You are here:
- Home
- Autos
- Auto Repair
- American Motors
- 84 CJ7 258-6 Starting Problem
American Motors/84 CJ7 258-6 Starting Problem
Advertisement
Question
When I turn the key to "start" the engine turns over and runs untill I place the key to "Run" and
the engine shuts down. It does this every time I try to start the Jeep. What is the potential culprits and what is the test procedure?
I don't have much experience on the newer AMC/Jeeps with an ECU.
However, I would recommend checking the following:
1) Ignition switch located on the steering column. It is the switch that the key actually moves to crank the engine. The key switch has a rod that moves the switch. I have seen them out of adjustment or bad.
2) Engine ignition module. Especially the Motorcraft unit.
3) Check for voltage at the (+) side of the coil during cranking and when running. USe a voltmeter, not a test light. It should be around 12V when cranking, around 9V running.
4) Use a voltmeter to monitor the (-) side of the coil. It should pulse during cranking, probably constant when running.
Let me know what you find.
Kevin
- Add to this Answer
- Ask a Question
| Rating(1-10) | Knowledgeability = 10 | Clarity of Response = 10 | Politeness = 10 |
| Comment | Kevin Thank you very much.There was no power to the coil side. It is probably the switch. I did a Jeep fix running a wire to the CB radio which is on the ignition side untill I can get a new switch. It is running great. Tommy | ||
Related Articles
Kevin Pilotte
Expertise
I can answer many technical questions relating to AMC vehicles prior to 1979. I also have experience with Rambler & Nash vehicles.
Experience
I am a former AMC technician, service writer and service manager. I have worked in AMC dealers in Illinois in the 70's. After college, I was a Field Service Rep for American Motors Sales Corporation, working out of the Chicago Zone office. I traveled to AMC dealers assisting in the diagnosis and repair of AMC vehicles. I was also the Area Training Manager for DeLorean Motor Company. I have 10+ years as an Automotive Instructor. I have modified and restored
numerous AMC vehicles. I have been working on AMC vehicles for over 30 years.
Organizations
I have been an ASE Certified Master Technician since 1975. This includes L1. I am also currently a Toyota Certified Master Diagnostic Technician.
Publications
I have articles in "American Motoring", the official publication of the American Motors Owners Association. They are the largest AMC club in the world.
Education/Credentials
I have a certificate I printed out from a website.
©2012 About.com, a part of The New York Times Company. All rights reserved.