94 Caravan Transmission Failure

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I have a 94 grand caravan and the trans has decided to not shift anymore. It is the 4 speed automatic behind a 3.0L. It feels like it is starting out in second and stays there. No up shifts or down shifts. It recently had the passenger side half shaft replaced. Trans fluid level is good. Where do I start to diagnose this issue?

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sounds like it is in the "limp" mode and may be a module or electronic issue. My '91 would do this and sometimes just disconnecting the battery would get it to (??) reset or something Have it scanned like suggested. (btw it too felt like it was in 2nd gear and would stay there and never shift just like you described......the "limp mode"


MikeR

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"limp mode"

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This is what I was thinking. When our 2000 did this it was just the speed sensor. There is a high and low speed snsor that tells it to shift. Replaced both and no problems since. 4 years gone by now.

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"limp mode"

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This is what I was thinking. When our 2000 did this it was just the speed sensor. There is a high and low speed snsor that tells it to shift. Replaced both and no problems since. 4 years gone by now.

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Speed sensor sounds like this may be the cause.....and not that this would be an issue or a way of it going into the limp mode by the OP but I could get it to go into the limp mode by spinning the (front) wheels in slippery conditions like SNOW when I first started the car and the trans hadn't shifted yet. If it stayed in 2nd gear/limp mode then I'd have to shut the engine off and reset it, not spin the wheels until it shifted on its own.


MikeR

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Point is ?

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IS .. the cost of all this !

I can uNderstand the need for all the E for the engine ... but the trans ? ....

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Costs are irrelavent.
Advancements in engine technology is no different than advancements in transmission technology.

99% of it is to lower emissions - improve fuel mileage.
nothing more - nothing less.

No offense meant, but throwing parts at anything in an attempt it 'might' fix it,, is ( to me) a huge waste of time ,effort and money.

My point is, diagnosis is key. AND if used properly IS your friend.


I've done A604 based trans work for the better part of the last 15-20 years.
input / output speed sensors fixed maybe 20-30% of shift issues

I do understand, theyre cheap( but they are not free ) And now what could have been maybe $85 for an hours worth if diag time is now going to cost $125( based on my local dealers $85 an hour labor rate)

IMO one hours worth of diag time from someone with the equipment and knows how to use it is money well spent .



Merry Christmas to all

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Point is ?

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IS .. the cost of all this !

I can uNderstand the need for all the E for the engine ... but the trans ? ....

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Doc, go park your dinosaur and move into the 21 century...
injection really does work also

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Point is ?

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IS .. the cost of all this !

I can uNderstand the need for all the E for the engine ... but the trans ? ....

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Doc, go park your dinosaur and move into the 21 century...
injection really does work also

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But Mike, he loves his Thermoquads. He's even got one on his lawnmower.

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Point is ?

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IS .. the cost of all this !

I can uNderstand the need for all the E for the engine ... but the trans ? ....

---

Doc, go park your dinosaur and move into the 21 century...
injection really does work also

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But Mike, he loves his Thermoquads. He's even got one on his lawnmower.

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Whata' buncha' ....

P-guy .... LET'S see that FI and E-trans on your P-car !!

and 'zilla .... YOU are YURR /6 ...talk about YESTERtech ...

Even I have a V-6 !