Large Problem Anyone Help

[Titan2175]

94 GT is having some major issues. The car will turn over, start and then die, but if i give it gas it will stay lit and after about a minute it will idle. But after that the car has absolutely no power when i try to drive. It sounds like its backfiring on the 1-4 cylinder bank, and it wont rev much over 3000. I ran my codes and got that the engine coolant temp was above or below expected, replaced the water temp sensor and still the same thing. Along with that i got a code "unable to control RPM's during high RPM check"

Car is heavily modified and I have a tweecer unit. but the RPM code is there with the tweecer on or not, and the condition of the engine is the same. I drove the car 600 miles last week and i know it runs. The throttle position sensor is also new.

Anyone, any help would be awesome,

Erik

 

[The Green GT]

Heavily modified as in???

We need to know whats done to it to help you.

 

[HISSIN50]

The RPM limit code is often from the IAC not performing properly, which coincides with your cold idle issue.

I'd remove and clean the IAC.

Good luck.

 

[dartvader]

I had some similar sympthoms a while back backfire, loss of power and hard start
turned out to be the stator or PIP in the distributor
good luck............

 

[MI95Cobra]

check your o2 sensors.....

 

[Koniz]

+1 on what hissin said

 

[Titan2175]

Mods are 306 W/ 10:1 compression, trick flow cam, eldelbrock maifold, ported stock heads, aluminum flywheel, shortie headers, offroad H-pipe, flowmaster catback, smog pump deleted, 24lb injectors, 65mm throttle body, BBk cold air, running a tweecer unit.

I can check the IAC, i know that with the TPS u can check the voltage to see if it is bad, any way to do that with the IAC? If so where do u attach the multimeter and do u check volts or ohms? Is there any good way to check the PIP in the distributor?


Thank you everyone,
Erik

 

[dartvader]

hmmm, I checked the timing with a timing light ,and it was bouncing all over the place that's how I knew it had something to do with the distributor, I had new cap and rotor, new ignition module checked the coil with another one so I tought it had to be the PIP replaced it and everything is fine now.
btw this was on a low miles msd unit
good luck, let us know........

 

[Titan2175]

Well the only update i have is that it isnt the IAC, i unplugged it when it was idling and the car died, so obviously thats good. Which leaves me close to square one again.

Anything else anyone?

Erik

 

[The Green GT]

Im willing to bet that if you change your distributor it will fix the problem. My PIP went out a while back and thats pretty much what it did. Except it wouldnt start at all after it finally died.