Quote:
Originally Posted by darcane
The original poster specifically mentioned his car has a MAP sensor, so it most likely has no MAF or VAF (Vane Air Flow - aka "flappy thing") sensor to meter air before the throttle body.
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Having a MAP sensor does not automatically exclude any other sensor! Can you show me any engine that has a mass airflow sensor but does NOT have a MAP sensor? You are probably right though on the OP's car,considering it's age it probably fully relies on the MAP sensor. Which can also have a condition where a vacuum leak creates a RICH condition (instead of lean!) if the MAP sensor is remotely located from the intake plenum,connected with a vacuum line that has cracked or broken. There will be low vacuum reading to the ECU "telling" it to dump fuel because this guy has the throttle nailed! (despite being equipped with a TPS ) I have seen this personally.
BTW thanks for the name Vane Air Flow! So that's what it's called!
Barna