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27 Posts
Discussion Starter · #1 ·
Got a problem with a 92 Jetta GL that's driving me nuts..
Under load, have zero power and black smoke over 3k rpm.
Have replaced:
Pressure regulator
Coolant Sensor (Mr. Blue)
Vacuum lines
ECU with matching p/n
Plugs are coming up 'wet' and its clearly dumping fuel. Idles decently with the variation in idle that indicates the O2 sensor is going through its duty cycle. Timing set to spec. At 1/2 throttle it will run all the way to redline under normal driving, but go further and it just plain won't pull. Back out of the throttle and its fine.
If this were a CIS car, we'd be looking at the mixture adjustment, but I'm really at my wits end on this one.... Any suggestions????
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