NAXJA Forums -::- North American XJ Association  

Go Back   NAXJA Forums -::- North American XJ Association > NAXJA Unibody Jeep Technical Forums > Jeep Cherokee XJ (1984 - 2001) > OEM Tech Discussion
HOME Member FAQ Sponsor Info Rules Bylaws E-Mail

OEM Tech Discussion Forum for OEM (Original Equipment) or stock XJs and MJs.

Reply
 
Thread Tools Display Modes
  #1  
Old November 17th, 2017, 10:36
greenlawnjeeper greenlawnjeeper is offline
NAXJA Forum User
 
Join Date: Jun 2004
Location: NY
Posts: 82
Thought I fixed it, now no crank.

I have a (late) '96 with 120K miles, the 4.0 HO. It was starting up good but sometimes recently needed the throttle pedal floored on restarts. The other day when doing this, the battery started going weak and I thought I was dead but it did fire up. I googled that condition and found many causes. 2 days ago I tested fuel pressure at the rail and got 42-43 lbs running with a quick drop after shut off. The late 96's call for 49 plus minus a couple. I put a new battery in yesterday and got 47 psi running which is in the range but still had the drop off after shut off. I did about 4 tests of driving, shutting it off, waiting a bit and restarting. On those restarts, it fired up immediately so I thought all was OK. Today it fired up immediately cold, I drive around for 10 minutes and park back in the driveway. Go out 15 minutes later to restart and no crank. Lights work, gauges come on. I even go put my old battery back in and get the same result. Tapped the starter with a hammer for good measure. What the heck happened? Scan tool shows no codes. Coinsidentially did the CPS or ignition switch fail? Thanks, Fred
Reply With Quote
  #2  
Old November 17th, 2017, 11:25
old_man's Avatar
old_man old_man is offline
NAXJA Member
 
Join Date: May 2003
Location: Loveland, Colorado
Posts: 15,303
Re: Thought I fixed it, now no crank.

If you have a good battery, then the most common things to look at would be the starter itself and the neutral safety switch on the side of the transmission.

If you crawl under, you can jumper the 12v power cable on the starter over to the small control terminal on the starter, and the starter should spin and engage. If not, verify that there is 12v on the large terminal. If there is voltage and no response from the starter, then the starter is bad.

If it cranks when jumpering the starter, then you most likely have a bad neutral safety switch. Try moving the shifter to neutral and back and forth between the gears. If it cranks in some positions but not the others, it is the switch.
__________________
Tom Houston - Former Colorado Chapter President & Terminal Adrenaline Junkie
Loveland, Colorado
You're just jealous because the voices don't talk to you.
Reply With Quote
  #3  
Old November 17th, 2017, 11:29
greenlawnjeeper greenlawnjeeper is offline
NAXJA Forum User
 
Join Date: Jun 2004
Location: NY
Posts: 82
Re: Thought I fixed it, now no crank.

Thanks Tom, I will try that and I didn't think of the NSS.
Reply With Quote
  #4  
Old November 17th, 2017, 16:12
greenlawnjeeper greenlawnjeeper is offline
NAXJA Forum User
 
Join Date: Jun 2004
Location: NY
Posts: 82
Re: Thought I fixed it, now no crank.

Unless I did something wrong, it didn't jump. I cleaned the NSS and will put it back in tomorrow. I have an old starter which I'll try mext if necessary.
Reply With Quote
  #5  
Old November 17th, 2017, 18:50
old_man's Avatar
old_man old_man is offline
NAXJA Member
 
Join Date: May 2003
Location: Loveland, Colorado
Posts: 15,303
Re: Thought I fixed it, now no crank.

Good plan.
__________________
Tom Houston - Former Colorado Chapter President & Terminal Adrenaline Junkie
Loveland, Colorado
You're just jealous because the voices don't talk to you.
Reply With Quote
  #6  
Old November 18th, 2017, 13:18
greenlawnjeeper greenlawnjeeper is offline
NAXJA Forum User
 
Join Date: Jun 2004
Location: NY
Posts: 82
Re: Thought I fixed it, now no crank.

