Transmission problem on 2003 Voyager [Archive] - The Chrysler Minivan Fan Club Forums

: Transmission problem on 2003 Voyager



nealg58
07-31-2010, 08:29 PM
As Ray Stevens said "It's Me Again Margaret"! My wife drives a 2003 Chrysler Voyager - 3.3L engine. The past month or so the transmission has been intermittantly hard downshifting when slowing down to a stop. Back in April, she was driving it from Tennessee to Georgia and the speedometer dropped to 0 while going about 70. She slowed a bit and it returned to normal. It did this once more a week or so later but not since. She just called me and said that now the car will not go over 45 mph. When I pulled the codes, there were none. The two questions I have are this:

1: Will changing the transmission fluid and filter solve this? The car has about 126,000 miles on it.
2: I did a search and a few search hits came back with a PCM problem. (Ack expensive)

I await any suggestions.

Neal

AzTraveller
07-31-2010, 08:37 PM
The vehicle won't go over 45, because you're in "LIMP" mode (second gear). You can get home, off the highway, or to the dealer in limp mode, that is all it's designed for. You probably have a bad connection to one of the sensors. Get it SCANNED at your local tranny shop. NOT AAM**, unless you want it back in a doggy bag. Scanning is FREE. Get 2 opinions. Have you checked the fluid level ? Get back to us, BEFORE Doing anything ....

nealg58
07-31-2010, 08:45 PM
Not too many open on Sunday unfortunately. I checked the fluid a week or so ago and it was full cold and clear - not cloudy. Will the normal OBD connector show the codes? The OBD connector on this vehicle has connections for both the ISO-9141 AND J1850 VPW interfaces! I read somewhere that depending on which one is queryed first, will determine if you are talking to all the modules or just the main one.

Neal

AzTraveller
07-31-2010, 08:49 PM
You check the tranny fluid "HOT", engine is running, the tranny in PARK, not cold.

Only a tranny shop has the scanner to talk to the tranny control module (TCM), not a parts store. Get 2 opinions (FREE).
Get back to us .....

challenger
07-31-2010, 10:08 PM
As Ray Stevens said "It's Me Again Margaret"! My wife drives a 2003 Chrysler Voyager - 3.3L engine. The past month or so the transmission has been intermittantly hard downshifting when slowing down to a stop. Back in April, she was driving it from Tennessee to Georgia and the speedometer dropped to 0 while going about 70. She slowed a bit and it returned to normal. It did this once more a week or so later but not since. She just called me and said that now the car will not go over 45 mph. When I pulled the codes, there were none. The two questions I have are this:

1: Will changing the transmission fluid and filter solve this? The car has about 126,000 miles on it.
2: I did a search and a few search hits came back with a PCM problem. (Ack expensive)

I await any suggestions.

Neal

I would be strongly investigting a bad output speed sensor/circuitry. this sensor controls shifting and speedo. if the sensor/signal is bad, the trans will go to limp-in and read 0 on the speedo.

it is common to not get transmission codes when you're trying to get them out of the engine computer.

AzTraveller
07-31-2010, 10:16 PM
You check the tranny fluid "HOT", engine is running, the tranny in PARK, not cold.

Only a tranny shop has the scanner to talk to the tranny control module (TCM), not a parts store. Get 2 opinions (FREE).
Get back to us .....
Am I Talking to Myself or What ? :ask_wsign

challenger
07-31-2010, 10:19 PM
You check the tranny fluid "HOT", engine is running, the tranny in PARK, not cold.

Only a tranny shop has the scanner to talk to the tranny control module (TCM), not a parts store. Get 2 opinions (FREE).
Get back to us .....



Really ONLY a tranny shop? couldn't a general repair shop pull trans codes? in fact couldn't anyone with a quality scanner pull trans codes? I know I can with a $400 used snapon mt2500 I bought on ebay and I'm not at a tranny shop :ask_wsign

AzTraveller
08-01-2010, 03:23 AM
Really ONLY a tranny shop? couldn't a general repair shop pull trans codes? in fact couldn't anyone with a quality scanner pull trans codes? I know I can with a $400 used snapon mt2500 I bought on ebay and I'm not at a tranny shop :ask_wsign
Not every parts shop has the scanner that can pull those codes.
Not everyone can afford the scanner that can.
The tranny shops will pull the codes "FREE". We always recommend you get 2 different shops to pull codes, so you can compare the results, and you're sure they're not trying to "STIFF" you into unnecessary work.
If your scanner can, then please list the results HERE for us to review.

It is also recommended you check your fluid level "HOT" with the engine running, the tranny in "PARK", not cold, to get the correct level. Otherwise, if the engine is "OFF", the fluid level can flow back from the torque converter, into the pan and show an invalid level.

challenger
08-01-2010, 07:32 AM
who said anything about an autoparts store?


