check engine light shining nice and. Transmission Filter: Same as above, but different solution. What's the most common leak on a 3v 4. 8L Ford car (pick up, van). The EGR system functions when you are maintaining speed. With that being said can. In the dash there are chrome controls for the air. Hey guys my car just started this, it sputters if i put pressure on the gas pedal and will back fire and will not run normal and after this the check engine light came on. Reaching 180°F coolant & 100°F intake temperature, the car starts sputtering during acceleration. Express Auto Inspections says: While modern vehicles use a fuel injector system to burn gas, many older cars use a carburetor to process fuel. I experienced lack of acceleration, sputtering, 2002 Ford Expedition Sputtering When Accelerating: Engine … 2002 FORD EXPEDITION SPUTTERING WHEN ACCELERATING. Immediately we assume the worst and fear a bill in the hundreds. Sudden acceleration by the driver, changes the intake air flow rate through the CAC which causes the engine to pull in more air. Then about two weeks later, it starts acting all wierd like it starved of fuel or something. 6L is a good motor but the Mustang GT deserved better (and probably the T-Bird and Cougar too). Afterwards it ran like a champ. Ford sued over problems with vehicle acceleration. It follows a typical path from the float bowl through the main jet, into what is called the idle well, which is a small. I took it to the Chrysler dealership and they replaced the cam and crank sensors and gave it a clean bill of health. I have a 2006 5. Made me think of carbon'ed up plugs and I dismissed it at that. Got a problem you can't fix? Post here and one of our members will answer as soon as possible. However the list of causes of poor acceleration does not end here. The purpose of the "service engine soon" light is to warn the operator that sensors in the vehicle have detected a malfunction. Out of no where it starts sputtering, rough idle, no power and running very rich very. 4L 3v if that helps, I have 90K miles. It would be nice if Ford had a diagnostic code scannerI could plug in while driving to find the code when wrench light comes on. 2007 Lincoln MKZ vehicles may exhibit a hesitation during acceleration from a stop or at slow speeds. Ran smooth for the first 17 miles. This could happen during acceleration, driving downhill, or gear change. Engine sputtering under low rpm acceleration, and twitchy tach When I'm accelerating (under load) from a low rpm, the car sputters and hesitates. Acceleration is a vector quantity; that is, it has a direction associated with it. mustang _eater12 0 heard of it botherin the acceleration. com here and today I have the cold air intake system from Airaid for all 99-04 Mustang GTs. They are not all the same so removing the sensor on the affected vehicle and jotting down the number is the best course to follow. Does anyone know how to work the air controls on a 1966 mustang? I'm sure this is a standard Ford part. If there is no gasoline in the bowl, the pump will not work; and this would give a false result. The Ford Ranger/Bronco II 2 Your Ranger/Bronco II is stalling/dieing or sputtering when hot but runs when it cools off. 5 out of 5 stars. If the sensor is not giving an accurate reading the computer will open the EGR an incorrect amount. 99 silverado with 5. 0L w/ 5spd manual Only code or P0136, P1131,. (Page 1 of 2). I noticed recently my 07 GSXR 600 is sputtering pretty bad when running at low RPM. Sputtering under high manifold pressure conditions (acceleration, high speed running) is often due to high voltage breakdown; spark plugs, plug wires, coil or distributor cap. 2015 ford mustang is losing acceleration and brake lights stay on, 2016 ford mustang loosing power, causes of limp mode 2018 ecoboost mustang, ecoboost mustang intercooler install psi lose, ecoboost mustang losing power at higher boost, f150 ecoboost wrench comes on and lose turbo, mustang ecoboost engine loosing power, mustang ecoboost losing. When we first see this little light on our dash we get a little worried at the potential cost of the repair. 