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Chrysler Minivan Transmission Problems

1833 messages,  Last post on Nov 10, 2009 at 3:54 AM

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What is this discussion about? Chrysler Town and Country, Dodge Caravan, Plymouth Voyager, Chrysler Grand Voyager, Dodge Grand Caravan, Transmission, Van


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#1382 of 1833
2002 Voyager Auto Transmission by khz
Jul 24, 2007 (3:23 pm)
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I purchased a 2002 Voyager with 102,000 miles. When I purchase it was running great. Took it to have trans filter and fluids changed. Now the van seems to have problem when down shifting in the 25 - 30 mph range. Still runs good on highway. Problem only occurs when slowing down. The car bucks or seems to down shift real hard. Any suggestions?
#1383 of 1833
Re: 2002 Voyager Auto Transmission [khz] by shipo
Jul 24, 2007 (3:35 pm)
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Replying to: khz (Jul 24, 2007 3:23 pm)

A couple of thoughts:
 
1) Why did you have the fluid replaced? IIRC, the 2002 uses a lifetime fill of ATF+4 transmission fluid.
2) Who did the work on the transmission? Many places claim to have some magic elixir that will magically change Dextron transmission fluid into ATF+4. It won't. So, unless you took it to a dealer, you may well have the wrong fluid in the transmission.
 
Best Regards,
Shipo
#1384 of 1833
Re: 2002 Voyager Auto Transmission [shipo] by khz
Jul 24, 2007 (3:53 pm)
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Replying to: shipo (Jul 24, 2007 3:35 pm)

It was suggested that I have all the filters and fluids changed when I got the car. I take it to a local mechanic and he claims to have put the proper fluid in the van. Would the wrong fluid only effect when the car is down shifting for a certain gear? If I take it to a dealer and have the drain and refilled, do you think that would eliminate the problem?
 
Thanks for your assistance.
#1385 of 1833
Re: 2002 Voyager Auto Transmission [khz] by shipo
Jul 24, 2007 (5:34 pm)
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Replying to: khz (Jul 24, 2007 3:53 pm)

Without knowing what when in, it would be very difficult for me to speculate. Another thought is that when your local mechanic did the drain of the old fluid, the transmission control module sensed "loss of prime" and as such it needs to be reset. When you have the fluid replaced at a dealership the do that for you automatically.
 
I suppose the first thing I would do in your shoes would be to get your mechanic to spell out exactly what the "Proper fluid" is for your transmission. If he says anything other than Mopar ATF+4, then you have a problem. If he does give you the correct answer, go to a dealership and pay them to reset the TCM. That may or may not solve your problem.
 
Keep us posted.
 
Best Regards,
Shipo
#1386 of 1833
Re: 2002 Voyager Auto Transmission [shipo] by khz
Jul 25, 2007 (7:38 am)
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Replying to: shipo (Jul 24, 2007 5:34 pm)

Thanks again for the assistance. I took the van to a dealer this morning and had all the fluids changed again. It still bucks at the 25-30 mph downshift. The dealer may feel it is a valve being stuck from debri. Couldn't tell unless they took apart. They wouldn't give me an indication if I run as is what could happen. What do people think about letting it go until it dies or if it is debri it would loosen? How much damage do you think it could do?
 
Thanks again for all the comments.
#1387 of 1833
Re: 2002 Voyager Auto Transmission [khz] by shipo
Jul 25, 2007 (8:07 am)
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Replying to: khz (Jul 25, 2007 7:38 am)

At this point I'd say "Driv'er till she drops." I put a new transmission in our 1998 (different generation of transmission and not as robust as the one in your van) last year when it had only 109,000 miles on it and felt it was a worthy investment. Good choice a it turns out. Another car would have cost me considerably more than the cost of the transmission, and now with nearly 150,000 miles on it, it still runs like a top.
 
Best Regards,
Shipo
#1388 of 1833
Re: 2002 Voyager Auto Transmission [shipo] by xwesx
Jul 25, 2007 (9:26 am)
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Replying to: shipo (Jul 25, 2007 8:07 am)

Yep - if you have to tear into the transmission, might as well make it worth the effort! Ripping it apart probably will not cost much less than replacing it.
 
Just be aware that it might (and probably will, at some point) leave you stranded, so be prepared for that and take it as it comes.
 
I find it hard to swallow that it just "appeared" after a service, but stranger things have happened.
#1389 of 1833
Re: 2002 Voyager Auto Transmission [xwesx] by khz
Jul 25, 2007 (12:27 pm)
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Replying to: xwesx (Jul 25, 2007 9:26 am)

That's what is making so hard to understand. I drove the van and not any indication. Change the filter and fluids and it starts. Most likely it will leave me standed. Any experience as to how long? I know it is hard because you don't know how it feels to drive. Figure ask around.
 
Does the debri, sound accurate? I'm not that familiar with tranmissions.
 
Thanks,
#1390 of 1833
Re: 2000 Grand Caravan downshift 2-1 "clunk" [napagirl] by khz
Jul 25, 2007 (12:35 pm)
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Replying to: napagirl (Jul 21, 2007 10:41 pm)

I have a 2002 Voyager that sounds like it is doing the same. It happens when I'm slowing down in the 25 -30 mph range it would clunk. It started after I had the filter and fluids changed in tranny. Like yourself, I'm not experienced in transmission work. The response that I get from service stations is, "it could be a stuck valve". Won't know until we take it apart. Of course if not, "it could be a gear". None would give a definite answer or price. GOOD LUCK. Let me know what they discover. Thanks
#1391 of 1833
Re: 2002 Voyager Auto Transmission [khz] by xwesx
Jul 25, 2007 (1:15 pm)
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Replying to: khz (Jul 25, 2007 12:27 pm)

Well, the debris theory is not satisfactory to me. But then, I do not have much experience tearing into transmissions. Automatic transmissions work through hydraulic pressure, so something sticking would make more sense. Basically, if there is a rough shift, the most likely cause is the system is not reacting to normal engine inputs. The transmission wants to shift, but requires higher than normal RPMs from the engine in order to accomplish the task. You press the gas harder to get the van to move faster, and eventually the pressure builds up strong enough to force the mechanical movement and the gear shifts down.
 
What is causing the "sticking" though? Is it debris? Friction? Improper fluid? Tough to say, but I would think debris would be the least likely problem, as that would tend to cause a blockage altogether or would at least be less consistent than the other two. But, debris and/or friction could be addressed by flushing the transmission with a solvent. A shop would actually have to hook the vehicle up to a machine that cycles the fluid through to replace all the current fluid, clean the internal components of the transmission, and then install all new fluid. Not sure how much it would cost, but I would guess perhaps $500. No guarantee, of course, that it would fix the problem.
 
If it is the fluid causing the problem then get it out as soon as possible!
 
As for when it might strand you.... anyone's guess. It all depends on what is wrong and how much damage it is causing. It will probably get worse before it gives up altogether, though.

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