vacuum leak
daddylittle
10-13-2009, 07:07 AM
I have a vacuum leak on a 2000 deville, replaced all o2 sensors and map sensor and maf sensor, still have problem. code is 0171 can anyone help?
maxwedge
10-13-2009, 01:25 PM
Welcome to AF, what makes you think the code is caused by a vacuum leak, it says lean exhaust, other things can cause this. Low fuel pressure, dirty injectors ,air entering behind the maf are some possibilities.
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