Flashing OD light

[johnsiddle]

Hi Guy's
Just to add to my error 14 problems, the day before yesterday my OD Off light started flashing.
It started after the engine had warmed up and went on all day.

Stopping the engine cured it for about a mile when it started again.

Yesterday it started after about 15+ miles and continued until I got home.
Today it has been OK.

There is no reduction in power (except when my engine light comes on as well with the error 14 code that I am already chasing) and the overdrive continues to work.
I am not over bothered about it but was wondering if anyone knows what it means...

I am deffo going to look at electrifying this beast....
John

[BeratE]

Hi John,
I recently swapped my auto tranny out for a 5-speed. I also had the O/D Off light flashing and found that it would go away if I plugged the transmission oil temperature sensor back into the wiring loom. Probably not your issue, but I'd say it's worth checking on the temp sensor. It is located on one of the tranny oil cooler lines. At room temperature, mine had a resistance of 8.5 kOhm.

I believe that I recall reading that it will flash if the fluid level is too low as well.

Good luck

[johnsiddle]

Thanks mate, I will check that.
I was wondering about the oil level but assumed it would show up with some other light, low transmission oil would make sense.

Haven't got around to stripping my injector pump down as yet, its gone a bit too cold for working outside, still it is summer in UK after al, what else can you expect.
john

[BeratE]

John,
I have sad news to report. What I initially told you was incorrect. I went for a spin in the truck with the tranny oil temp sensor in place and wound up with the O/D Off light flashing, so I have yet to find out exactly what is triggering mine. The hunt continues...

[johnsiddle]

John,
I have sad news to report. What I initially told you was incorrect. I went for a spin in the truck with the tranny oil temp sensor in place and wound up with the O/D Off light flashing, so I have yet to find out exactly what is triggering mine. The hunt continues...

OK.
I checked the fluid today but it was halfway between the marks (hot) so I guess it is OK.

I had a similar fault two years ago but the engine failed just after the fault came on and that was cured by a replacement ECU, I tried the ECU back in about a year ago and the fault was still there.
Maybe it is a common ECU fault, I have another so I might try that one and see if it is an ecu fault.

If it was a common fault I would have expected a bigger response on the forum tho.

Will keep you informed

John