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Car has a ghost

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jaredo

Probationary Member
22
0
Feb 26, 2005
Fort Myers, Florida
Ok , I am stumped, and pissed and a bunch of other @#%@. Currently the car is only a weekend car, actually more of a monthly/semi-monthly car. But anyways its been acting really wierd lately.

Last night, started it drove around the block everything was fine. After about 5 minutes the ghost kicked in, my rpms would constantly pulse (like 1500rpm-2000rpm-1500rpm then it would hold at 2000 rpm). Even if I was just cruisin in first gear, it was like the car was driving it self. Then after a bit it switch, and would hardly idle, and eventually stahl. Like jump from 300rpm-500-300-500 putt putt stahl. Wathing the a/f ratio gauge was showing rich constantly (unless i was actually driving at high rpms), and the afc throttle position was all over.

TPS sensor? Also could it be a bad airflow sensor? Car is just running horrible, especially at low rpm. When crusing at 4000 rpm, the car would occasionally jerk, like drop 100 rpm then catch up. I just put in a egt, I guess I can take it out now and tune it a little better. The AFC band is around -4 at idle and low rpm, then gradually creeps up to -16. 550's

Any ideas for me to play with? If you need more info ask me, thanks.

Oh, its been running fine previously with the everything how it is, it just wasnt until recent that all of this started happening. Oh, bad plug maybe? Also I have a 1g fuel rail/regulator. No CEL's
 
I thought about that, I have not done the actual boost leak test but I hold steady at 18psi with no problems/surges. hmm Ill do the test today and report
 
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