My 2004 pontiac 3800 series will start up fine when cold but when it gets up to temperature it shuts off.go out in the morning it starts up again until it warms up and the same thing happens.the only code i got was a p0172. bank 1 to rich. will this shut it off.
And I told you yesterday that it was likely the ICM because GM 3800 motors have that as a common fault. They get hot and go bad. Doesn't help that on most of them mount directly above the water pump with no real heatsink. If your computer stops sending a spark signal to a cylinder (which is what the ICM does), you'll still get a fuel spray but it won't get burned. That's why it's running rich.
Take it to a qualified repair shop ! Told you yesterday a rich code would not cause your problem . I also told you it could be ICM - ignition control module , or maybe a crankshaft position sensor . I have over thrity years GM experience , Chevy , Cadillac , Pontiac , Oldsmobile . Buick etc..... So you should let a professional fix it .
156 views
Usually answered in minutes!
×