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Oct 2, 2005 | 03:45 PM

hmebuildr

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Trans question

Here is the run down I have a 97 F250HD 351 Auto tranny 188K for mileage. the tranny was serviced about 1000 miles ago. When I took it to the shop I was having issues with it. It felt like it was slipping like it would if you were slipping a clutch but only at very odd times. After many a test drive we could not get it to do the same thing nor did any codes come up. I had them do a oil and filter change and it ran great after that nothing to complain about. This morning the slipping came back and I noticed the OD light on the gear shift blinking. Blinked about 6 times and stopped tranny sounded like it was not in OD while I was driving it on the highway but it was not slipping. I cant for the life of me figure it out and I will be at the shop in the morning.

Any Ideas?

Oct 2, 2005 | 10:49 PM

BFR250SD

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From: Phenix City, AL

If it feels like it's slipping, it's most likely the torque converter. The only other thing is that it's time for a rebuild. I would start with the TC first.

Oct 4, 2005 | 09:44 AM

reevesg

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I am nowhere near enough qualified to comment as most of these guys. But when I had similar symptoms with the tranny when I needed to replace my VSS. I have also heard that a bad VSS will make the overdrive light blink.

It was more obvious that the VSS was my problem becuase the speedo, abs light and tranny all started acting up at the same time.

Gareth

Oct 4, 2005 | 09:12 PM

BFR250SD

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From: Phenix City, AL

With the VSS he should be getting eradic speedo readings as well. That is a usual symptom with it. The computer can't adjust for speed and throttle position, so it hunts and shifts hard and slips.

Are you getting weird speed readings or just the slippage?