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I've been seeing symptoms of this for a few months, but it's never been more than a minor annoyance. There has been a definite progression to it, in frequency and severity. It began with a rare rough idle only after starting, that wouldn't go away by sitting neutral and revving the throttle, but never affected driving and disappeared quickly. A new symptom cropped up the day before the MAF conversion, where it would take a few extra cranks to start (about the same as you'd expect after relieving fuel pressure to change the fuel filter), but would then run fine.
Now, it seems to start fine, but w/o touching the gas it idles rough and slowly dies. If I start and ease on the gas it will rev very smoothly up near 3000rpm and just die. No fits about dying, but just revs back down like completely fuel starved w/o a hint of further combustion. The harder I get on the gas, the quicker it dies. If I ease on the gas, it's a very consistent 2 seconds until it dies. There's never a trace of gasoline smell, so I don't believe it's flooding...plus it doesn't hesitate to start at all
I've pulled a plug wire and verified I'm getting spark throughout the whole process, and after combustion stops while revving down.
I've scoured for vacuum/intake leaks and found none. The O2 and fuel filter are 2 months old. I'm getting codes 21, 23, and 32...but I think those may be related to the MAF and this problem did exist before the MAF. The only code I remember pre-MAF was 21, the intake air temp.
The current phase began last night just after driving. The car was still warm and had only sat for maybe 20 minutes before I tried to start it again. I expected it to go like it's done before, and I'll drive out if it...but no such luck. I expected it to start this morning, as it's never given me problems when cold, but the only difference is that since it's cold, it tries to idle high, and we eliminate the rough idle before dying. It just revs itself up to 2krpm, and 2 seconds later dies cleanly.
I pulled the TPS connector, with no change. I've pulled the O2 connector with no change.
I'm running out of ideas so I need some from better minds than my own.....help!
Now, it seems to start fine, but w/o touching the gas it idles rough and slowly dies. If I start and ease on the gas it will rev very smoothly up near 3000rpm and just die. No fits about dying, but just revs back down like completely fuel starved w/o a hint of further combustion. The harder I get on the gas, the quicker it dies. If I ease on the gas, it's a very consistent 2 seconds until it dies. There's never a trace of gasoline smell, so I don't believe it's flooding...plus it doesn't hesitate to start at all
I've pulled a plug wire and verified I'm getting spark throughout the whole process, and after combustion stops while revving down.
I've scoured for vacuum/intake leaks and found none. The O2 and fuel filter are 2 months old. I'm getting codes 21, 23, and 32...but I think those may be related to the MAF and this problem did exist before the MAF. The only code I remember pre-MAF was 21, the intake air temp.
The current phase began last night just after driving. The car was still warm and had only sat for maybe 20 minutes before I tried to start it again. I expected it to go like it's done before, and I'll drive out if it...but no such luck. I expected it to start this morning, as it's never given me problems when cold, but the only difference is that since it's cold, it tries to idle high, and we eliminate the rough idle before dying. It just revs itself up to 2krpm, and 2 seconds later dies cleanly.
I pulled the TPS connector, with no change. I've pulled the O2 connector with no change.
I'm running out of ideas so I need some from better minds than my own.....help!