Quote:
Originally Posted by old_man View Post
Good plan.
Ok, it APPEARS to have been the NSS. It started right up after I installed the cleaned up switch. I lubed the internals with d-grease. I had cleaned the switch prior 7 years ago. I am not very happy with the crank speed after the new battery. Maybe I will treat the girl to a new HD starter. Before I hand the keys over to my wife, I want to subject it to a few more days of testing just to make sure it's 100%, thanks.
Reply With Quote
  #7  
Old November 18th, 2017, 13:49
greenlawnjeeper greenlawnjeeper is offline
NAXJA Forum User
 
Join Date: Jun 2004
Location: NY
Posts: 82
Re: Thought I fixed it, now no crank.

UPDATE, just tried to start it and NOTHING, no crank, same as before. Lights work, gauges come on etc. Tomorrow I'll swap in my old oem starter which was verified OK this morning by both Autozone and Advance Auto.
Reply With Quote
  #8  
Old November 18th, 2017, 15:16
lawsoncl lawsoncl is offline
NAXJA Forum User
 
Join Date: Jan 2006
Location: North Idaho
Posts: 4,537
Re: Thought I fixed it, now no crank.

Quote:
Originally Posted by greenlawnjeeper View Post
UPDATE, just tried to start it and NOTHING, no crank, same as before. Lights work, gauges come on etc. Tomorrow I'll swap in my old oem starter which was verified OK this morning by both Autozone and Advance Auto.

While it's in a no-crank status, check if you get voltage to the starter. That will tell you if it's the starter or not not.
Reply With Quote
  #9  
Old November 18th, 2017, 17:27
greenlawnjeeper greenlawnjeeper is offline
NAXJA Forum User
 
Join Date: Jun 2004
Location: NY
Posts: 82
Re: Thought I fixed it, now no crank.

Quote:
Originally Posted by lawsoncl View Post
While it's in a no-crank status, check if you get voltage to the starter. That will tell you if it's the starter or not not.
Thanks, is there such a thing as a dead spot on a starter? Where, if it ends up on this spot the starter won't crank?
Reply With Quote
  #10  
Old November 18th, 2017, 23:04
Hypoid's Avatar
Hypoid Hypoid is offline
NAXJA Member
 
Join Date: Jul 2006
Location: Golden, CO
Posts: 6,999
Re: Thought I fixed it, now no crank.

There is such a thing as marginal cables and connections.
__________________
The Lost Boys' motto: We don't know where we are going, but we'll be there for awhile...
Reply With Quote
  #11  
Old November 19th, 2017, 09:38
greenlawnjeeper greenlawnjeeper is offline
NAXJA Forum User
 
Join Date: Jun 2004
Location: NY
Posts: 82
Re: Thought I fixed it, now no crank.

I swapped in the old (oem) starter verified good by Autozone and Advance Auto, it started right up and cranked up quicker than the other. I'll play it by ear, do some test runs and only shut it off when I'm back in the driveway. If no problems, I'll buy a new starter. I replaced the oem one (which is in the car now) at about 80K miles when I had some starting issues I thought mighy have been starter related, so I'm not entirely comfortable leaving it in. Thanks for the help. Hopefully you've heard thelast from me on this problem.
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
I thought I had the cooling system fixed sleestack OEM Tech Discussion 10 July 6th, 2010 16:36
232 crank vs 258 crank | race stroked motor Nick675 Jeep Street and Performance 3 September 2nd, 2009 18:25
Crank crank crank crank crank vroom gone postal OEM Tech Discussion 27 November 25th, 2006 10:47
Just thought i'd let you know... mojojojo Midwest Chapter 2 September 18th, 2006 17:41
crank-crank-crank-crank-cra... [wait...] crank-crank-START! iBran OEM Tech Discussion 20 October 21st, 2005 18:33


All times are GMT -7. The time now is 04:12.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
NAXJA and NAXJA logo's Copyright NAXJA. All content/images Copyright NAXJA 1999-2014