1999 Jeep Cherokee check engine light

ALLENDSMITH

MEMBER
1999 JEEP CHEROKEE
6 CYL
4WD
AUTOMATIC
119,133 MILES

Last week my check engine light came on. Now my transmission does not shift right from 1st to 2nd gear. I did a diagnostic and it came back with an error code of p0720. The error points back to a transmission speed control sensor. I purchased a sensor ( MFG# S41015) but cannot locate where it goes on my transmission. All the diagrams that I have looked at do not resemble my transmission what so ever. Did jeep use different types of transmissions? Is there a simple fix to clear the code and get my jeep running right?

thanks,

Allen

5 Replies

MHPAUTOS

MECHANIC
31,938 POSTS

Hi there,

Which model Cherokee do you have?

Mark (mhpautos)

Was this

answer

helpful?

Yes

No

+1

Sunday, May 30th, 2010 AT 8:15 AM

ALLENDSMITH

MEMBER
3 POSTS

Hi,

Its a 99 Jeep rand Cherokee. I tried to find some info on wat type of engne an transmission but have no luck. I have bee to caning the sensor is easier thanchanging a tire. At last I know where to find the tires. Any info will help greatly. Ihave bookmake your ste because I am sure I will be back.

Allen

SPONSORED LINKS

Was this

answer

helpful?

Yes

No

Sunday, May 30th, 2010 AT 1:41 PM

MHPAUTOS

MECHANIC
31,938 POSTS

Is this a help?

mark (mhpautos)

Was this

answer

helpful?

Yes

No

+1

Sunday, May 30th, 2010 AT 8:15 PM

ALLENDSMITH

MEMBER
3 POSTS

Problem solved! I purchased the output speed sensor from a jeep dealership part #4800879, Mopar. The part cost 23.30 plus tax. It took me about 10 minute to install without any special tools. I kept the battery disconnected for about 20 mintes to clear any codes. The check engine light is gone and the jeep shifts like it was brand new. I might go ahead and replace the input sensor to see if gas mileage improves even more. Thanks for the assist and please pass the info on.

Allen

Was this

answer

helpful?

Yes

No

+1

Tuesday, June 1st, 2010 AT 4:24 PM

MHPAUTOS