Jeep won't start - JeepForum.com
 
LinkBack Thread Tools
post #1 of 10 Old 08-24-2015, 05:21 PM Thread Starter
chevydude5o2
Registered User
1997 XJ Cherokee 
 
Join Date: Jul 2008
Location: san jose, ca
Posts: 110
Jeep won't start

I have a 97 xj 4.0 that won't turn over, when I turn the key everything works except it won't start or turn over, I do here slight clicking on the passenger side inside the jeep but not the from starter I think it's the relays clicking. I already changed the starter and cleaned up the neutral safety switch, we can start it at the starter with a screw driver, the battery tested good. It won't start in park or neutral. I'm really confused, it was working fine yesterday, went to the store and then nothing, any ideas??


1997 XJ - 3in lift 31in mud terrains
1994 xj - RIP

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
chevydude5o2 is offline  
Sponsored Links
Advertisement
 
post #2 of 10 Old 08-24-2015, 05:38 PM
CJ7-Tim
Real Jeeps have dents
 
CJ7-Tim's Avatar
2000 XJ Cherokee 
 
Join Date: Apr 2002
Location: out in the garage - Minneapolis
Posts: 27,662
Clicking and not starting is usually a low voltage issue from:

a failing battery
a failing alternator
dirty, corroded, damaged, or loose wire connections
internally corroded battery wires
leaving the lights on

Perform routine maintenance of the start and charge systems. Remove, clean, and firmly reconnect all the wires and cables to the battery, starter, and alternator. Look for corroded or damaged cables or connectors and replace as needed. Copper wires should be copper color, not black or green. Do the same for the grounding wires from the starter to engine block, the ground wires at the coil, and the ground wires from the battery and engine to the Jeep's frame/body. You must remove, wire brush, and clean until shiny the cable/wire ends and whatever they bolt to.

Jeeps do not tolerate low voltage, bad wire connections, or poor grounds.

Place your DVOM (Digital Volt Ohm Multi-Meter) on the 20 volt scale. First check battery voltage by placing your multi-meter's positive lead on the battery's positive post ( the actual post, not the clamp ) and the negative lead on the negative post. You need a minimum of 12 volts to continue testing. Next, leave your meter connected and take a reading while the engine is cranking. Record this voltage reading. Now connect your positive lead to the battery terminal stud on the starter and the negative lead to the starter housing. Again, crank the engine and record the voltage reading. If the voltage reading at the starter is not within 1 volt of battery voltage then you have excessive voltage drop in the starter circuit.

Typical voltage drop maximums:
starter circuit (including starter solenoid) = 0.60 volt
battery post to battery terminal end = zero volts
battery main cable (measured end to end) 0.20 volt
starter solenoid = 0.20 volt
battery negative post to alternator metal frame = 0.20 volt
negative main cable to engine block = 0.20 volt
negative battery post to starter metal frame = 0.30
battery positive post to alternator b+stud = 0.5 volt with maximum charging load applied (all accessories turned on)

Test the output at the alternator with your volts/ohms multi-meter. You should be measuring 13.8-14.4 volts. Load testing the alternator is still recommended.

Exchange the ASD relay with a similar relay in the fuse box under the hood near the battery.

Have your helper turn the ignition key to START while you tap on the starter with a hammer. If the engine starts, you probably need a new starter.
Have the battery, starter, and the alternator Load Tested for proper function in a test machine that applies a simulated work load. Handheld testers are inaccurate and will often pass faulty parts.

.

A recent Gallup public opinion poll shows the NRA, at 58% approval, has a higher approval rating than either Hillary Clinton or Barack Obama.

Progressive Liberalism: Bringing you new Healthcare ideas so wonderful, they have to include mandatory participation ...

Originally Posted by Ronald W. Reagan: Government is not the solution to our problems; Government is the problem.
CJ7-Tim is offline  
post #3 of 10 Old 08-24-2015, 05:49 PM Thread Starter
chevydude5o2
Registered User
1997 XJ Cherokee 
 
Join Date: Jul 2008
Location: san jose, ca
Posts: 110
Quote:
Originally Posted by CJ7-Tim View Post
Clicking and not starting is usually a low voltage issue from:

a failing battery
a failing alternator
dirty, corroded, damaged, or loose wire connections
internally corroded battery wires
leaving the lights on

Perform routine maintenance of the start and charge systems. Remove, clean, and firmly reconnect all the wires and cables to the battery, starter, and alternator. Look for corroded or damaged cables or connectors and replace as needed. Copper wires should be copper color, not black or green. Do the same for the grounding wires from the starter to engine block, the ground wires at the coil, and the ground wires from the battery and engine to the Jeep's frame/body. You must remove, wire brush, and clean until shiny the cable/wire ends and whatever they bolt to.

Jeeps do not tolerate low voltage, bad wire connections, or poor grounds.

Place your DVOM (Digital Volt Ohm Multi-Meter) on the 20 volt scale. First check battery voltage by placing your multi-meter's positive lead on the battery's positive post ( the actual post, not the clamp ) and the negative lead on the negative post. You need a minimum of 12 volts to continue testing. Next, leave your meter connected and take a reading while the engine is cranking. Record this voltage reading. Now connect your positive lead to the battery terminal stud on the starter and the negative lead to the starter housing. Again, crank the engine and record the voltage reading. If the voltage reading at the starter is not within 1 volt of battery voltage then you have excessive voltage drop in the starter circuit.

