It's actually putting itself into second gear. Chrysler A-604 transmissions are an electronically controlled transmission which use speed sensor to see things like vehicle speed, engine rpm, throttle position and internal transmission component speeds. It can determine if there is an issue with the transmission based on these sensors and when it does it tells the transmission to go into "limp mode" which is basically just second gear. This would allow the driver to move off the highway to the side of the road or drive it slowly for a while to a service facility. To determine the exact issue with the transmission you need to go to a shop that can read the transmission codes and decipher whether the transmission can be repaired in the vehicle or must be removed and rebuilt. It is common to have a sensor fail and cause this issue which means a reasonably low cost repair. It is also common for the trans to need complete overhaul. It IS worth it to go to a "qualified" transmission repair garage though so it can be properly diagnosed.
Good luck and hope this helps.
P.S. Did you check the fluid level first, idling in park? Had to ask.
SOURCE: hard down shift
I've read article after article on Chrysler forums where anything other than Autopar ATF in their transmissions cause problems, erratic shifting, etc, including what your experiencing. The techs that deal with it daily through Chrysler/Dodge shops, say there is some properties or chemicals in Autopar fluid, that others just don't have, no matter what they say, and they have proven it, time after time, with symptoms that disappear, just by changing fluids to Autopar. My wife's relatives own one of the more respected & trusted repair shops in our area, and they swear by that rule too, because they've also experienced it in the past. I'm naturally assuming you know that your experienced enough to know how to install filter properly & what to watch for, so with that said, I hate to say it, but Mopar ATF4 is the one & only fluid for best results. P.S. I recently had my transmission with 260,000km. replaced at Ontario Reman, whom back when I was with Chrysler, was the sole supplier of rebuilt engines & transmissions for Chrysler. When I questioned them on the fluid in my new/rebuild they responded with same answer, Mopar ATF and nothing else. If you do some googling on it, you'll find many that went to quick lube or similar for same service only to experience shifting problems etc after. Switched back to autopar as advised & problems went away. Can't say 100% that's your problem, but if it were me, I'd change it.
SOURCE: 1991 Dodge Caravan - Transmission problems
BELIVE ME THIS HAPPENED TO ME AND IT WAS BECAUSE MY OIL WAS LOW CAUSING THE ENGINE TO REV HIGHER TO MAINTAIN SPEED.DO YOUR SELF A FAVOR AND CHECK (ALL) THE FLUIDS IN YOUR VAN 1'ST.HOPE THIS HELPS
SOURCE: 2005 Dodge Grand Caravan spare tire won't come
Raise it back up, the cable has a small end that must go up into the bracket to release the lock. With the weight of the tire on the cable the lock will release. You may need to kick the tire a few times to make sure it is hanging and not stuck. When it comes down, you'll se how it works (really dumb design) I had one where after lowering the tire to check the pressure, it would not go all the way back up. There is a grooved pulley that pulls the cable up, and if the cable jumps a groove, it will not pull the tire all the way up. The only way I got it back up was to cut a window on the side of the housing and reset the cable and wound it back 1/2 way.
SOURCE: my 1996 grand caravan will go in gear but wont
I am looking for a diagram that shows were the speed sensor is located on the transmission.Of a 96 Grand Caravan.
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