0 HO in there now), I had a lot of hesitation on taking off abruptly and finally figured out that it was where the vac. 115K miles, bought car with 65K. I've changed the fuel filter, air filter, pcv, and plugs but. My car turns over and starts, but sounds pathetic as it idles. Or it could signal more serious auto problems — something more costly, like steering or suspension issues. 40 which I've read runs fine with an HEI distributor. The watered-down fuel in a car can make it sputter and behave as if it has lost power. Maybe it's not a bad idea to check/ replace your fuel filter as you mentioned it sat. Define acceleration. 2005 GT sputters with 3rd gear hard acceleration Ever since I took my mustang to the race track I noticed on the way home on the highway while traveling around 60mph when I drop the car down into 3rd gear and hammer on the throttle the car will "hesitate" or "sputter" not sure if either of those are the rite two words but it feels like it is. When you install a tuned exhaust system, your car, truck, or SUV feels faster and more responsive. The act of accelerating. Always begin replacing the easiest and cheapest part first, which is the fuel filter. No acceleration, sputtering, is it the fuel pump - × We use cookies to help our site to work, to help us understand how it is used, and to tailor advertising on this and other sites. SN95Forums The Only SN95 1994-2004 Dedicated Ford Mustang. I've recently acquired a 1995 Mustang GT 5. Looked it the throttle body and didnt see any puddle of oil so not sure of the intake gasket is bad. Could be dirty fuel injectors, faulty fuel pump & clogged fuel filter, dirty MAF, faulty Oxygen sensor, or even a vacuum leak. Vacuum leak- If your Mustang has a vacuum leak, it can be very difficult for it to get the right air/fuel mixture. A Very Special Ford GT40. I never replaced anything else, other than an oil change. I have a 2002 Ford Mustang (3. What could cause my car to misfire under load, like climbing a hill? Answered by: Carmen , An Expert in the Troubleshooting Category A misfire under load complaint can usually be broken down into 2 categories. It more affects my idle, which is a little more rough with a/c. Car Bucking During Hard Acceleration. to owner generated reviews, discussion, tech tips, and more! The #1 Ford Explorer enthusiast resource on the Internet since 1996. When we first see this little light on our dash we get a little worried at the potential cost of the repair. Any idea why?. The misfire is causing the hesitation; you just need to find out what's causing the misfire. Download Sputtering sounds 2,099 stock sound clips starting at $2. 0L w/ 5spd manual Only code or P0136, P1131,. An engine misfire is a sensation that you should instantly recognize. Updated on January 27, 2019 ( dash board lights and no acceleration. I believe I got a massive vacuum leak. This is a discussion on Car Bucking During Hard Acceleration within the Dodge Dart Mechanical Problems forums, part of the Dodge Dart Forum - Pit Row category; I run premium in mine and I still feel it surging sometimes. If any one of the coils is broken or has a crack on it, it will cause the engine to sputter. 115K miles, bought car with 65K. What could cause my car to misfire under load, like climbing a hill? Answered by: Carmen , An Expert in the Troubleshooting Category A misfire under load complaint can usually be broken down into 2 categories. Engine sporadically sputtering/hesitating/chugging under accelration and/or uphill I did a tuneup (plugs, wires, coil, cap, & rotor) about 6 weeks ago. In gear, with my foot on the brake, the idle would surge from 600-900, maybe a 2 second cycle. This condition is primarily caused by dirty air filters, but it could also result from the incorrect fitting of after-market accessories such as exhaust systems, air filter systems, or replacement carburetors of a different type or size. This feature is not available right now. Sputtering Pass Bys, Bursts of Acceleration, Revs, Distant Maneuvers P51 Mustang. Every now and then when I would sit at at idle, especially soon after starting my car, my Mustang would kind of sputter. The problem could stem from the ignition secondary system, which includes such parts as spark plugs, spark plug wires, distributor cap and rotor. A mass airflow sensor (MAS) determines the mass of air entering a vehicle's fuel injection engine, and passes that data to the Engine Control Unit, or ECU. Ford Taurus Sputters. OK, in a nutshell. Made it better, but not perfect. Mass air flow sensor?. 