O/D off

JESSYO3264

MEMBER
2004 JEEP GRAND CHEROKEE LAREDO
4.7L
V8
TURBO
AUTOMATIC
197,699 MILES

My vehicle has a light on the dashboard that says O/D off. The issue is I do not know whether to drive with this on or off. Can you explain please.

Saturday, February 24th, 2018 AT 5:44 PM

5 Replies

KEN L

MASTER CERTIFIED MECHANIC
47,536 POSTS

Yes, you should have a small button or switch that controls whether you want overdrive or not. It should be on the shift handle or dash. Can you check it out and let me know?

Cheers, Ken

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Monday, February 26th, 2018 AT 2:38 PM

JESSYO3264

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15 POSTS

It is on the gear shifter. It is an automatic.

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Monday, February 26th, 2018 AT 3:29 PM

KEN L

MASTER CERTIFIED MECHANIC
47,536 POSTS

Does the light respond to the switch or is the light blinking or you cant switch the OD on? Sorry for the twenty questions just need to know :)

Cheers, Ken

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Tuesday, February 27th, 2018 AT 2:33 PM

JESSYO3264

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15 POSTS

The 20 questions are absolutely fine. I actually have so many questions because there's so many issues wrong with the Jeep. If you don't mind I'm just going to ask you all of them but when I press the button a light comes on that says O/d off. Also my Jeep is smoking, I've changed the spark plugs, wires, and valve cover gaskets. But it's still smoking, but NOT overheating.

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Tuesday, February 27th, 2018 AT 3:59 PM

KEN L

MASTER CERTIFIED MECHANIC
47,536 POSTS

Okay that is better, lets handle one problem at a time you will need to start new threads for the other issues. We are after the overdrive problem first.

It sounds like you have input speed sensor for the transmission that is out but to be sure lets run the codes to see what comes up.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Please run down this guide and report back

Cheers, Ken