I am having a surging engine issue. The car has only 38,000 original miles. Always garage kept. The surging was mild, but now it is getting worse. I would like some expert advice of where to start. I was thinking to start with a carburetor kit, and if that doesn't fix it a new computer may. I would appreciate any help. Thank you.
1988 Chrysler 5th all original Surging Help Please
- Thread starter Master M
- Start date
Mikes5thAve
Well-Known Member
If you suspect the computer there's a test in the service manual to confirm it'd operating properly. Do the one from the proper year service manual because the values aren't always the same.
It's rarely the computer, usually something else.
It's rarely the computer, usually something else.
LSM360
Well-Known Member
I agree that check for vacuum leaks and other easy checks before replacing computer. Has it sat for long periods? With that low mileage, I'd wonder about bad fuel also. BUT my money is with a failing computer. That '89 FSM posted for you is good advice. Good luck.
dodgeman316
Active Member
Definitely agree on checking the hoses for a vacuum leak. I had a lean surge on my 69 Coronet and I had to richen up the carb to fix it.
Hayzoos
Well-Known Member
Another possible issue related to gas from sitting is carb issues. Ethanol free gas just gummed up and left varnish and if long enough powder. Ethanol gas cleans the protective oxide from many metals setting up a cycle of oxidation <-> cleaning which eventually affects metering in a carb. Also soft parts like seals, diaphragms, etc. from before ethanol fuel tend to soften and/or swell causing problems. If you need to get a rebuild kit, make sure it is ethanol compatible.
