FIPL, E4OD TRANS, SHIFT, FRIKK!!!!

Daryl4 said:

I and other professionals disagree. There's absolutely a thing we may call information overload. Whether done on purpose or not when pertinent information is included with other unimportant data it's less likely to be understood, absorbed, and utilized. In the long run you're correct but in the short term it's more harmful then helpful.

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CaptTom said:

Good gouge!!

I forgot to mention, the tach will drop to zero every once in awhile when I take my foot off the throttle..... which freaked me out the first time it happened. Truck still running normal even when tach drops off the grid. It only happens driving in town as I pump for fuel in traffic, never at constant speed. I thought it might be the tach sensor at the IP gear housing, I've replaced it twice in five years, but the tach typically bounces erratically and thought nothing of it. The zero drop has only occurred a few times over last month or so.

Speedo appears to work great.

No OD lights flashing on or off. Tested OD switch and it appears to function.

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CaptTom said:

Thanks Trackspeeder!

I'm leaning to your assessment as it "seems" more electrical than mechanical. I don't remember trans issues last two times I changed out my tach sensor for a bouncy needle.


Although the sticking valves seems very plausible but an unpleasantry I'm trying to avoid... closing my eyes to it for the moment!! Before digging into it if the tachie doesn't solve the problem, I'm going to have a flush done. Realize I am in no way a trans guy, so it will have to go to a shop for anything involving the guts in this thing.... I can rebuild engines, but trans are too much wizardry for me!!

Do the obvious and simple stuff first. Obviously the tach sensor is going, although intermittent at the tach, and makes no sense at the trans, it has to be done, so it really isn't just throwing parts at it.

I'm all eyeballs for other ideas, and greatly appreciate all of your inputs!!

THX

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Big Daddy John said:

I can assure you, if your tach is screwy it will affect how this trans shifts. I’ve got two 93s. My DD has the zf5 and the tach has been intermittent for years. So when I bought the last 93 earlier this year I decided I’d swap the sensors to confirm or eliminate that as a problem. The new truck has the E4od and tach worked good! But when swapped the sensors, the tach problem swapped with trucks with it! And E4od trans did some crazy stuff! I didn’t drive it but just a couple miles, but it was shifting so irratically I thought something was surely gonna fall out from under the truck!

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SebastIDIan said:

Guys, this thread is over a year old

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