golf mk4 gti 2.0 poor idle high emissions

**sparkyjohn2005** · 06-10-2008,10:47 PM

help! my golf gti 2.0 is running really rough idleing and is putting out high emissions also guzzling fuel took out the spark plugs which were just replaced and were pretty sooty changed the coolant temp sensor but made no differance can anyone tell me whats wrong?

**Crasher** · 06-10-2008,11:04 PM

A fault code read may indicate a faulty lambda sensor (very common on this engine) but the problem can be caused by a faulty Air Mass Meter (or MAF as some call it) DO NOT DISCONNECT the AMM to test it, that will just store a fault code and not help you. Get a code read done and come back with the results.

**sparkyjohn2005** · 06-10-2008,11:13 PM

ok thanks mate shall i book it in at vw garage or will any auto diagnostics place do?

**Crasher** · 07-10-2008,01:34 PM

Anyone who can read and clear codes. Get a print out.

**angelo4913** · 13-01-2009,12:50 AM

Hi all, i have the same problem as listed above and was wondering if anyone had solved it? any suggestions? i have serviced the car, replaced air flow mass sensor, changed HT leads... bit stuck now as diagnostic does not say what the problem is specifically. just reads: misfire, high emissions etc..

Thanks
Angelo