1995 Buick Lesabre-check engine light would come on; car would die in traffic; and car would buck or lung while in drive. a complete tune up of replacement wires and plugs were done.Crank sensor and computer was changed 2 weeks ago. This past weekend the car returned to same problems and computer was burned up. Had to be replaced today. i feel it laboring while in drive and lunges were slight again. What could have burned up the computer so soon after replacement and why would it be lunging?
Mechanic_JK
OK. When you say burned up, do you just mean it went bad, or it actually burned up?
It went bad and the mechanic said “It burned up”.
The running bad is a precursor to something shorting out the computer. Could be a rubbing wiring harness under the hood. Try moving harnesses around with car running to see if you can get it to act up.
If this happens , what do I need to do or tell the mechanic?
If you can get it to act up, show him which harness you were moving. Have seen harnesses rub behind alternator as it passes the intake manifold and goes down back of engine on this vehicle.
1994 Buick Lesabre Custom
3.8l v6. When i step on the gas from a stopped or rolling position it has no get and go and it takes its dear sweet time getting up to speed, but once its up to speed, no issues, i could step on it and get up and going plenty fast, just not from a stop.
It could be a clogged catalytic converter, or a fuel system problem like a clogged fuel filter. You may also want to check the fuel pressure regulator for leaks. And make sure you have no vacuum leaks such as at the upper intake or PVC system.
Ok, cool thank you i will give that a try, but i will be back if it don’t work. Just one more question. This problem stated after we found out that the cooling fan relay (both high and low fans) are no good and we put new ones in, would that make a difference?
That really shouldn’t have made a different in acceleration. Thank you for visiting!
My sister 1999 Buick Regal broke the belt tensioner. We replaced it and now the car won’t start no fuel but I don’t know why.
ProTech:
I have no idea why replacing the tensioner would cause your car not to start….it is either something else, and a coincidence, or you broke or disconnected something when you did the job. It is possible that when the tensioner broke and the belt flew off it may have damaged the crank position sensor. This would cause the car to have no fuel injector pulse ior spark.
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5 Comments on "Buick Lesabre Stalls Out And Check Engine Light"
I have a 1990 Lesabre with the same stall problem. it came up with the trouble code # 41 so I changed the crank shaft sensor that wasn’t it, so I changed the ignition control module and that didn’t stop the problem. I’m thinking wiring and/ or EMC next or should I take it to a shop and get them to trouble shoot it ?
other than the stalling the car runs well.
2001 Buick Lesabre. changed the thermostat 2-3 wks ago because sensors and gauges on the dash said it was overheating. seemed to work for a short period. when driving at higher speeds a/c works fine. when you drive at slower speeds the temp gauge shoots up to overheat mode and a/c quits blowing cold air. turn off a/c and the temperature gauge immediately drops back down to normal readings. ???
Check to make sure the radiator fans are coming on. Check for a restricted radiator- externally and internally. The A/C adds heat to the engine, so it the fans are not coming on or the radiator is plugged, there will not be enough air flow at lower speeds to keep the engine cool.
1999 regal lse putters when given gas,rpm gauge bounces when in park and idoling changed oil alternator map sensor and tps
Sounds like an engine misfire. Have codes scanned. Bad spark plug wires are common to fail for this problem.