mpace6a Posted October 21, 2012 Share Posted October 21, 2012 For some reason, my truck won't start with the ignition. It did before my engine swap, now it will not work. I'm guessing the sensor that prevents you from starting it without engaging the clutch is the problem, but don't know where it is, what would be wrong, and what to do about it. Suggestions? Link to comment Share on other sites More sharing options...
Eagle Posted October 21, 2012 Share Posted October 21, 2012 For some reason, my truck won't start with the ignition. It did before my engine swap, now it will not work. I'm guessing the sensor that prevents you from starting it without engaging the clutch is the problem, but don't know where it is, what would be wrong, and what to do about it. Suggestions? What year MJ? I think the clutch interlock was introduced in 1994, so it should not have been found on any MJ. Link to comment Share on other sites More sharing options...
mpace6a Posted October 21, 2012 Author Share Posted October 21, 2012 86, 2.8/ax5. Might have just wired something wrong then, but I don't think so Link to comment Share on other sites More sharing options...
Eagle Posted October 21, 2012 Share Posted October 21, 2012 Exactly what is it doing or not doing? Does it turn over but not fire, or not even turn over? Link to comment Share on other sites More sharing options...
mpace6a Posted October 21, 2012 Author Share Posted October 21, 2012 When I tun the key on I get interior and dash lights, when I turn to ignition, nothing happens, with or without the clutch depressed Link to comment Share on other sites More sharing options...
Eagle Posted October 22, 2012 Share Posted October 22, 2012 When I tun the key on I get interior and dash lights, when I turn to ignition, nothing happens, with or without the clutch depressed Let's use better terminology. "On" = "ignition." You have ignition when the key is on the On or Run position, otherwise the engine wouldn't run. When you turn the key beyond On to the Start position, all accessories should be bypassed and the starter should engage. So if by "on" you mean the run position, you should have instrument warning lights, but the ignition switch should not be turning on any interior lights. If by "ignition" you mean "Start," then you need to figure out why the starter isn't engaging. Have you checked the starter relay? Can you jumper to the solenoid and engage the starter? If not, the solenoid may be bad. If the solenoid clicks but the starter doesn't do anything, the starter is bad. Link to comment Share on other sites More sharing options...
mpace6a Posted October 22, 2012 Author Share Posted October 22, 2012 Yes to the above, and it will start if we jump the solenoid, but will not start with the key, so imbtrying to diagnose why the key will not work. This is the first vehicle I've had to do more work than basic maintenance, so everything I know has come from this forum and my chilton manual. Link to comment Share on other sites More sharing options...
Eagle Posted October 23, 2012 Share Posted October 23, 2012 Did you test the starter relay? If you know that's good, then you need to check the ignition switch. Link to comment Share on other sites More sharing options...
mpace6a Posted October 23, 2012 Author Share Posted October 23, 2012 How do you test the starter relay? Link to comment Share on other sites More sharing options...
flint54 Posted October 24, 2012 Share Posted October 24, 2012 Here's "Relay 101": http://www.bcae1.com/relays.htm#demo First determine which relay is for the starter (dist box cover will say) Then pull it. Then determine which terminals are the coil and which are the line/load. Energize the coil and check voltage. The terminal numbers are pretty common, I think 30 is line (hot), 85 is coil ground, 86 is switched hot to coil, and 87 is load (to starter). If you get nothing at terminal 86 socket when operating the ignition switch, you may have a bad switch. Link to comment Share on other sites More sharing options...
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