jeep 2.5L automatic, as I turn the key to start I have spark out of coil but when turning the engine over to start I loses the power out of the coil and when you stop trying to turn it over the

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Testimonial: "Jeff I really thank you for helping me with this, I do this for a living and this has me stumped, THANK YOU."

• By Jeff Turcotte Sep 30, 2011

  Jeff Turcotte Level 3

  

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2. • By Ricky Gittins Sep 30, 2011

   • What am I looking for Jeff

3. • By Jeff Turcotte Sep 30, 2011

   • Is the wire on the correct terminal of the solenoid? Is it connected to the coil positive terminal? Is the wire possibly broken under the insulation?

4. • By Ricky Gittins Sep 30, 2011

   • there is a small relay (I think it's a relay) mounted on the right fender with a red/white stripe wire (with black ground wire attached) any ways it is corroded, but I don't know what it is, but the wire is red/white stripe

5. • By Jeff Turcotte Sep 30, 2011

   • There should not be a ground wire attached. That wire is to power your coil while the engine is cranking. The relay is actually your starter solenoid, as seen on the diagram above.

6. • By Ricky Gittins Sep 30, 2011

   • while cranking I have power to the coil, I read this but don't understand the abreviations, I had one power supply wire to the muc. that had lost its feed from the battery preventing power the the dist. from the muc. Once I supplied power to the red wire in the bulk head connector #72 the jeep started on first crank. There is two (2) battery feeds to the muc. and I had lost one of them to a broken wire in the dash near the bulk head connector.

7. • By Jeff Turcotte Sep 30, 2011

   • I don't understand that either--don't know what they mean by "muc." So you have power to the coil but no sparks. You only get sparks when you are just turning the ket to start and when you let off the key? Have you swapped out the ignition module in the distributor?

8. • By Ricky Gittins Sep 30, 2011

   • Yes to the turning of the key, but the dist. only has a pick-up coil and the ignition mod. is on the left rear fender

9. • By Ricky Gittins Sep 30, 2011

   • now I know the steering column is a chevy column (or just like one) it has the switch on the lower column, what do you think about that as the culpit

10. • By Ricky Gittins Sep 30, 2011

    • The way I discribe it is when the engine turns over the coil primary is grounding out

11. • By Jeff Turcotte Sep 30, 2011

    • OK, if the pickup coil looks OK, I would suspect the module. If the coil is getting power when the key is turned to start, then so does the module. You should verify the red/white wire is getting power to the module. If not, it's the wire--not the ignition switch.
      You do have a GM Saginaw column with the switch on the side, but I don't think that's the problem in this case.

12. • By Ricky Gittins Sep 30, 2011

    • Cool, I'll test that wire, yes on the column, I turned the key to the start position and tried starting it from the starter solinod, the results were the same, The possitive side of the coil gets brighter when trying to crank engine, alright i'm going to test it, thanks again. I'll let you know the results.

13. • By Jeff Turcotte Sep 30, 2011

    • The coil normally runs on 9 volts, as the power from the run position of the key goes thru the ballast resistor. When the key is turned to start, you are getting a full 12 volts from the solenoid direct to the coil. That is why your test light is brighter.

14. • By Ricky Gittins Oct 01, 2011

    • well I have power to the ignitiom mod. something is leading me back to the pick up coil, I am getting info from a proff. michells repair, hell he pays good money to get the latest update, it has all the test proceedures, this jeep has me ******, I WIN Always,

15. • By Jeff Turcotte Oct 01, 2011

    • If you have the spec for the pick up coil and an ohmmeter, I would check it. Because the current there is minimal, they do not usually fail unless there is an accidental power source applied. My bet is on the module.

16. • By Ricky Gittins Oct 01, 2011

    • well it's alive, and you were right on, Ignition mod was bad, it was a new one, so after testing I went and replace it and varrrrrooooom

17. • By Jeff Turcotte Oct 01, 2011

    • cool beans, have fun with it.

18. • By Ricky Gittins Oct 02, 2011

    • Thanks again.

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