1990 grand prix 3.1 car originally stumbled when transitioning from acceleration to cruise and would stutter real bad, I had to either punch through it or let off the accel. and come back on it slowly. Then while driving fast down the freeway the car lost engine power but was still running could control steering just no power. Stopped and tried to restart etc.. would start and idle rough then just die upon accel.. Came back approx. 18 hours later and she started fine and ran good, not much stutter like before drove a few times nice and easy but also got up to 55-60mph. Then today I go to get on the freeway and BAM! she goes dead again did't get much past 60 if at all, had to giver and llittle to gain speed when it happened. Now she just sits. What should I do.xx
Could be clog catalytic converter.Tune up fuel filter,coils,air filter.
Pulled codes manually came up with 33 and 35 map sensor and idle air control. Would driving near 100mph cause one of these to fail. Also I had it running good for a couple days around town after this then today trying to get on the freeway and it still wont run. Starts idles rough eventually dies, give it gas dies immediately. Just went back to check on it
Check vacuum line for cracks this could be show MAP sensor.Or replace MAP.
replaced map and idle air no luck
car idles rough, I can put it in drive and it will move only around idle speed 5mph as soon as i give it gas idle or in drive it dies. Could that be a piston not firing, how to test it. Is there a starting poit or do I check all the suspects randomly, i.e. plugs, wires, coils packs, etc.?? Any insight would be great
I tell you catalytic converter.
if I disconnect it will it run?
it seems as if the catalytic converter was removed at some point and a straight pipe was welded in its place
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SOURCE: 1997 Grand Prix GTP starts but wont run for more than 5 Sec
is this a supper cahrged grand prix if so check fuel pump resistor located behind right front head light or on fire wall its made of white ceramic has to wires going to it jump the two wire on the connection going to it if it runs longer then 15 min then replace resiustor.
SOURCE: 2002 grand prix runs rough,dies service engine
sounds like you have a vacuum leak, check all the vacuum hoses and replace any broken or kinked ones, also check around the intake manifold gasket for leaks. any air leaks after the air flow meter creates 'un-metered' air which inturn will make the car run rough and stall, hope this helps
SOURCE: I have a 97 grand prix gtp that will start but wont hold an idl
bad fuel pump.- just replace it and your good to go!
SOURCE: 1997 pontiac grand prix GTP that will die while im driving
I would start by replacing the Crank sensor and the cam sensor.
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