ok so my 99 gtp keeps throwing the code p0172 which is fuel trim system rich bank 1. and i do not know what is making it run rich. can anyone help me please
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12-13-2009
ok so my 99 gtp keeps throwing the code p0172 which is fuel trim system rich bank 1. and i do not know what is making it run rich. can anyone help me please
12-13-2009
dont know if this link will work for ya but it has the diag and breakdown of what causes that code
http://sm.gpona.com:9001/servlets/Bl...sdid=78&evc=sm
12-14-2009
Could be a bad maf or a vac leak. Both those are what caused mine.
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