Typical voltage drop maximums:
starter circuit (including starter solenoid) = 0.60 volt
battery post to battery terminal end = zero volts
battery main cable (measured end to end) 0.20 volt
starter solenoid = 0.20 volt
battery negative post to alternator metal frame = 0.20 volt
negative main cable to engine block = 0.20 volt
negative battery post to starter metal frame = 0.30
battery positive post to alternator b+stud = 0.5 volt with maximum charging load applied (all accessories turned on)

Test the output at the alternator with your volts/ohms multi-meter. You should be measuring 13.8-14.4 volts. Load testing the alternator is still recommended.

Exchange the ASD relay with a similar relay in the fuse box under the hood near the battery.

Have your helper turn the ignition key to START while you tap on the starter with a hammer. If the engine starts, you probably need a new starter.
Have the battery, starter, and the alternator Load Tested for proper function in a test machine that applies a simulated work load. Handheld testers are inaccurate and will often pass faulty parts.
All the connections look good, the starter is brand new, we can get it to start by touching a screw driver to the connections on the starter, also the battery is good, it was tested. The clicking is not coming from the starter, it very soft coming from inside of the cab from the relays I think, I don't think it's a power issue at all.

1997 XJ - 3in lift 31in mud terrains
1994 xj - RIP

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
chevydude5o2 is offline  
 
post #4 of 10 Old 08-24-2015, 05:56 PM
CJ7-Tim
Real Jeeps have dents
 
CJ7-Tim's Avatar
2000 XJ Cherokee 
 
Join Date: Apr 2002
Location: out in the garage - Minneapolis
Posts: 27,662
The connections "look good" or test good ? If the starter is rebuilt, and has a 'Lifetime Warranty", it is suspect.

Clicking and not starting is almost always poor quality connections.

.

A recent Gallup public opinion poll shows the NRA, at 58% approval, has a higher approval rating than either Hillary Clinton or Barack Obama.

Progressive Liberalism: Bringing you new Healthcare ideas so wonderful, they have to include mandatory participation ...

Originally Posted by Ronald W. Reagan: Government is not the solution to our problems; Government is the problem.
CJ7-Tim is offline  
post #5 of 10 Old 08-24-2015, 06:04 PM Thread Starter
chevydude5o2
Registered User
1997 XJ Cherokee 
 
Join Date: Jul 2008
Location: san jose, ca
Posts: 110
Quote:
Originally Posted by CJ7-Tim View Post
The connections "look good" or test good ? If the starter is rebuilt, and has a 'Lifetime Warranty", it is suspect.

Clicking and not starting is almost always poor quality connections.
If we can get it to start by touching the connections on the starter with a screwdriver would it still be a power issue or maybe an issue with sending the signal from the ignition switch?

1997 XJ - 3in lift 31in mud terrains
1994 xj - RIP

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
chevydude5o2 is offline  
post #6 of 10 Old 08-24-2015, 06:38 PM
jonsnw93
Registered User
1996 XJ Cherokee 
 
Join Date: Oct 2012
Location: Kalamazoo
Posts: 442
You said it won't start in park or neutral. Does it crank or nothing, if nothing it could very well be your NNS
jonsnw93 is offline  
post #7 of 10 Old 08-24-2015, 06:41 PM Thread Starter
chevydude5o2
Registered User
1997 XJ Cherokee 
 
Join Date: Jul 2008
Location: san jose, ca
Posts: 110
Quote:
Originally Posted by jonsnw93 View Post
You said it won't start in park or neutral. Does it crank or nothing, if nothing it could very well be your NNS
I already took apart and cleaned it, everything looked good, it doesn't crank, the only way to get it started right now is to touch the connections on the starter with a screwdriver

1997 XJ - 3in lift 31in mud terrains
1994 xj - RIP

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
chevydude5o2 is offline  
post #8 of 10 Old 08-24-2015, 06:43 PM
jonsnw93
Registered User
1996 XJ Cherokee 
 
Join Date: Oct 2012
Location: Kalamazoo
Posts: 442
The NNS could still be bad. I would pull your starter first and have an auto parts store test it. The solenoid could be bad
jonsnw93 is offline  
post #9 of 10 Old 08-25-2015, 06:34 AM
MaskedMallard
Registered User
2001 XJ Cherokee 
 
Join Date: May 2009
Location: MN
Posts: 759
Garage
Do you have an alarm system?

Have you changed ignition keys recently?
MaskedMallard is offline  
post #10 of 10 Old 08-25-2015, 09:54 AM
bluejunior
Registered User
 
bluejunior's Avatar
2001 XJ Cherokee 
 
Join Date: Jan 2009
Location: Dallas
Posts: 6,809
Quote:
Originally Posted by MaskedMallard View Post
Do you have an alarm system?

Have you changed ignition keys recently?
The security system lets it start and run for 3 seconds, then kills the engine. I am overly familiar since the sensor in my steering column went bad. Had to get a new PCM for closer to $300 than I'd like, but his symptoms aren't that.

Could be a misalignment of the NSS rather than a bad NSS. Do your reverse lights come on normally? You could also test it by disconnecting the NSS and jumping the wiring harness to the PCM to guarantee it thinks it's in park.

Have you checked for good voltage going into the starter relay while a buddy turns the key for you? that would be a good way to test that it's getting proper signal.

I don't think it's your starter or the power wire for it if it starts easily from jumped terminals, though any store brand "lifetime warranty" part is suspect as others have mentioned. Have you tried swapping the starter relay with one of the others to make sure it's not the relay itself?

I know that's several things but combined they shouldn't take long and would give more information.

Lifted, Locked, Stiffened

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
bluejunior is offline  
Reply

Tags
electrical , ignition , nss , starter , starting

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.



Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may 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
Trackbacks are Off
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome