Code-34 MAF Diagnosis

BASS

Member
Joined
May 25, 2001
Ok, today I started the car and got a Code 34 (check engine light on along with checking Scanmaster). The idle quality is a little crappy (idling high), and when I put the car in Drive, the engine bucks & stalls badly. I disconnected the MAF, restarted the car, and it seems to make no difference with the MAF disconnected (the car still bucks/stalls when I put it in Drive).

At idle, the MAF, IAC, TPS, etc numbers are normal.

I'm running a stock (non-rebuilt) GM MAF (which I replaced a few years back). The wiring leading to the MAF connector (and also the connector itself) looks perfect.

Before I swap out the MAF, I read that there is a wire associated with the wiring harness of the MAF (located near the coil pack) that might have a loose connection/ground? Exactly where is this wire? I couldn't seem to find it...
 
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