Overdrive Light Blinking????
still plays with trucks
Joined: Mar 2004
Posts: 1,743
Likes: 3
From: Twin Falls Idaho
your transmission computer is sensing a slip. If it senses a slip between shifts it will set a code and send the tranny into "limp in" mode. this will cause the OD light to flash and change the shift points slightly. Barney
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,730
Likes: 2,658
From: SE Florida
There's a good chance it is a slip code causing the OD light to flash, but it could be any of about 50 other things. When the light flashes a code is stored in the computer's memory. The only way to know what's wrong is to have the codes read.
Hook it, I'll pull it.
Joined: May 2007
Posts: 15,037
Likes: 4
From: Grand Lake, La.
If you overheat your tranny the od light will blink. Check and smell your fluid to make sure it is not low, burnt looking, burnt smelling. Can you feel it slipping? I guess you don't have gauges, that would tell you if it is getting hot.
Cargo Master
Joined: Jun 2003
Posts: 3,292
Likes: 6
From: Ardenvoir, Washington
Welcome to the forum. The next thing that will be fried is your trans if you are not monitoring the temps..I get nervous of temps over 210*. Another cause for the blinking light is the VSS sensor on top of your rear end.. Mine was bad last year and i replaced it with a Napa p/n 530780 (napa calls it a ABS sensor).. easy to install... $10.49
Elder User
Joined: Aug 2007
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From: South-Central Kentucky
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Junior User
Joined: Jun 2003
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From: West Jordan, Utah
About a day after my light started blinking my truck had a real hard time shifting from 2nd to 3rd. had the code read and sure enough it was slipping. Oil smelt burnt and was real dirty. I was pulling a trailer up in the mtns when the light started blinking.....
Had the oil changed and so far it is running ok....
Had the oil changed and so far it is running ok....
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New User
Joined: Jan 2008
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I'm new to this forum and I had my overdrive light blinking along with the speedo falling off to 0 mph. Transmission was cold and after 2 or 3 min. it stopped blinking and the mph started working again. Haven't had this happen again. Any comments?
Posting Guru
Joined: Oct 2007
Posts: 2,225
Likes: 1
From: Farmington, Minnesota
Originally Posted by Slug
I'm new to this forum and I had my overdrive light blinking along with the speedo falling off to 0 mph. Transmission was cold and after 2 or 3 min. it stopped blinking and the mph started working again. Haven't had this happen again. Any comments?
Hook it, I'll pull it.
Joined: May 2007
Posts: 15,037
Likes: 4
From: Grand Lake, La.
Originally Posted by kjswensen
About a day after my light started blinking my truck had a real hard time shifting from 2nd to 3rd. had the code read and sure enough it was slipping. Oil smelt burnt and was real dirty. I was pulling a trailer up in the mtns when the light started blinking.....
Had the oil changed and so far it is running ok....
Had the oil changed and so far it is running ok....
Welcome to FTE.
Last edited by miller_feed; Jan 30, 2008 at 08:35 AM.
Hook it, I'll pull it.
Joined: May 2007
Posts: 15,037
Likes: 4
From: Grand Lake, La.
Originally Posted by Slug
I'm new to this forum and I had my overdrive light blinking along with the speedo falling off to 0 mph. Transmission was cold and after 2 or 3 min. it stopped blinking and the mph started working again. Haven't had this happen again. Any comments?
Smokin
Joined: Jun 2006
Posts: 8,849
Likes: 0
Originally Posted by miller_feed
If your truck is an 01", you need a trans rebuild. The symptems of the diode going out.
Welcome to FTE.
Welcome to FTE.
Hook it, I'll pull it.
Joined: May 2007
Posts: 15,037
Likes: 4
From: Grand Lake, La.
Originally Posted by Smokin'
Why only the 01? I'm wondering what the difference was between the '01, and the 99, 00, 02, 03, etc?
They did through mid 01', then changed to something else. Like you see here I don't know JACK CRAP about this, I just know I have that in mine. I have not had any problems with mine, but I think I will later the way people talk. I'm sure I just screwd your mine up with this stupid stuff I just wrote, but thats what I know.
