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1991 Chevy Camaro Engine cranks but wont start

Tiny
SVENSTER
  • MEMBER
  • 1991 CHEVROLET CAMARO
  • V8
  • 2WD
  • AUTOMATIC
  • 148,000 MILES
Car has been stored in garage for year ,i have started it up every month and drove around block for little. last
five times engine was running until hot an then it would
stall and wont start. I let it sit over night and it did start
and same thing happened . This happened about 5 times now it wont start at all . I took the plug out and checked for spark there is no spark whatsoever. I put 12volt tester on coil and it does not show any power .
Coil is about 12 months old. I went and purchased new coil same thing.What would be a possible problem?


http://www.2carpros.com/forum/automotive_pictures/581129_Camero_for_craigs_list_010_1.jpg

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Friday, October 8th, 2010 AT 4:00 PM

11 Replies

Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Pink wire is primary voltage to the coil. That circuit gets voltage from ignition switch, key on. You might back track the wire look at any connectors you come to. Make sure there is voltage on both sides of connector. If worse comes to worse, you may have to check feed to and from the ignition switch.
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Saturday, August 17th, 2019 AT 5:01 PM
Tiny
SVENSTER
  • MEMBER
  • 6 POSTS
I did check both sides and there is power when ignition is turned on where do I go next. My tester is primitive and it shows only 5-50 volts so there is at least 5 volts for sure going in and out of coil.
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Saturday, August 17th, 2019 AT 5:01 PM
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
On the negative side of the coil, there should be a pulse with engine cranking. If no pulse, one possibility is the ignition module. Engine cranking do you have an injector pulse?
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Saturday, August 17th, 2019 AT 5:01 PM
Tiny
SVENSTER
  • MEMBER
  • 6 POSTS
Negative side on coil is the black thick wire coming from
center of distributer cap. Is that correct? And I can test
pulse with voltmeter I have by hooking it up in middle of distributer cap?
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Saturday, August 17th, 2019 AT 5:01 PM
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
No, that is secondary wire not primary. Small black wire. Use a testlite and see if lite pulses.

That wire in the center of cap is coil wire, you can take it loose from cap, hold close to engine ground, cranking, watch for spark to jump. If spark jumps, and no spark at plugs, I'd change the cap and rotor.
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Saturday, August 17th, 2019 AT 5:01 PM
Tiny
SVENSTER
  • MEMBER
  • 6 POSTS
I took the black coil wire off in middle of distributer and
exposed the there is no spark jumping when I hold it
close to the ground wire while engine cranking. What do
i do next?
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Saturday, August 17th, 2019 AT 5:01 PM
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
That primary ground wire, I was talking about, Should have a pulse, engine cranking. Use led testlite, the lite should brighten and dim, if not, suspect the ignition module or pick-up coil.
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Saturday, August 17th, 2019 AT 5:01 PM
Tiny
SVENSTER
  • MEMBER
  • 6 POSTS
Sorry I am bit confused. There is there is red and white
wire coming to the coil from wire harness coming from inside the car, there is a red and white wire going to
the bottom side of distributer from coil and there is a single thick black wire going from coil to a center of distributer cap. You saying thick black wire is secondary
ground and I need primary ground wire. Witch wire is primary ground? White wire?
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Saturday, August 17th, 2019 AT 5:01 PM
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
The info I looked at was for camaro rs, 5.0 litre engine. I was talking about the black wire, connector pin A2. The white wire should work, also.


https://www.2carpros.com/forum/automotive_pictures/170934_camaro_ignition_coil_1.jpg

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Saturday, August 17th, 2019 AT 5:01 PM
Tiny
SVENSTER
  • MEMBER
  • 6 POSTS
Ok. I only have simple volt meter two wires and little light on it, indicates between 5-50 volts can I use that
and if I hook black wire from volt meter to white wire
where do I hook the red without damaging anything.
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Saturday, August 17th, 2019 AT 5:01 PM
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
I'm not sure your meter will work for this? The red lead goes to voltage wire, black lead goes to chassis ground/metal part of engine.
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Saturday, August 17th, 2019 AT 5:01 PM

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