1994 Chevy S-10 Quits running

Tiny
OLDSROCKET
  • MEMBER
  • 1994 CHEVROLET S-10
  • 4 CYL
  • 2WD
  • MANUAL
  • 106,000 MILES
My 94 S10 with a 4 cyl 2.2 runs fine then will just die. When it dies and wont start, I can hear the fuelpump running. I plugged in a noid light to one of the injector plugs and it is not firing. Sometimes it will start agian in 10 seconds, sometimes 40 minutes later. It always starts when it is cold, it seems to happen after it is up to temp.
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Thursday, October 14th, 2010 AT 5:59 PM

7 Replies

Tiny
JDL
  • EXPERT
When the problem occurs, did you happen to visually check for spark at the plugs, engine cranking? The pink wire at the injector/s should be hot, key on, no crank, is it hot. If the computer doesn't see an rpm signal, it won't pulse the injector ground. The rpm signal comes from the crank sensor, through the ignition module, but, there could be other issues.
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Thursday, October 14th, 2010 AT 6:13 PM
Tiny
OLDSROCKET
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Thanks for the reply; With the key on after the engine dies, the pink injector wire is hot. Visually have no spark at the spark plug while cranking.
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Thursday, October 14th, 2010 AT 7:39 PM
Tiny
JDL
  • EXPERT
Right now, I think the problem is the crank sensor.
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Thursday, October 14th, 2010 AT 9:38 PM
Tiny
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Thanks; Is the crank sensor right below the coils? Where is the ignition module located?
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Friday, October 15th, 2010 AT 11:45 AM
Tiny
JDL
  • EXPERT
My info doesn't give the exact location of crank sensor. The spark plug wires go to the coil pack, the coil pack sits on top of the ignition module. The crank sensor wiring, plugs into the ignition module. Note the wiring colors in the diagram, track the wires.


http://www.2carpros.com/forum/automotive_pictures/170934_94_s10_ignition_module_1.jpg

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Friday, October 15th, 2010 AT 12:21 PM
Tiny
OLDSROCKET
  • MEMBER
Replaced the crank sensor, problem still exists. Is it possible a coil gets hot and quits working? Or maybe the control module itself?
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Friday, October 15th, 2010 AT 5:54 PM
Tiny
JDL
  • EXPERT
I hate to throw parts at anything. Yes, it could be the ignition module. Could also be a wiring problem, somewhere?
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Saturday, October 16th, 2010 AT 9:20 AM

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