Engine Mechanical problem
2001 Pontiac Grand Prix 6 cyl Two Wheel Drive Automatic 129000 miles
it takes a sec to start and then idles high when it is cold. When it gets up to temp it wont idle right it will bounce from 700 rpm to 1300 rpm and will die after it dose that about 3 or 4 times. I also noticed that when driving it if I let off the gas peddle fast it will die but if I let off slow it will idle at a stop light?
When I checked the codes out it came back with a PO 172 Bank 1 to rich Could it be the egr valve, Fuel presure Reg?
I asked this yesterday and thsi is what they told me Take the throttle-body off and clean it. Check the iac--tps--cts. I wouldn't replace anything, unless I was pointed in that direction.
what is the IAC and the TPS and the CTS?
Tuesday, December 15th, 2009 AT 9:02 AM