Hey guys. I am having a serious problem with the car and I cant find my answer. It starts and revs up fine if I am in neutral, but as soon as I accelerate and get close to boost it starts stuttering. It will not boost at all. It acts exactly as if the ecu was in safe mode, but it does not have a check engine light. Also my A/F ratio goes sky high when this happens, so I am assuming that it is cutting the fuel for some reason. What would cause it to do this? There is no vacuum leak, there is no fuel leak, all of the sensors are connected. Any suggestions would be great. I am going to be away from my computer for a while but keep the suggestions coming and I will get back to you as soon as I can. Thanks. Mods are in my signature.

 

do you have a fuel pressure guage?

 

just to add, make sure your boost sensor didnt pop off, they tend to pop off.

 

I do not have a fuel pressure guage. I would like to avoid buying one if I can. Thanks purerx7 thats the first thing I thought it was and it is connected. Keep em coming guys, I'll be back on tomorrow.

 

I do not have a fuel pressure guage. I would like to avoid buying one if I can. Thanks purerx7 thats the first thing I thought it was and it is connected. Keep em coming guys, I'll be back on tomorrow.

 

Sounds like the car is in limp mode and correct me if im wrong but your CEL doesnt need to be on if you're in limp mode.

 

What were you doing prior to this problem occurring?

Dave

 

Like somebody hinted at before. You may be throwing a soft code, so the ecu might be in limp mode. This wont always throw a CEL. So you should pull the codes on th ECU if you havent already...

 

I didn't do anything that would have caused any damage. I just noticed it when I was driving to work the other day. I'm getting ready to pull the codes now. Thanks guys. Any more suggestions?

 

Check your spark plugs?

 

That and plug wires, coils, etc. Ignition problems will become more evident as cylinder pressure increases - more voltage is needed as the fuel-air mixture becomes more dense. I had a bad plug wire that only acted up under boost.

 

Sounds like what happened to me when my OMP went bad.

 

UPDATE: Pulled the ECU codes. It was throwing a bad front secondary injector code. As you know this will put the car in limp mode. I messed around with the wires that go to the front secondary injector, reset the ecu and everything was right in the world. Thanks for your suggestions. She's running like a champ again. Thanks guys.

 

I don't get any boost either this problem sounds alot like mine . My rear secondary dont get any continuity . But the front does what did you do to reset the ecu . I disconnect the neg bat cable and hold the brake for ten sec like it says in the repair manual . Is that the only way or do you do somthing diffrent ?

 

"messed around with the wires to the FS injector" does not sound like a permanent fix. good luck with it

later