sailone32003 Posted May 11, 2015 Share Posted May 11, 2015 Hi everyone i have looked but haven't come across this anyplace so please forgive me if it has come up, While driving home @ 65mph my pathy shifted out of overdrive, when I got off the highway and could slow down if I left her in Dr she would shift out off gear if I down shifted to second she would go in gear but not downshift when completely stopped, if I put her in first she would downshift. When taking off in first then shifting to second she would shift once if I shift up to third nothing it seems if have second and third and have lost first and overdrive any help would be greatly appreciated. Sorry I was so long winded but wanted to give as much info as possible, Thanks again Paul Link to comment Share on other sites More sharing options...
sailone32003 Posted May 11, 2015 Author Share Posted May 11, 2015 OK update after she sat and cooled off for a bit I went out and drove her and she shifted fine. WTH Link to comment Share on other sites More sharing options...
k9sar Posted May 11, 2015 Share Posted May 11, 2015 don't suppose you have a tranny cooler installed, do you? Have you checked for any codes from the trans control module? Link to comment Share on other sites More sharing options...
sailone32003 Posted May 11, 2015 Author Share Posted May 11, 2015 No cooler installed. Going to drain and flush tomorrow and check if radiator is clogged. No haven't checked codes. Is the control module the same as the engine? Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
JackStraw1 Posted May 11, 2015 Share Posted May 11, 2015 (edited) It sounds like you may have issues related to transmission overheating. Overheating of the transmission is a well known issue in the WD21's and the cause of many dead transmissions Transmission cooler is one of the "must do" mods on the WD21 imo. I have the same year truck as you do. Had similar transmission problems. Ended up getting the transmission rebuilt many many years ago ($$) and installed transmission cooler. Haven't had a problem since. Edited May 11, 2015 by JackStraw1 Link to comment Share on other sites More sharing options...
Slartibartfast Posted May 12, 2015 Share Posted May 12, 2015 There's a procedure for checking trans codes in the FSM, you basically match the flashes of the light in the "power mode" switch to the tables in the book and figure out what it thinks is wrong. It's not the same as the engine computer. Link to comment Share on other sites More sharing options...
sailone32003 Posted May 13, 2015 Author Share Posted May 13, 2015 Up Date: First let me thank those of you That responded. Yesterday did the self flush as per 88pathoffroad has posted elsewhere. Replace fluid with Max Life and all seems fine, 202000 miles on original trans and still going, love this vehicle. 1 Link to comment Share on other sites More sharing options...
JackStraw1 Posted May 13, 2015 Share Posted May 13, 2015 Glad to hear you got er back going. I still would strongly urge you to do the trans cooler, esp if that radiator is original. They have really come down in price and its an easy and quick bit of transmission protection. Link to comment Share on other sites More sharing options...
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