So my car has some problems and I would appreciate if you could help me out. 90 Buick century 200000miles v6 3.3. My car hesitates to take off (sluggish) sometimes I have to push the petal in and out to get going most time I only able to barly push on the gas bout half an inch to an inch and its really slow to take off. After I get to about 35 it acts alittle better but still can't push down on the gas with out it slurging (might be the right word) after 45 it runs alittle better. But after 55 it runs great just like it should. Also it I'm driving for half an hour and say go to 3 diffrent gas station and shut my car off at all three, my car dies when taking off from the 3rd gas station and I have to wait 30-60 mins for it to cool down before it will start again. Also if I start my car first thing in morning (cold start) it will instantly die if I don't rev it up for bout 5secs.
Ac randomly stop kicking on. But with Ac fan or heater running I think my car runs a bit better. Not quite sure could be my imagination. Noticed that when driving awhile my car wont reach full 190 operating temp(witch it uses to.) Codes have 26 and 27 Quad-Driver (QDM) Circuit. Think because I have the toque clutch converter unpluged because it was haveing problems dieing when I stopped after going 55mph(shutting stop kinda like stopping in a manual and no pushing the clutch)
What has been replaced. Iac, maf, spark plugs and wires, ECM, o2 sensor. The iac when replace I heard if you plug it in and turn the key on or try to start it you could see the pendle moving in and out. I did that but the pendle did not move so I'm thinking about testing the wires but I don't know what wires go to what there's 4 coming off the iac. Thank you for any help.
Monday, August 27th, 2012 AT 4:50 PM