Again, another car surging when idling, with $58 749 code
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Joined: Jan 2002
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From: SE Michigan
Car: 1988 Formula
Engine: Twin Turbo .60/.63 305
Transmission: T-5 5 speed
Again, another car surging when idling, with $58 749 code
The car surges when idling, in either open or closed loop, and these are the tests ive done....
Vacuum hoses, appear to be all good, detached everything but the MAP sensor, and still problem occurs.
Detached the IAC, motor still surges, at same rpms even.
Even while sitting, I can rev the car to any given rpm, may it be 1500 rpm, 2000 rpm, and the car still surges +- 50 rpm for some reason, so it's not just at idle, would this be a vacuum leak? fueling problem?
PJ
Vacuum hoses, appear to be all good, detached everything but the MAP sensor, and still problem occurs.
Detached the IAC, motor still surges, at same rpms even.
Even while sitting, I can rev the car to any given rpm, may it be 1500 rpm, 2000 rpm, and the car still surges +- 50 rpm for some reason, so it's not just at idle, would this be a vacuum leak? fueling problem?
PJ
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