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#1609 of 2067 1991 tranny fluid
May 27, 2008 (8:29 pm)
i recently bought a 91 plymouth voyager le allwheel drive with 134k it runs good and the transmission( 4 speed auto) is fine i have no idea if its been rebuilt or not,the fluid seems to be in good shape a nice red color but i was wanting to change the transmission filter,,,now here is the thing does it take dextron or the atf+4? what about an additive??or maybe should i just leave it alone being that its working ok???
#1610 of 2067 Re: 1991 tranny fluid [rogyord]
May 28, 2008 (7:20 am)
You need to use only Chrysler transmission fluid that is recommended for that vehicle. There have been numerous cases of catastrophic transmission failure because non-Chrysler fluid was used for the fluid change. Good luck.
May 28, 2008 (8:12 am)
if your going to change the filter and gasket make sure you scrap the old gasket off ,dont nick into the metal just enough too get all the old loose crummy stuff of then put your new asket one (dont use any atv sealant just the gasket) using bothe defeats the purpose you can use a little in each corner to hold the gasket on the pan after putting the filter and new o ring on hand tighten all of the bolts to a snug and i mean snug fitting over tighting makes it worse if your fluid is red it should be fine to reuse but id recommend using new fluid atf+4 when filling your tranny up as its ideling crawl underneath of course it will leak a little because at this point this is when you need to completly tight/tourgue the bolts again do not overtighten just tighten your bolts now to where the gasket is sealing. after all is said and done here hop in and move your gear selector thru each gear at least 30 seconds to a minute thru each gear especially reverse when you have moved the selector thru all gears put in reverse dont give it any gas let it go in reverse ideling then put in drive and take it out for a drive dont dog it just enough to get the fluids thru the tranny. after about 20 miles get out and check your level if your a little low this is normal means all the fluid is in the convertor refill and you shold be good to go i own a 96 3.3ltr v6 with a 4 speed id also invest in the input and output sensors there very cheap and are very important to make sure are changed good luck wish i could find an all wheel drive. any other help let me know
#1612 of 2067 my lack of spelling
May 28, 2008 (8:13 am)
sorry for that i really am intelligent i was just typing really fast.
#1613 of 2067 Re: 91 tranny [joshockey]
May 28, 2008 (12:31 pm)
First off.. YOU ARE WRONG chrysler transmissions come from the factory with ONLY RTV sealant for pan gaskets and side covers and it is not recommended to use any form of gasket on this transmission pan. as they are prone to leaks. use only rtv sealant and a high quality sealant such as locktite 598 or 599 ultra grey... sorry to bust your chops. but the rest of yourr info is good about the input and output speed sensors.....
#1614 of 2067 Re: 91 tranny [joshockey]
May 28, 2008 (5:15 pm)
thanks for the info,,ok now where do i find these input and output sensors??? are they a dealer item or can i find them at the local auto parts store???
#1615 of 2067 Re: Hard shift at 30 mph [angnjas]
May 28, 2008 (9:26 pm)
If you search this forum for the problem, you will see that it's not uncommon, and usually occurs after a transmission fluid change. For some reason, the Transmission Control Module (TCM) senses a loss of prime in the transmission and the problem shows up. I have an 03 T&C and it was doing the same thing. Took it to local AAMCO and they cleared a "battery disconnect" code and then reset the TCM and the problem was solved. I would take yours somewhere to have the TCM reset before trying anything else.
#1616 of 2067 Re: 91 tranny [fordfan_17]
May 29, 2008 (5:56 am)
Sorry, but I've got to push back on this one. I've removed the RTV from any number of Chrysler vans (as part of a tranny oil and filter change), and have always used conventional gaskets when putting it back together. The truth is that I've yet to see a single aftermarket gasket leak, however, I just did a van a couple of days ago that had fluid leaking past the factory RTV gasket. My personal take on this is that I think evil thoughts directed toward the individual(s) that decided to use RTV whenever I'm faced with a pan drop on a transmission with a pan sealed with RTV.
#1617 of 2067 Re: 91 tranny [shipo]
May 29, 2008 (6:25 am)
to each his own. ive been rebuilding transmissions 28 years or so and attending seminars both factory and aftermarket atsg atra just to name a few and from the factory ALL front wheel drive transmissions that chrysler built ie: 404,413,470,670,604,606 all came from the factory with rtv sealant and the transmission overhaul kits DO NOT come with any type of pan gaskets. I wont argue with you about it one bit, these trans's need "quality" rtv on the pans and no pan gasket. thats the factory recommended setup, and thats the way I have been building these transmissions all of my life.
#1618 of 2067 Re: 91 tranny [rogyord]
May 29, 2008 (6:31 am)
i suggest for you to only use oem speed sensors since some of the aftermarket are of much less quality and theres only a cpl bucks difference in price dealership for these parts