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Car has no spark

Tiny
KEVIN FAIRMAN
  • MEMBER
  • 1989 CHEVROLET CAPRICE
  • 5.0L
  • V8
  • 2WD
  • AUTOMATIC
  • 118,000 MILES
Engine turns over, fuel pump works, fuel injectors work, changed computer, changed distributor HEI module, checked the pick up coil, changed the ignition coil changed electronic spark control module, checked wiring, checked transmission position switch, changed the idle air control injector actuator, changed spark plugs, changed spark plug wires, checked the ignition switch. There's no power to the ignition coil. What else could it be?
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Friday, October 18th, 2019 AT 6:30 AM

21 Replies

Tiny
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Good morning,

The wire to the Coil, the pink wire, does it have battery voltage with the key on?

Roy
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Friday, October 18th, 2019 AT 6:49 AM
Tiny
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Yes.
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Friday, October 18th, 2019 AT 1:42 PM
Tiny
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Then you have power to the coil.

What was the resistance of the distributor pick up coil when you tested it?

Roy
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Friday, October 18th, 2019 AT 1:46 PM
Tiny
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  • 13 POSTS
It was about 1000 ohms
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Friday, October 18th, 2019 AT 1:52 PM
Tiny
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Just to verify, does the rotor turn when the engine cranks?

Roy
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Friday, October 18th, 2019 AT 6:01 PM
Tiny
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I show 3 replies to the question but nothing showed up.

Can you resend?

Roy
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Saturday, October 19th, 2019 AT 5:23 AM
Tiny
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  • 13 POSTS
Yes, the rotor turns when the engine is cranked.
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Saturday, October 19th, 2019 AT 6:27 AM
Tiny
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Okay use a test light and probe the tachometer terminal in the cap. Crank the engine and see if it flashes.

Roy
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Saturday, October 19th, 2019 AT 7:21 AM
Tiny
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  • 13 POSTS
Okay, I'll try that.
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Saturday, October 19th, 2019 AT 1:40 PM
Tiny
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Keep me updated.

Roy
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Saturday, October 19th, 2019 AT 1:50 PM
Tiny
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  • 13 POSTS
I will.
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Saturday, October 19th, 2019 AT 1:58 PM
Tiny
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Any update?

Roy
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Sunday, October 20th, 2019 AT 6:33 AM
Tiny
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I found the problem, it was pickup coil, it measured 1k ohms across the terminals but the coil itself was shorted to ground.
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Tuesday, October 22nd, 2019 AT 2:43 PM
Tiny
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The ohm reading was spot on.

If it were shorted, it would read 0.00

Did you replace the ignition coil or pick up coil?

Roy
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Tuesday, October 22nd, 2019 AT 2:46 PM
Tiny
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I replaced the ignition coil but I only checked the pickup coil.
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Tuesday, October 22nd, 2019 AT 2:57 PM
Tiny
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We would have got to that if you would have done the test with the test light on the tach terminal.

Glad you found the issue.

Roy
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Tuesday, October 22nd, 2019 AT 3:06 PM
Tiny
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Thank you for your help.
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Tuesday, October 22nd, 2019 AT 4:05 PM
Tiny
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You are welcome.

Always glad to help.

Roy
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Thursday, October 24th, 2019 AT 2:40 AM

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