2000 VW Golf 2.0 misfires 30 seconds after start
10

Asked by MK808 Jun 11, 2018 at 08:24 PM about the 2000 Volkswagen Passat GLS

Question type: Maintenance & Repair

My car is a 2000 VW Golf GLS, 2.0, automatic.  My problem is this: Car starts right up always, idles and revs normal, after 30 seconds runs rough and bogs when revved.  Does not go back to normal until you turn key off and restart, at which point it repeats the misfiring after 30 seconds.  I say misfire because that's what the codes said.  The 3 codes pulled where cyilinder #1 misfire, Cylinder #3 misfire, and multiple misfires read.  I replaced upstream O2 sensor and Crank pos sensor and no change.  Coolant temp sensor recently changed but don't see why that would be an issue since car does it when hot or cold.  fresh plugs.  i'm thinking low fuel pressure, coils, or MAF??  Any thoughts appreciated.  Why does car "reset" itself each time key is turned back on or off?

1 Answer
10

MK808 answered 6 years ago

Figured it out myself. Turns out was the MAF. I guess MAF is disabled for the first 30 seconds when you start car. After that it kicks in. Mine was dirty, so therefore the misfires. easy fix.

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