Help me diagnose 4/OD shift issue (possible NSS)
Newbie
Joined: Mar 2018
Posts: 5
Likes: 0
Year: 1999
Model: Cherokee (XJ)
Engine: 4.0
New to the XJ, not to forums/DIYs/getting my hands dirty...etc
Looking for guidance on what my next step(s) should be in my diagnosis.
Current symptoms:
- wonky shifting between 4th/OD at highway speeds, usually changes when hitting bumps or any kind of vertical movement
- cruise control does not engage when said wonky shifting occurs, but light DOES go on regardless.
- no CEL, but pulled the following codes via BT OBDII
P0705- trans range sensor circuit malfunction
P0740 - torque converter clutch circuit
P0751 - shift Solenoid A performance
P1718 - multiple
P1742 - multiple
- ABS light is also on but had been on previous to this issue.
So far, I have adjusted the throttle cable and also cleaned the NSS per the DIY instruction but to no avail.
I am mostly mechanically inclined but I'm terrible when it comes to electrical or wiring issues so I'd must rather replace the NSS vs doing some funky wiring work.
Thoughts?
Last transmission service is unknown so that was going to be my next step but wasn't going to do it until I was sure I did or did not need to pull the trans for swapping solenoids.
Looking for guidance on what my next step(s) should be in my diagnosis.
Current symptoms:
- wonky shifting between 4th/OD at highway speeds, usually changes when hitting bumps or any kind of vertical movement
- cruise control does not engage when said wonky shifting occurs, but light DOES go on regardless.
- no CEL, but pulled the following codes via BT OBDII
P0705- trans range sensor circuit malfunction
P0740 - torque converter clutch circuit
P0751 - shift Solenoid A performance
P1718 - multiple
P1742 - multiple
- ABS light is also on but had been on previous to this issue.
So far, I have adjusted the throttle cable and also cleaned the NSS per the DIY instruction but to no avail.
I am mostly mechanically inclined but I'm terrible when it comes to electrical or wiring issues so I'd must rather replace the NSS vs doing some funky wiring work.
Thoughts?
Last transmission service is unknown so that was going to be my next step but wasn't going to do it until I was sure I did or did not need to pull the trans for swapping solenoids.
Hi,
I got exactly the same 5 codes on my XJ as you have.
Did you allready find the solution for this problem?
Hope you can help me out and save some time :-)
Newbie
Joined: Mar 2018
Posts: 5
Likes: 0
Year: 1999
Model: Cherokee (XJ)
Engine: 4.0
I wiggled on the brake switch. After that cleared codes. Codes dont show up anymore. Seems like my problem is fixed. Thank you very much, this topic helpt me great. If problems comes back ill replace the brake switch :-)
::CF Moderator::
Joined: Aug 2011
Posts: 43,971
Likes: 1,578
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Your detailed explanation of the issue was very helpful in finding a diagnosis and repair.
Newbie
Joined: Mar 2018
Posts: 5
Likes: 0
Year: 1999
Model: Cherokee (XJ)
Engine: 4.0
Ill get an other brake light switch and try if that will help.
The codes keep coming back after clearing. My car drives normal. But when driving faster than approx 60 or 70 Mph my car starts shaking a bit when accelerating. Maybe that can be caused by this brake pedal switch not working properly?
Ill replace it :-)
Last edited by Arjan Lubbe; Nov 8, 2018 at 04:14 AM.
Thread
Thread Starter
Forum
Replies
Last Post
MD9NYC
Stock Grand Cherokee Tech. All ZJ/WJ/WK Non-modified/stock questions go here!
0
Mar 20, 2017 06:12 PM
Mr_Grimm13
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
25
Oct 2, 2013 09:46 AM
ADK_XJ
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
8
Apr 12, 2013 08:49 PM
Cole Trickle
Modified XJ Cherokee Tech
13
Jan 9, 2012 04:42 PM
parker05_05
Stock Grand Cherokee Tech. All ZJ/WJ/WK Non-modified/stock questions go here!
15
Jul 28, 2011 08:43 PM
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)