Chevy Corsica Crankshaft Position Sensor

1991 CHEVROLET CORSICA
145,000 MILES • 6 CYL • FWD • AUTOMATIC
Avatar
TCAMBLER
  • MEMBER
  • 1 POST
My Corsica with 3.1 engine began stalling at highway speed a few days ago. After stopping for a short time it would restart and run again, at times for a considerable distance. The problem has seemed to get increasingly worse.

I replaced my fuel filter suspecting that to be the problem, but the problem reoccured after driving only a short distance. Again, after waiting a while the engine immediately restarted.

Researching the problem seems to indicate the crankshaft position sensor to be the problem. (The car has been riding low and bottoming out due to a need to replace the struts... I believe this may have led to the sensor becoming damaged)

I would appreciate any opinions and advice regarding this problem. I would also appreciate any diagrams and information about where the part is located and how to replace it.... I am a DIY mechanic and unable to take it to a garage. So I need to fix this myself.

Thanks
Aug 8, 2010 at 10:04 PM
Advertisement
Avatar
KHLOW2008
  • CERTIFIED EXPERT
  • 41,814 POSTS
Hi tcambler, Thank you for the donation. Replacing things without understanding if that is the cause can be costly without rectifying the problem. I would suggest retrieiving for trouble codes first. RETRIEVING CODES (NON-SCAN) 1.Turn ignition on. DO NOT start engine. SERVICE ENGINE SOON light should glow. Locate Assembly Line Data Link (ALDL) connector attached to control module wiring harness. Most ALDL connectors are located under dash on driver's side of vehicle. For exact location of ALDL, refer to appropriate COMPONENT LOCATIONS illustration in article SYSTEM/COMPONENT TESTS in this section. Turn ignition on with engine not running. Insert jumper wire from terminal "B" (diagnostic test terminal) to terminal "A" (ground) of ALDL connector. See Fig. 1 .


https://www.2carpros.com/forum/automotive_pictures/192750_ALDL93LuminaFig01_2.jpg

2.SERVICE ENGINE SOON light should begin to flash codes. Each code will be repeated 3 times. To exit diagnostic mode, turn ignition off and remove jumper wire from ALDL connector. READING TROUBLE CODES Example, FLASH, FLASH, pause, FLASH, longer pause, identifies Code 21. The first series of flashes are the first digit of trouble code. The second series of flashes are the second digit of trouble code. Trouble codes are displayed starting with the lowest numbered code. Each code is displayed 3 times. Codes will continue to repeat as long as ALDL test terminal is grounded.
Aug 9, 2010 at 8:16 AM
Avatar
MIKE SHELBY
  • MEMBER
  • 2 POSTS
I need to know where the crank shaft sensor is located. Searched all day and cannot find it on this engine.
Jan 24, 2017 at 10:27 AM (Merged)
Advertisement
Avatar
LOU P
  • CERTIFIED EXPERT
  • 118 POSTS
here is the location. hope this helps. Lou .
Image (Click to enlarge)
Attached Media
Jan 24, 2017 at 10:27 AM (Merged)
Avatar
  • MEMBER
  • 0 POST
Location of crank sensor
Jan 24, 2017 at 10:27 AM (Merged)
Avatar
ASEMASTER6371
  • CERTIFIED EXPERT
  • 52,796 POSTS
what motor??????????

Roy
Jan 24, 2017 at 10:27 AM (Merged)
Avatar
IRONMAN1959
  • MEMBER
  • 12 POSTS
I have a 1990 2.2L 4 cylinder and it appears that the sensor is on the firewall side below the intake manifold. This is what I found online, I looked there and I see a couple of wires going that way but is almost impossible to see without removing the intake manifold. And the intake manifold is almost impossible to remove without removing the head, (I know because I recently had my head off), so if it's a 2.2 good luck, if it's a 3.1 google it.
Jan 24, 2017 at 10:27 AM (Merged)