Engine Idle and Stalling Problem

[yesitdoeshaveteeth]

As crazy as this sounds, I had a very similar problem with intermittent idle and after replacing the IACV and TPS and after having ordered the intake gaskets, I decided to give one last shot at trying to find the obvious before I tore into my intake.......which lead me to find that the culprit was actually the vacuum hose that comes off the Fuel Pressure Regulator. That little $.25 hose was the reason my VX would idle all over the place. When I discovered it, it was chaffed and cracked at both ends, all I did was lop off about a 1/4 inch off both sides and reconnected it to the FPR and the upper intake plenum, its been running fine ever since - Hope that helps!

[ALC1717]

Thanks for Everyone that tried to help with the problem. It was the Idle Air Control Valve. Problem FIXED !

[Bulldoggie]

As crazy as this sounds, I had a very similar problem with intermittent idle and after replacing the IACV and TPS and after having ordered the intake gaskets, I decided to give one last shot at trying to find the obvious before I tore into my intake.......which lead me to find that the culprit was actually the vacuum hose that comes off the Fuel Pressure Regulator. That little $.25 hose was the reason my VX would idle all over the place. When I discovered it, it was chaffed and cracked at both ends, all I did was lop off about a 1/4 inch off both sides and reconnected it to the FPR and the upper intake plenum, its been running fine ever since - Hope that helps!

I didn't like the look of the vacuum hose attached to the fuel pressure regulator, when I changed it (the FPR) That's why I thought Vacuum leaks might be to blame. I would have cut some off the end but there didn't seem enough to stretch. I had a Mechanic friend tell me about a Smoke test, for checking for vacuum leaks. I think I'll pass on the test and start replacing hoses.
I'm glad that you did get good results. That will be my next step for sure!
Can't wait for the rain to stop so I can "Get'r done"

[Bulldoggie]

I was in Autozone and I asked for pricing on the MAF and IAC.
He said $100. for the MAF and $50. for the IAC?????
Last time I priced the MAF I was told $475.??????? WTF!
Anyway I pulled the trigger and 10min. later my VX runs like new
AWESOME!

I'm not sure which one, but I don't care!
I'm so happy that it's using all 3.5L again...
(I'm guessing it was the MAF all along)

[Ldub]

AWESOME!

I'm not sure which one, but I don't care!
I'm so happy that it's using all 3.5L again...
(I'm guessing it was the MAF all along)

......