1990 Buick LeSabre Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 1990 Buick LeSabre

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1990 Buick LeSabre Problems

Engine Stalling Due to Mass Air Flow/Crankshaft Position Sensor Failure

The mass air flow or crankshaft position sensor may fail causing the engine to stall intermittently. Proper diagnoses will be necessary to determine the cause of any stalling condition.

Power windows may fail

I have 3 windows that will not go up or down although the drivers side works fine

Wear In Outer Tie Rod Ends Can Cause Steering Problems

The outer tie rod ends on the steering linkage may wear causing excessive free play in the steering and uneven tire wear. If the worn tie rod ends are replaced, the wheel alignment should be checked and adjusted as necessary.

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1990 Buick LeSabre Questions

location of gas filter (2 answers)

no spark (2 answers)

changed cam and crank sensor and igniter under coil pack. still no spark

Will start but won't run in idle once u take ur foot off the gas it dies (2 answers)

It started yesterday I was sitting in idle and it died since then havnt got it to run more than 5 mins and can't even do that without constantly giving it gas I've check fuel filter fuel pump and relays I've heard mybe check the crankshaft sensor need to check fuel regulator anymore i...

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1990 Buick LeSabre Reviews

I bought a used 1990 LeSebre in 1997. It was a GREAT car!!! I sold it at about 180,000 miles and at 180,000 miles it ran better & smoother than my 2005 LeSabre brand new! The ONLY problem I had with the car besides normal maintenance was a rocker broke loose in the engine resulting in only 5 cylinders working. I could still drive it but it naturally was a "bumpy" ride lol. I took it to our mech...
when i start the car it runs for 30-45mins then stalls. after about 30-60 mins later it will start back up a run. i have changed all kind of parts out and now it will start then stall. i have put code reader on it b4 i changed parts and it still reads code 41. PLEASE HELP ME IM SPENDING MONEY
My Buick Lesabre is actually a 1989 and at present has 413,000 miles on it. Always had regular oil changes and transmission fluid changes. It was an outstanding car,great on highway road trips. Still has original transmission but has problems now,cannot complain with that mileage. Engine still strong and smooth,now car is used for short trips around town,no longer reliable for extended trips. I...

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