97 Bonnie Dies while driving
try2fixer
03-24-2009, 05:23 PM
I have a 97 bonneville 3800 with 130000 miles. The car starts right up every time, idles and runs perfect for about 5 minutes. After that it will die while driving if i let off the gas to stop at a light. I can put it into neutral and it will start right back up every time. If i just start it up and let it heat up in park, after about 7 or 8 minutes the RPM's dip down and the cpu comensates by revving the enging up to about 1500 and it repeats that cycle a few times and finally dies. The car also won't rev up past 4500 RPM's. Auto zone diagnostic came back misfire due to low fuel. I changed the fuel filter, no help. Would the TPS cause it to die at idle? I don't think the feul pump would cause this because it runs good for a while. Going to test injectors tonight. EGR valve? Anyone have any other ideas? Thanks for the help!
maxwedge
03-26-2009, 06:39 PM
Welcome to AF. Check fuel pressure first, need about 47 psi. If ok, check for a sticking egr, carboned up throttle body or iac, and it will not rev in neutral above 4500, if that is what you are doing.
try2fixer
03-27-2009, 12:45 PM
thanks! I'll try checking the pressure as soon as i get a chance
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