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-   -   Random No Crank problems (http://www.wranglerforum.com/f282/random-no-crank-problems-115123.html)

TeeJay1998 09-28-2011 09:40 AM

Random No Crank problems
 
This is my first post here, I have a 98 TJ with the 2.5L. I have a random problem where my jeep will not crank (turn over) whatsoever. I sometimes hear the solenoid on the starter click, but other than that nothing but the brake indicator light comes up. Im getting full battery power, all guages and fuel pump come on. I replaced the starter, starter solenoid, and starter relay. Still, randomly I have this problem. The battery and alt have been load tested and both are 100%, which leads me to believe this may be a connection or wiring issue somewhere. If it will turn over, it will start right up and have 0 issues driving. I am really unsure where else to look and was hoping someone else had some insight on where to look next?

Jerry Bransford 09-28-2011 10:15 AM

I'd first closely verify the battery cable and connections at both ends of the cables. If those are all good (tight, too), I'm thinking ignition switch at this early point.

TeeJay1998 09-28-2011 10:36 AM

Thank you for your reply Jerry. I was afraid it may be an ignition switch myself. I have been through and cleaned and reconnected these cable on the battery and starter side several times through this ordeal. I was just curious if there was any way to test an ignition switch, or is it just a replace and see if it fixes it

Jerry Bransford 09-28-2011 11:08 AM

If the small starter relay inside the power distribution center is energizing when the starter isn't working, the ignition switch is ok. If the small starter relay is not energizing, it's either the ignition switch or the wiring.

TeeJay1998 09-28-2011 11:28 AM

Very good information, thank you. The frustrating thing is that it is a random problem, so there is no telling when this may happen; making it totally unreliable to take anywhere.

geiman 09-28-2011 12:00 PM

Had this exact same problem on my 98 2.5l. I was able to get it to start by letting it sit and/or playing with the battery cables. One day it finally left me sit and wouldn't start no matter what. I was getting power to the starter relay, the starter seemed to test fine, the battery, cables, etc.. all tested fine. To be sure, I replaced the starter, ignition switch, and starter relay, all to no avail. Different batteries and cleaning the ground connections did nothing as well.

It ended up being my PCM connection; the one connector had come loose somehow. I unplugged the PCM connections, cleaned them, and put them securely back on. Now for the first time in the almost two years I've owned my Jeep, I can walk out and count on it reliably turning over every time I turn the key. This may not be your problem, but if everything else checks out you may want to look into this. It took me a while to find since I wasn't expecting it.

By the way, the PCM connections are the three plugs located right above your battery (they may have a plastic covering over them).

Gunz 09-28-2011 12:19 PM

I have this problem at times and my fix was to mash the red button on the key fob. I dont know exactly what it does but after I mash it the engine will turn right over. Hope this helps

TeeJay1998 09-28-2011 12:40 PM

Solid info. geiman, it sounds like you have felt the same type of frustration! I will check those connections as well. Hopefully I will find something out soon

geiman 09-28-2011 12:47 PM

I've definitely been there and know how frustrating it is. I wasted countless hours on that problem just to find out it was a stupid connection problem. Hopefully yours is as cheap to fix but easier to find. Good luck.

TeeJay1998 11-01-2011 11:59 AM

This may sound crazy but I have noticed that if I set the parking brake, I start to experience some of these no start problems. Everything has been tested, including the computer and everything is operating correctly. Is it at all possible that somehow the parking brake and not starting are related?

Jerry Bransford 11-01-2011 01:56 PM

Quote:

Originally Posted by TeeJay1998 (Post 1710413)
Is it at all possible that somehow the parking brake and not starting are related?

No.


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