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#1
03-29-2005, 10:58 AM
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'91 champ to chump!
I own a 91 caprice with an original 305 , with only 44,000 miles. For the past 5 months i have been experiancing a problem that i have never before encountered in an automobile, when i first start the engine "COLD" there wiLL be a very slight pop out the exhaust like a small backfire, and then the engine runs fine for about 10 minutes. once the engine is warm aLL i hear is "POP-POP-POPITY-POP" the car jerks and stutters aLL the time and barely wants to run at this point, if i stop at a red light and goose the throttle the engine dies, but restarts "KNOCK ON WOOD" fine and then it goes back to POPITY POP. untiL i park it for about 6 hours. this car used to run like a champ now its just a chump. does anyone out there have any clue as to what is wrong? guesses= catalytic converter,,,,or oxygen sensor,,,,,, bad gas?
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#2
03-29-2005, 07:50 PM
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Re: '91 champ to chump!
I'd start with the simple things first. Check your spark plug wires, cap and rotor for any abnormalities.
__________________
CD 1991 W41 #142 1989 Caprice 9C1 1997 C1500 1997 Bonnie SE 1998 Olds 98 LS Recently updated: http://forums.b-body.org
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#3
03-29-2005, 11:24 PM
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Re: '91 champ to chump!
Try unplugging the vacuum line for the EGR. Plug the line with a golf tee. Go for a drive. If symptoms stop, I'd say that's your problem. With the Egr unplugged though, you may get some spark knock when the engine is hot.
Is the car throwing any codes?
__________________
 1977 GMC Jimmy - daily driver-sitting on 33's and bedliner inside and out 1995 9C1 Caprice - winter beater 1994 Impala SS - newest project 1991 9C1 Caprice - (rip) "There are two great problems in the world today; an ever-growing lack of common sense, and too many warning labels. Take away all of the warning labels and the problem will work itself out..." -B
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