overdrive light blinking

Reply Subscribe

Thread Tools

Search this Thread

Mar 16, 2023 | 11:44 AM

Tony Ricci

Thread Starter

Cross-Country

Joined: Mar 2017

Posts: 79

Likes: 1

overdrive light blinking

i gotta 96 f250 with a 7.5l gas 2 wheel drive truck...when i get on the freeway i get up to speed then my o\d light on my shifter starts to blink..if i kill the motor then restat it the light goes off..seems to happen when im doing a constant speed then slow down. any ideas...could it b a sensor or something worse. when it does go on..sometimes on the offramp when ive gotten off the freeway it shifts really hard into 2nd and 3rd gear

Last edited by Tony Ricci; Mar 16, 2023 at 11:47 AM. Reason: forgot info

Mar 16, 2023 | 12:57 PM

rla2005

Fleet Owner

Joined: Oct 2005

Posts: 20,789

Likes: 1,753

From: Kentucky

Run the Key On Engine Off (KOEO) tests and Stored Code display.

Here is how to read OBD-I codes: www.troublecodes.net/ford

If your truck is OBD-II you will need a code reader.

Mar 16, 2023 | 08:36 PM

Tony Ricci

Thread Starter

Cross-Country

Joined: Mar 2017

Posts: 79

Likes: 1

Overdrive light

It is obd..I do have a cheap reader but check engine light is not on...would the koeo codes be or do anything different then obd ?

Mar 16, 2023 | 08:40 PM

Mo8414

Mountain Pass

Joined: Dec 2018

Posts: 129

Likes: 11

Even with no check engine light there can be codes. Last time my OD light was blinking my computer was fried but it ran terrible and was consistent so likely not your issue.

Mar 16, 2023 | 09:30 PM

Mark Kovalsky

Frmr Ford Trans Engr

Joined: Aug 1999

Posts: 24,731

Likes: 2,658

From: SE Florida

You are going to need to read the codes to fix this. To read the codes you need to determine if the truck is OBDI or OBDII. Saying it is OBD is meaningless.

If there is a connector under the driver's side dash to read the codes it is OBDII. If the connector is under the hood it is OBDI. www.troublecodes.net/ford can help you find the connector.