Alternating Overdrive- on/off

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Dec 19, 2013 | 09:30 AM

#16

CCKen

CF Veteran

Joined: Aug 2010

Posts: 8,357

Likes: 103

From: Canton, MI

Year: 1999

Model: Cherokee

Engine: 4.0

Quote:

Originally Posted by Ianf406

Thanks guys Ill find out how to and check the brake today. I have a newish tps sensor(maybe a year old). The replacement of that had no effect on this issue. Thanks Anony for all the info. Definitely gives me more to look into. I might replace the TRS as well after checking the break.

The brake lamp switch is different for the '99 than the one shown in Cruiser54's pic. Yours is non-adjustable after initial installation.

The TCM for a '97 XJ won't work. In '98 a second transmission speed sensor was introduced so the TCM will be looking for the inputs from both the Input Speed Sensor and the Output Speed Sensor.

The TCM from a '98 thru '01 XJ will work. OEM part number 56041 386

Dec 19, 2013 | 09:38 AM

#17

CCKen

CF Veteran

Joined: Aug 2010

Posts: 8,357

Likes: 103

From: Canton, MI

Year: 1999

Model: Cherokee

Engine: 4.0

Here's a thread relating to testing TCM inputs related to DTC P0740, if you want to try these tests.

https://www.cherokeeforum.com/f2/074...delima-184923/

Last edited by CCKen; Dec 19, 2013 at 10:06 AM.

Dec 20, 2013 | 01:35 AM

#18

Ianf406

Thread Starter

CF Veteran

Joined: Feb 2010

Posts: 3,353

Likes: 1

From: Missoula, MT

Year: 1999

Model: Cherokee

Engine: Golen 4.6 Stroker, AFE Headers, 62mm TB, 24 LB Injectors, Brown Dog kit, HF Cat, 3" Exhaust

Thank you man! So if the brake is not adjustable I guess I'de either have to replace the whole thing or that is not the problem huh? and thanks for the link.