8 litre 2003 Chevy sputters during acceleration. On out trip out West in 2003, my Flair M/H started sputtering and losing power, a quick look at the gauges indicated that the battery voltage was very low and going lower all the time. 8L V6, 146K miles. For your 94-04 SN95 we are consistently putting out new content to better help you with your installation and general knowledge of your vehicle. It was getting late in the day and lucky I was at a near-by exit and able to pull off the road to a safe place. It is often said that for an engine to run you need fuel, air, and spark. Available as a coupe only, the SS Supercharged featured the 2. No acceleration at all when this happens. But yesterday it rained for 4 - 5 hours hard, then it sputtered under a very slight acceleration. 8" rear end has been the standard in performance since its introduction in the Mustang in 1986 and Ford Performance is the manufacturer of choice when it's time to improve. As your car rolls along, the engine takes in a mix of air and fuel that allows it to keep moving. 0 to sputter? What causes a 91 Honda accord to sputter during acceleration and between 50 and 60 mph when reaching normal temperature only. 8L Ford car (pick up, van). But you also need compression and the correct spark timing. - On SN-95 cars it is bolted to the intake manifold - On 4. The shop that worked on it (Bavarian Motor Sports in Suwannee) put in an aftermarket transmission oil filter despite assuring me TWICE that they used a real OEM BMW filter. I have had this problem with my truck ever since I got it. To advertise, contact our sales department by calling (650) 948-9000 or email [email protected] The engine makes 205 hp (153 kW) at 5600 rpm and 200 lb⋅ft (271 N⋅m) at 4,400 rpm. " Automobiles are decisive instruments by nature, traversing the Earth in, as much as possible, a straight line from Point A to Point B. All cars made in 1996 and after are equipped with an OBDII interface. In modern cars with engine management systems, it is the system itself that reduces power if it detects a problem with the engine. Pulled onto the highway, gave her some throttle, and sure enough: fuel pressure STILL dropping to about 20psi (from 50ish). And yes, you need a voltmeter to check it. Is the fuel injector bad or clogged and. that is a very common issue on the 4. Your engine could be low by just 3-4 quarts causing a hard start. No acceleration at all when this happens. It seems to run ok going down the road but when you give it the gas it sputters and hesitates badly. It most noticible at low speeds in OD, 1200-1500 rpm and especially on a hill or under light acceleration. Vacuum lines can cause this. Ford has issued a Technical Service Bulletin (TSB) for some units of the Ford F-150, Lincoln Mark LT, Ford Expedition, and Lincoln Navigator SUVs powered by 5. acceleration Sputtering and popping was the first indication of trouble with mine (see: Another one not running). I have a 2005 T&C 3. 8 L V6) and the ignition parts were pretty old and needed to be replaced. As your car rolls along, the engine takes in a mix of air and fuel that allows it to keep moving. The carb I am using is a NOS Holley 9834-1 Here is what happens: Car starts fine hot or cold. How to Diagnose Car Smells. The RPMS do not fluctuate, so I don't think, and hope its not the transmission. How To Fix Engine Hesitation During Acceleration - P0100 P0104 P0171 P0172 P0174 How To Fix Engine Hesitation During Acceleration Diagnosing poor idle/sluggish acceleration concern. Thanks for all the quick replies guys. My 2006 mustang gt is sputtering on acceleration. electrical load- such as hard acceleration from a. 10-17-05 : I have an 88 Ford Ranger that keeps sputtering or missing, It just had a tune up and a new fuel filter, plugs, points, rotor and cap, thermostat and o2 sencor, the mechanic suggested that I use an injector cleaner called sea foam, and that. 3L V6 what i would do is pull the EGR back off and spray some brake cleaner in the EGR passages and try and clean them up the best that you can i have heard that pipe cleaners work great for this and i have had people tell me that they start the engine up for a few seconds to blow out the passages. Another possible culprit is a faulty component affecting the air-fuel mixture like a bad oxygen. 