Question about 1990 Buick LeSabre
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Posted on Jan 02, 2017
SOURCE: 1990 buick lesabre - 3.8
no u cannot bypass the sensors 1 hot and 2 signal wires. test the sensors if u got no spark from any coil and the sensors are good replace the ignition controlle modgule... the coils are mounted on top of it
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Posted on Dec 10, 2008
the coils are one integrated block with 3 separate segments. the coil pack is mounted to the ignition module and can be unbolted from each other. one can test the coils from the underside of the coilpack with a dvom. having said that your car should still start if one paired coil fails, it would however miss on one or two cylinders. I would suggest to scan for codes, monitor live sensor data to see if you have a valid crank signal, check fuel pressure and spark voltage
Posted on Feb 13, 2009
The problem is the crankshaft sensor for sure. It is mounted behind the crankshaft pulley which is pretty difficult to get off as you need a special puller. A shop should charge about 1.5 hours for this job. It is a very common problem.
Posted on Apr 05, 2009
Check ecm for part number 1228253. If it has this number in it replace it with a 16198264. Gm had trouble with that ecm for a cutting off problem. Mine would stall driving down the road and when I would put it neutral it would start back up and not have any trouble for the rest of the day. You must set the tps with a volt meter or scan tool.
Posted on Apr 25, 2009
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