1987 Buick Lesabre stalls and then is hard to start.

Tiny
SHAYNTM
  • MEMBER
  • 1987 BUICK LESABRE
I have a 1987 Buick Lesabre that has been stalling and has been hard to start afterwards. If you go somewhere and shut the car off it has been hard to get the car started again. I have changed the fuel filter and replaced the fuel pump. I got a remanufactured ignition module from a wrecking yard, and I realize that there is no guarantee that the one I got was a good one. It does not seem wise to continually throw money at a parts house trying to get lucky as if trying to win the lottery. I went to the Library and looked at Michell's online automotive repair manual, but it is a lot of reading just to isolate what are the causes of a 1987 Buick Lesabre stalling and then being hard to start.
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Friday, August 10th, 2007 AT 12:36 AM

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Tiny
ADVANTAGE1
  • MEMBER
I have had a similar problem with my 1994 Buick LeSabre. So far I have diagnosed that it might possibly be the Emissions Control System. Check your charcoal canister. It is located under the hood in the very front, driver side corner. It is a large black cylinder that sits down into a hole. Make sure the fuel line is connected into the fuel port and the smaller vaccuum line is connected into the other port. On my 94 I have three ports and I am unsure of what port to use for the vaccumm line because one says purge and the other says air. I believe its just the purge port and the air port is left open. I found my lines unconnected. But other systems for the emissions might be causing the problem. For example I saw another post on here with someone and similar symptoms to you and myself and they solved the problem with a new camshaft sensor or crankshaft sensor. Try a new Mass Air Flow sensor as well.
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Tuesday, October 30th, 2007 AT 6:26 PM
Tiny
HIDDENFALLS
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The hard to start and possibly stalling problem could be the cause of a bad "Crankshaft Position Sensor"

They are around 20 dollars if I remember right; I had one of these replaced on my 87 lesabre which had similar problems.

The sensor is located by the harmonic balancer so you would need to take the right front wheel off to get to it.
There will be two sets of wires (around there) one is the camshaft(upper one), other is the crankshaft (should be the easier one to get to)
Also you may need to remove the engine belt to get to the bolts.
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Friday, November 16th, 2007 AT 1:21 PM

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