1991 Oldsmobile Ciera crank but no spark

Tiny
MIKESMITH2107
  • MEMBER
  • 1991 OLDSMOBILE CIERA
  • 164,000 MILES
I recently replaced the engine on my car, I also replaced the crank position sensor, knock sensor. When I crank the vehicle I am getting no spark to the plugs. I have power going to the ignition control module. I have check grounds, changed coil packs. What else could cause no spark?
Saturday, September 21st, 2013 AT 12:10 PM

7 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Scan for codes first
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Saturday, September 21st, 2013 AT 1:47 PM
Tiny
MIKESMITH2107
  • MEMBER
  • 4 POSTS
At first I had a knock sensor code, replaced it and code went away. That was the only one that showed up. I am about to change the cam positioning sensor and see if that works.
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Saturday, September 21st, 2013 AT 8:53 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Check fuses underhood and dash proior to changing parts. Then check resistance of cam sensor as it may be ok then take ignition module to auto parts and see if tha tis good. They can check it.
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Sunday, September 22nd, 2013 AT 5:46 AM
Tiny
MIKESMITH2107
  • MEMBER
  • 4 POSTS
Where are the fuses under the hood, checked all the fuses in the glove box, all where good, havent checked the relay's yet. Ignition control module was checked at auto zone, and passed all of them.
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Sunday, September 22nd, 2013 AT 2:16 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Sorry screwed u pon that one car is old so you forget. It's fuse 1 in car. Also fuse2 check with attest light
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Sunday, September 22nd, 2013 AT 3:19 PM
Tiny
MIKESMITH2107
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  • 4 POSTS
All fuses are good
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Wednesday, September 25th, 2013 AT 11:57 AM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Do wha ti said in first reply then go to how to repair to find out what system is screwd up cross A&B on aldl and watch serive engine ight flashes it does a series of 3 I time then 2 +12 etc. You stil haven't don e that
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Wednesday, September 25th, 2013 AT 12:43 PM

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