I swore I said general repair shop. The would be the guy on the corner that fixes cars (professionally).

infact, I'll bet any highschool auto shop could pull trans codes since most have a Snap on Solus, mt2500, Genisis or some other top quality scan tool.

IDK of any trans shop that would scan your trans for free, tell you it needs (x) part and not charge you a penny so you can go home and fix it yourself leaving them without the chance to make money to pay the bills and feed their kids.

andyg
08-01-2010, 12:24 PM
If there are no check engine lights, then the TCM has no code stored in it. When the TCM detects a fault, it sets the check engine light with a P0700 code.

What are the rpms at 45mph when it stops going? I know that my van will go much faster than 45mph in 2nd gear so it doesn't sound like limp mode.

If you floor the van from a stop, will it pull hard or die out in the upper rpm range?

challenger
08-01-2010, 07:57 PM
If there are no check engine lights, then the TCM has no code stored in it. When the TCM detects a fault, it sets the check engine light with a P0700 code.

What are the rpms at 45mph when it stops going? I know that my van will go much faster than 45mph in 2nd gear so it doesn't sound like limp mode.

If you floor the van from a stop, will it pull hard or die out in the upper rpm range?


not always and also depends if it's a 2 sequential trip to set code

AzTraveller
08-01-2010, 08:13 PM
Scanning your tranny will provide you with MORE THAN just codes, it provides you with wear status, as well as some history information. Read correctly, it in a limited fashion can tell a person / technician how the driver drives, based upon pressure levels tracked. We (on the Forum) are still learning about the "smarts" of these trannys. Tranny specialists / good mechanics should be able to correctly decipher this information. Others will use it to convince you, you need your tranny rebuilt, when in fact it may just be your driving habits need changing. An example of this is the occasional herd shift 3 - 4th gear. This has been found to be caused by aggressive acceleration from a stop light, then letting off last minute. The tranny programming "thinks" you're going to be accelerating through the 3 - 4 shift, as well, and provides expected pressure to ensure no slippage during that shift, however, you've just let off the pedal and are assuming it will "soft" shift, but it doesn't.

challenger
08-01-2010, 09:05 PM
I'm not learning anything new about them. I've mastered every aspect of their operation, contstruction, short commings and running changes. you are correct about the adaptive learning function with predicting shifting characteristics.

AzTraveller
08-01-2010, 09:07 PM
I'm not learning anything new about them. I've mastered every aspect of their operation, contstruction, short commings and running changes. you are correct about the adaptive learning function with predicting shifting characteristics.
Tends to catch some people off guard, doesn't it .........
:lol:

nealg58
08-04-2010, 09:42 PM
Still working on getting the TCM scanned. I did add about 16 ounces of ATF+4 since the fluid (hot & engine running) was at the lower end of the hot fluid level markings. It 'seems' to be shifting a little better. I am going to get a filter and change the filter and fluid this weekend. Oh and the CEL is not on and has not come on during any of the problems experienced.

nealg58
08-02-2011, 08:32 PM
Update and finalization of transmission problem. On the way to get the TCM scanned, the transmission died! Would not go into reverse. After calling several transmission shops for rebuild prices and sitting at home for a few months waiting on the tax refund to pay for the rebuild, the transmission was rebuilt for just over $1800. Thanks to all that assisted. Now to figure out how to get the cover off the radio console to replace the indicator lamps!

97K15004WD
08-03-2011, 08:37 AM
Thanks for the info. Looks like it lasted a little while longer....

reb2
08-07-2011, 10:56 AM
Hi,

I had the same problem with my 2002 T&C. I had gotten codes for free at autozone, bought both speed sensors. That didn't work. Next, I took van in "Limp Mode" to a Transmission repair shop said it would cost about $600 to replace TCM. I went to a local junk yard/ pull your own parts off place and asked for a Gen4 TCM. Found 1 and pulled if off myself. It is located behind the front left wheel shroud mounted on the frame directly under the battery. I turned the front wheels all the way to the left to get at the shroud, pulled the shroud back and exposed the TCM(transm. control module) 3 screws and unplugged the TCM harness. Replace the old one with the used one($20.00 cost at the junk yard). That worked! So, a $600 potential cost turned in to $20 and about 4 hours total doing research on the net and pulling off and replacing the TCM. Hope this helps.

kjbourne
10-24-2011, 07:44 AM
We had the same issue replaced the Transmission Control Module ( TCM ) and a few weeks later did it again. We found the alternator was shorting out and sending voltage down the line that was cause the symptoms. we replaced the alternator, all is fine now.

Symptoms:
Jerking when stopping, or when stopped (caused by the speedometer jumping a certain distance so the TCM though it was time to shift.