R32 Gtr Not Running Properly

[icydude]

Im hoping someone here will be able to help me out.

I was taking a jaunt down a highway pushing it hard in 4th and when i let off the gas the car beganto slow down more than it should normally. I pushed the gas pedal and it just sputtured and slowly reved down.

I pulled over on the side of the road and it then stalled. I repeatedly tried to start it but it would not hold an idle from that point on. If i floored it it would stall, if i touched the throttle a few times lightly it would rev up but missed alot.

I played around with the apexi power fc settings a bit to get it home but it barely made it and sputtered all the way back 7 km.

I got home and cleaned the MAF's out with cleaner and then putthem back in, I took a quick drive around the block and it would rev up and boost fine. I parked it for an hour then went to go back to the plans i had before it did all of this. I made it down the road about 3 km and it began doing it again. I took it back and cleaned the mafs out once more. It didnt help this time.

Now i have the car in my garage. I have checked the spark plugs and they are fine, coil packs look good on visual inspection.

Anybody know what it could be? I have been able to get it to rev and drive but it does not like hitting boost or beign under load.

[Driver]

boost leak?

[Mr R32 M-Spec]

check all of the intercooler hoses

same thing happened in the GTST, one night all ok, going hard in 4th at full boost. then bang.

no boost and no idle, no revs. check all FMIC hoses joined properply

mark

[GIGOLO]

Check for air leaks in the pipes from the AFM to the engine

[icydude]

ok i'll check for leaks, I took apart the AFM side and cleanedthat stuff up. So far no help.

I'll look on the other side of the I/C now.

[blind_elk]

Check the connections onto the AFMs. Check the connection onto the CAS.

[icydude]

What is the CAS and how do i check it?

The apexi ECU is reading the MAF voltages and they look good.

Edit: Brain fart i guess. Check the connections for both and both are fine.

Edited August 24, 2005 by icydude

[blind_elk]

OK. If you have a boost leak, then you have a boost leak - the car will run like crap permanently, it doesn't start and stop behaving erratically.

It might be the ignitor module for the coils - they tend to become susceptible to heat, and often recover after a you have stopped for a while trying to figure out what the problem could be (they manage to cool off and work OK again).

It could also be a bit of oil blowby - check the insides of the plumbing between the AFMs and the turbos. If they are coated in oil, then that is a potential source of the problem (hence the fact that cleaning the AFMs seems to at least partially fix the problem).

[icydude]

there was a fair bit of blow by in the piping buthe mafs did not have any on them now.

[icydude]

It turned out to be the AFM's ......no in search of two that are working.

let me know if you have any