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freddie
freddie Posted on Jan 25, 2015
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89 Buick LeSabre 3.8 new crank sensor new cam sensor new ignition module gets hot spits sputters backfires and wont run

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montehammons

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  • Buick Master 5,531 Answers
  • Posted on Jan 26, 2015
montehammons
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Check the fuel pressure-that is critical on fuel injection. Have you checked for trouble codes? Backfiring may be fuel related or valve timing related. Next I would do a compression test to see if that reveals any problem. A decent compression tester is about $30, and low compression in all cylinders is a timing problem or an internal mechanical problem.

Bill Boyd

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  • Buick Master 53,816 Answers
  • Posted on Jan 26, 2015
Bill Boyd
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Check the firing order for the HT leads as this indicative of crossed leads.

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Related Questions:

0helpful
1answer

When the car is cool it will crank up, but when itget hot it shut off and wont crack backup
Does it crank and wont start, or does it not even crank over when hot? If it still cranks, if the starter cranks the engine over, then check for spark when it won't start. If you have no spark, something in your ignition system may get hot and fail-something like the crank position sensor, or the ignition control module.
Here is how to check for trouble codes on your Lesabre, and the code descriptions:
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Jan 12, 2014 • 1992 Buick LeSabre
1helpful
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89 lesabre 3800 vin c bad crank sensor found replaced but still has no in injector pulse or spark?
the ignition module or distributer cap has issues-------the injector driver inside the computer cud be gitten hot etc which can cause shutdown-------get car scanned with a tech ll that runs a data stream to confirm
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Sep 12, 2011 • 1989 Buick LeSabre
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Replaced ignition control module on 1994 buick lesabre, now it will start, but runs crappy also replaced crank sensor, cam sensor, all 3 coil packs, spaek plugs, and front 3 wires
check fuel pressure are fuel rail? Should be 40-47 psi. Also check filter at rear frame rail near RR tire, pull vacuum line off fuel pressure regulator at intake mainfold. Should have vac. and be dry, no gas at fitting.
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Aug 21, 2011 • 1994 Buick LeSabre
0helpful
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94 buick lesabre 3800 engine, stalls after 10 mile drive and will not start till cools. replaced TPS, Fuel pumpand filter, cam sensor, crank sensor, and ignition control module.
next time it won't run after it heats up, spray or pour water in crank sensor and see if it will start. I have seen new crank sensors go bad.
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Jan 08, 2011 • 1994 Buick LeSabre
0helpful
1answer

Not wanting to start when its hot
Sounds like the crank sensor or ignition module. I would try the crank sensor first. It is cheaper and usually the problem.
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Jul 03, 2010 • 1988 Oldsmobile Delta 88
0helpful
1answer

Im not geting any spark.its turning but not cranking up
it the ignition module pack or the crank sensor or the cam sensor.i beleive the packs are under the ignition coils.you can take out the ignition module and run it up to autozone for a free test.

hope this helps
jm
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Sep 16, 2009 • 1992 Buick LeSabre
0helpful
1answer

93 buick lesaber car ran fine engine locked up so
have you checked firing order on plug wi92717856res? could be problem.
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May 05, 2009 • 1993 Buick LeSabre
2helpful
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Replaced fuel filter & fuel pump and screen.
not positive but in the air breather there is a mass air flow sensor and sometimes air filter particles gets stuck on the sensor.It will look like a white piece of lint,if there is be careful to remove it and try it.Usually a backfire and sputtering is the signs
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Apr 21, 2009 • 1987 Buick LeSabre
0helpful
1answer

Car misses intermittently and occassionally backfires under load.
First check the ground under the ignition module.It will sometimes work loose and cause all kinds of chaos. Next check and replace the spark plugs and spark plug wires if you have not already done so. Be sure to use quality parts and install the wires in the factory holders. If you still have a problem, try a crank sensor. I just had to replace one for the same symptom a month ago.
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Mar 22, 2009 • 1989 Buick LeSabre
0helpful
1answer

1989 Park Avenue dying after 60 miles, restart immediately then
sounds like the ignition module but it could be a fuel problem
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Jan 10, 2009 • 1989 Buick LeSabre
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When the car is cool it will crank up, but when itget hot it shut off and wont crack backup

  • 1992 Buick LeSabre

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