Question about 2002 Ford Mustang

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Hesitation at around 45 to 55 miles per hour

My 2002 mustang hesitates at about 45-55 miles per hour, we changed the mass air flow senser no change we changed the mass air flow no change, took in to a shop had it looked at he said fuel in the fuel line, put in some fuel additive and change the plugs. im at whits end

signed car not running right.

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5 Answers

I am having hesitation when start of acceleration. Already changed plugs, fuel filter


I had the same problem. New plugs, wires, fuel filter, air filter, MASS airflow sensor cleaned and still it would hesitate. It seemed to get worse when warm. Sunday I fixed the problem. Take the distributor cap and rotor off. Under the rotor there is a metal plate held on by two screws. Take the plate off, this will expose the optical Cam sensor. I took a can of MASS airflow cleaner (Plastic safe)(can buy at advanced auto parts) and sprayed heavily. Once it was dry I put it all back together and it runs like new.

Feb 10, 2010 | 1995 Mercury Villager

1 Answer

2002 mercury sable 3.0ldohc


do a compression test on all cylinders they should all be within 10 psi of each other if not need head work done good luck

Jul 07, 2009 | 2002 Mercury Sable

1 Answer

Car hesitates at different rpms in all gears on my 2004 mazda 6


Hi, it might very well be the electronic engine control system that is malfunctioning, among other probable causes. I'm not there in person, but I can help you go through the most probable causes of this accleration-hesitation problem that you have. In fact, here's a very good, handy diagnostic article exactly on your issue, detailing the six most probable causes:
http://yourhandymanzone.com/Your_Handyman_Zone_How_To_Pages_Vehicle_Car_Zone_Cars_Trucks_Vans_Engine_System_Engine_Hesitates_When_Accelerating.htm
Go through these to definitely solve your problem.
Brad

Jun 01, 2009 | 2004 Mazda 3

1 Answer

95 volvo 940 jetronic error codes 113 212 232


Change the the O2 senor on the catalytic convert. Its probably dead.

Jan 15, 2009 | 1995 Volvo 940

1 Answer

Engine code on a neon


it sounds like you have a fuel issue. you should check for proper fuel pressure. its should be 48 PSI.

if its not, it could be a clogged fuel filter, a malfunctioning fuel pressure regulator, clogged fuel pump strainer, or even a bent, kinked fuel line.

if the fuel pressure is correct, its most likely a faulty fuel injector.

by the way, you car doesn't have a mass airflow sensor, it has a MAP sensor

Oct 22, 2008 | 1996 Plymouth Neon

2 Answers

1995 Buick LeSabre hesitating.


try change the fuel filter.
and sure there is no abstraction in the air flow from the air filer to the air mixture intake.

Oct 15, 2008 | 1995 Buick LeSabre

1 Answer

CAR LOOSING POWER. CHECK ENGINE LIGHT ON. ONLY CODE IS CYLINDER 2 MISFIRE. JUST HAD A COMPLETE TUNE UP. TRIED NEW MASS AIRFLOW. THINKING IT MUST BE THE ECU COMPUTER. THERE IS A MAJOR HESITATION IN...


I have a 1999 Protege 1.6L with 93,000 miles. And a
1996 1.5L with 170,000 miles.
When my light came on, I got the EGR code read out at Advance Auto ($0). I googled 'Mazda EGR' and found this is frequently due to carbon buildup in the throttle body. It seems the carbon restricts the flow from the EGR, which then calls for a more open valve, and the error code is "excessive flow". Go figure.

Very easy to disassemble throttle body (just check to see where the EGR line is attached to the intake air path, just prior to injector assembly). Sure enough, a clump of carbon around the EGR port in the throttle body. Cleaned it up with a paper clip, Q-tip, and carburetor cleaner. Total cost < $3.
Cleared to code. No light on now, car runs fine.
If your "EGR VALVE" is bad,
you can get one cheap at the url below, and they take Pay-Pal.
Then you can install it of have it installed.
http://www.autoparts123.com/?gclid=CJual4Dv65gCFQS7sgodxk592A

Sometimes...
A less expensive fix is to replace the engine Coolant/Antifreeze "Temp Senser"
This will cut fuel to the injectors if not working properly.
Also replace the engine coolant "Thermostat",
when changing "Temp Senser".
You can pick up both at Auto-Zone for about $35.00.
This fixed our 1996 model. The 1999 model was fixed by replacing the
EGR Valve.

Hope this helps.
"Catch me on the flip"
"Mo"

Jul 22, 2008 | Mazda Protege Cars & Trucks

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