[Mr Ron B]

What's up guys having problems at wot the car sputters and slowly accelerate i have change the plugs, filter ,Iac and clean the maf. I have 4.10 in the car it's a auto 01 gt Mac H-pip steeda pulleys,D-sport Chip,Mac cai,Accufab 70tb and Plenum. The check eng light does not come on and i had a system dio test done everthings check out ok. It does this off and on when i get in the car its fine driving a couple of miles then it starts. Can not punch it on the highway at wot at all. HELP WOULD LIKE TO ENJOY MY CAR AGAIN THANKS .

[tripleblack]

Sorry for the bad news. Check out the "02 GT only has trouble when..." thread a few lines down from this one. Might shed some light on your car's problem - lots of folks with AOD's talking about similar stuff.

tripleblack

[Mr Ron B]

Thanks Triple Black i check the 02 gt thread but my problem is when i'm driving the car it's start fine

[sebastian]

thats basically what my car was doing, i fixed it yesterday, my problem wasnt intermintent though, it happened all the time, when ever i had a load on the motor it would sputter... 98 mustang gt. anyway i changed the plugs, gaped them at .050, replaced the fuel filter and pcv. if you have done this already i would go next to fuel pump, coil packs or wires. does it backfire? mine did if you bogged it down, so i new it had to be some where in ingnition, not necessarily fuel...

[tripleblack]

Originally Posted by Mr Ron B

Thanks Triple Black i check the 02 gt thread but my problem is when i'm driving the car it's start fine

Ok, but what I meant was to take note of the many auto tranny owners with driveability issues. Their problems are often intermittent and hard to trace (so far). It was just coincidence that one person mentioned a problem and many others chimed in, and it turned out they all had similar cars with same transmission.

The AOD's do more than change gears - they are an integral part of the electronic control system of these cars. The steps you've already taken tend to make me think the problem is not directly in the chain of examination for the engine, but might instead be a part of a problem with the communication which takes place between the AOD and the OBD computer. The guys whose cars won't start are not getting error codes either....

Hope the car fixes itself, of course. But I'd have the dealer take a gander at the transmission in the mean time...

tripleblack

[Mr Ron B]

Ok i take note of that also sebastian posted the some problem he just fix his he change the plugs filter and pcv i did everything but the pcv do you know were it is located

[tripleblack]

PCV (stands for Postive Crankcase Ventilation) valve can go bad, and when it does you get an Error Code and the check engine light comes on. If you haven't seen the CE light, then you probably don't need a new valve, but...

I can point it out to you, but damned if I know how to be sure you address the problem without a picture... Buy a workshop manual and look in the fuel section - they have a good illustration. The best way to test one in the field is with a new one that you figure is good - swap it out and see if it helps the problem.

tripleblack

[sebastian]

any more news my car keeps missing, it does it when you have a good load on it, as i give it gas slowy all the way to full throttle it works fine. jump on it at low rpm and it sputters and bucks, it worked fine for about a month when ford said it had a fouled plug, they wanted to do a fuel system clean and new wires, i told them no, and when i got the car back, it ran perfect. they must have cleaned that fouled plug, and eventually it fouled again leads me to believe ignition not being hot enough.... maybe coil packs going bad?

[BlueStreak03]

I would look into new coil packs for sure. Especially if those are the originals still on the car. Also I would check the wires and pay close attention to how they come off. If they don't require a healthy tug to release them from the plug, there might be a problem. Check the plugs for broken electrodes and cracked ceramic in the shoulder area where a ground may develop to the head also.

[c&mracing]

I would check for vac leaks under load see if your putting pressure on the intake on excel. Somthing not torqued or gasket failed on intake side. Have you tried taking out the chip to see if the program is confliting with ECM???? hope this will help Vac leaks cause alsorts of running problems main one i thinking of improper fuel mix on hard excell also check fuel pressure on excell see if your dropping pressure

[c&mracing]

would check for vac leaks under load see if your putting pressure on the intake on excel. Somthing not torqued or gasket failed on intake side. Have you tried taking out the chip to see if the program is confliting with ECM???? hope this will help Vac leaks cause alsorts of running problems main one i thinking of improper fuel mix on hard excell also check fuel pressure on excell see if your dropping pressure