1996 Buick Le Sabre Won't Start

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  #1  
Old 10-11-08, 10:39 AM
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1996 Buick Le Sabre Won't Start

Daughter's 96 Buick (3.8 V6) everything ok and suddenly engine light came on and car immediately started running very poorly. Turned engine off, and tried to restart, cranks but won't start.

Fuel pressure check OK. Ignition Control Module checked good at Autozone.

Engine sounds out of time and when it tries to fire it seems to be partial backfire.

Thoughts on jumped time? or Crankshaft Positiioning Sensor?

Anything?
Thanks.
 
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  #2  
Old 10-11-08, 05:11 PM
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Location: Eastern Georgia
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how many miles are on the car? My guess is if mileage is low crank position sensor is going or gone. Does the 96 still have a seperate crank and cam sensors or are they together, if they are seperate i would look at the cam sensor as well.
 
  #3  
Old 10-12-08, 06:19 PM
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If the check engine light came on The first thing i would do is get a trouble code out of your pcm. Most part stores like auto zone will do this for free,if you can;t get the car there small code readers can be purchased for cheap. This will be a easy way to get in the right direction.

Other things to look for. Check for spark this will be a good way to see if you have a cam/crank error. Also pull out plugs and check for antifreeze, this engines are known for leaking upper intakes were they suck in coolant by an egr passage.
 
  #4  
Old 10-14-08, 07:41 AM
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Gem tec you hit it. Intake manifold (Plenum) sucked in antifreeze and hydrolocked the engine. Thanks for your help.
 
  #5  
Old 10-14-08, 08:03 PM
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they sell aftermarket kits that replace the egr tube ( the little silver tube sticking up when you take the manifold off) with a smaller version so this doesn;t burn out the plastic so fast. This is most likey why there is coolant in the cylinders. So don't just replace the gasket make sure the upper plenum gets replaced.
 
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