3L Ranger, Mustang, B2300) (at: troubleshootmyvehicle. It takes a few s. Afterwards it ran like a champ. Our certified mobile technicians come to you 7 days a week between 7 AM and 9 PM. Available as a coupe only, the SS Supercharged featured the 2. The engine makes 205 hp (153 kW) at 5600 rpm and 200 lb⋅ft (271 N⋅m) at 4,400 rpm. 5 and then to 1. 5) Replace the power valve. 93 Notchback 5. Made it better, but not perfect. Since then, it has become worse, and now there is the additional symptom of a STRONG fuel odor. 2015 ford mustang is losing acceleration and brake lights stay on, 2016 ford mustang loosing power, causes of limp mode 2018 ecoboost mustang, ecoboost mustang intercooler install psi lose, ecoboost mustang losing power at higher boost, f150 ecoboost wrench comes on and lose turbo, mustang ecoboost engine loosing power, mustang ecoboost losing. Vacuum leak- If your Mustang has a vacuum leak, it can be very difficult for it to get the right air/fuel mixture. Damaged or worn main bearing noise is revealed by dull thuds or knocks which happen on every engine revolution. ) Hi i have a 95 mustang gt automatic. 2006 AWD Pontiac Vibe - Retired until LS swap. The engine will appear to stumble for a brief period of time and then regain its pace. by Alex from Texas on Tue Jun 07 2016 In my research for horsepower per dollar my first choice was the Mustang GT. i will check the gaps and change my chip tonight to see if that helps as well as check the timng. The fix could be something relatively cheap and simple, like a tire rotation or balance. whether its part throttle or full throttle. This condition is primarily caused by dirty air filters, but it could also result from the incorrect fitting of after-market accessories such as exhaust systems, air filter systems, or replacement carburetors of a different type or size. At a steady speed, 25mph, 50 or whatever it goes into eco mode, it seems like it is hesitating/ sputtering (hard to describe) and when you step on the gas it seem to be a slow response to get it to get going. RPM PSI 3,000 10 4,500 8 as secondary turbo comes on 4,500 + 10 recovers almost immediately 6,000 + 8 and holds to redline. 5k rpm range. When does it sputter? If it is only when you are at cruising speed, whatever that speed may be, but while you are just trying to maintain speed then it is the EGR position sensor. How to Diagnose Car Smells. Less than 49K original miles. My 2005 v6 automatic mustang stalls after about 20 minutes of driving. If you try to start an engine whose ignition timing is too advanced, the starter will try to turn the crank one way, and the combustion process will try to turn it the other way, and it will seem as if the starter hasn’t enough oomph to start it. Shifts fine. I just recently bought a Ford Taurus. Help: Rough Idle and feels like its sputtering during acceleration. If this belt is off even by 1 tooth, it may cause some pretty notable acceleration problems. Car sputters when you put foot on gas!!. Could be accel pump adjustment if it is an initial sputter versus all the way through the acceleration range. Hello all, I am wondering if someone can help. If any one of the coils is broken or has a crack on it, it will cause the engine to sputter. Always begin replacing the easiest and cheapest part first, which is the fuel filter. Is the fuel injector bad or clogged and. My engine seems to be loosing alot of power, if i accelerate past 3500rpm my engine will start to hesitate and stumble, an…. If the filter is nearly clogged up with debris, this will limit the amount of fuel getting through it. Pump blown out. Download Sputtering sounds 2,099 stock sound clips starting at $2. ” They attach it to trim names, package names and special-edition names, but it usually doesn’t mean much. I am guessing a vacuum line, but I am unsure where to start looking. Have you ever experienced car hesitation when accelerating? A car hesitates when accelerating is a symptom that shows an imperfect internal combustion in your engine. Afterwards it ran like a champ. so i have a 2005 ford mustang v6 automatic transmission with 95k on it in florida, united states of america. I am guessing a vacuum line, but I am unsure where to start looking. To