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1999 Buick Park Avenue Crankshaft position sensor

Tiny
GGORM
  • MEMBER
  • 1999 BUICK PARK AVENUE
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 209,000 MILES
I replaced the crankshaft position sensor and the car ran fine. Now it is back to doing what it was doing. Starts up fine runs then shuts off. I took the car on a 400 mile trip and the car ran good.
Tuesday, November 10th, 2009 AT 9:46 AM

7 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,645 POSTS
Has the check engine light come on again?
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Wednesday, November 25th, 2009 AT 9:32 AM
Tiny
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No the check engine light has not come on again.
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Wednesday, November 25th, 2009 AT 9:56 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
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If the light hasn't come on that makes it tough. It could be that you have a crank sensor that is going bad again, an ignition module. Has the fuel pump pressure been checked?
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Wednesday, November 25th, 2009 AT 11:33 AM
Tiny
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We replaced the fuel filter yesterday. But before that we disconnected the fuel pressure increase valve and the didn't shut off.
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Wednesday, November 25th, 2009 AT 11:38 AM
Tiny
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  • MECHANIC
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Are you refering to the regulator? Also, how much pressure was the pump producing?
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Wednesday, November 25th, 2009 AT 11:43 AM
Tiny
GGORM
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We are going to check that soon, how much should it produce? What is the best way to test the crankshaft position sensor?
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Wednesday, November 25th, 2009 AT 11:57 AM
Tiny
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  • MECHANIC
  • 109,645 POSTS
THe fuel pressure should be between 48 and 55PSI. Here is a how to for checking it and the fuel pressure regulator:

https://www.2carpros.com/how_to/how_to_check_fuel_pressure.htm

As far as the crank sensor, you will need a volt meter. Set it to AC voltage output. Connect it to the sensor and crank the engine. The sensor should generate a voltage signal of about 2 volts. Make sure you disconnect the output wiring except to your meter. Otherwise, the engine can start.

Please be careful doing this. Make sure to protect your hands, body...
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Wednesday, November 25th, 2009 AT 10:41 PM

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