further complicate matters, there are applications (usually LS1 car and Vortec Truck) where both the MAF and MAP are used to determine fuel delivery. I've been having trouble with the engine sputtering when i step on the gas. The most recently reported issues are listed below. Click to find 100+ Car Backfire of Flipboard: Hoosier Caviar, Glacial Burst, New Alamo Battle by Jaida Roberts also more Ideas like Car Backfire Desktop Wallpaers, Car Backfires When Accelerating, Car Muffler, Cars Backfire at Tract Meet, Car Backfires Will Not Start, Gun Backfires in Face, Awesome Cars On Fire, Cartoon Car, Back Fire Car Wallpaper, Fart Car, Engine Backfire, Old Car Back Fire. com FREE DELIVERY possible on eligible purchases. by Cameron Rogers, Associate Editor on February 25, 2016. To advertise, contact our sales department by calling (650) 948-9000 or email [email protected] yes that is the right track also have them check to see if your mass air flow sensor is bad. My car has a loss of engine power. i got in it this moring and it idles great but as soon as i get on it it seems to sputter or misfire all the way up throught the power. Changed both o2 sensors ( I had a check engine light) 2. The acceleration of an object depends directly upon the net force acting upon the object, and inversely upon the mass of the object. The misfire is causing the hesitation; you just need to find out what's causing the misfire. Car Talk: Mustang sputters on hills -- maybe it's not getting gas Dear Tom and Ray: I have a 1991 Mustang GT with just under 100,000 miles. It only occurs under light load, so flooring it makes it take off like a bat outta hell and it runs like a champ. 1994-1998 Ford Mustang tells the story of the best Mustang in years. Your engine could be low by just 3-4 quarts causing a hard start. With that being said can. Ford Taurus Sputters. Ford Mustang 2014 v6 premium automatic transmission. 4-liter Triton V8 engines. my ford mustang gt 2006 continue to accelerated even if my foot was on the brakes. However, on certain instances (after coming out of car wash or being left overnight in the rain), after I start the engine, the RPM is unstable and I can feel the engine trying to rev up (not sure how else to describe it). Car: 2008 Maxima SL KM: 92,000 Problem: After starting the engine on a normal day, the engine is relatively quiet and RPM is stable around 1000. 2015 Ford Mustang GT: What's New for 2016. Need help with intermittent engine sputter and loss of power My 1986 fuel-injected 5. I'd be cruising on the highway and step on it and it would cough and sputter and then clear up. Here's some information on how to tell if you have a bad fuel filter. Shifts fine. Replace the pull off. Car is a 1994 Camry with 252K+ miles 4-cylinder automatic transmission. Hey guys can't figure this one out wanted to see if anyone else has this issue. Less than 49K original miles. If you've spent the last year following our long-term test of the2015 Ford Mustang GT, you know. 1996 Mustang. A check engine light often comes on due to a dirty airflow sensor (MAS). It would be nice if Ford had a diagnostic code scannerI could plug in while driving to find the code when wrench light comes on. I too thought it was a spark plug or vaccum leak. Two week ago the engine started missing. Engine hesitation, almost by definition, usually goes back to a misfire in one or more of the cylinders. It takes a few s. Well, finally on the third trip to the dealer in 9 months for the surging/high idle problem, the dealer told me "Ford has a fix for it now. You make a good point about Chrysler; I was looking at brand/nameplate, rather than total market share. Holley® has been the undisputed leader in fuel systems for over 100 years. Depending on the amount of water that is sucked up causing the vehicle to have different responses. An iconic "Christmas tree" provides accurate countdown starts. 0 and it has developed a misfire under part throttle, especially around 2300-3k rpms. ^^^ what He said. 8 liter automatic. Sputtering Pass Bys, Bursts of Acceleration, Revs, Distant Maneuvers P51 Mustang. This problem is caused when the fuel pump can't deliver a smooth flow of fuel to the engine; periodically, your engine receives only air when it was expecting to receive fuel. that only has a bit over 5k miles.