19comanche87 Posted October 11, 2009 Share Posted October 11, 2009 ok i have a 87 mj its the 4.0 4x4 A/T.........it shifts fine alot of the time but every once in a while when it gets warm i noticed that it starts to shift funny. it will shift later than usual, it revs higher b4 it shifts..... idk what it is....... i have a 71 elcamino that had a vacuum line that had a hole in it and it did the same thing but idk if my truck has one cuz i don't see a vacuum pod like on my elcamino.......any ideas what it could be...... Link to comment Share on other sites More sharing options...
aemsee Posted October 11, 2009 Share Posted October 11, 2009 could be a TPS or TPS connector problem Link to comment Share on other sites More sharing options...
Geonovast Posted October 11, 2009 Share Posted October 11, 2009 How's the fluid? You are right, there's no vacuum controls on the AW-4. It's controlled by its own computer. Do you have a power/comfort button? If so, is there any difference, between the settings? Link to comment Share on other sites More sharing options...
19comanche87 Posted October 11, 2009 Author Share Posted October 11, 2009 yea it does have a power/confort switch but i don't believe it works because i don't feel a difference when i switch it from power to comfort..... and the fluid is full... Link to comment Share on other sites More sharing options...
Lenard Posted October 11, 2009 Share Posted October 11, 2009 when i have mine in the comfort mode it kicks the rpms up between gears when its shifting. does the little light come on when you have it on power side? what color is the fluid? it should be reddish Link to comment Share on other sites More sharing options...
19comanche87 Posted October 11, 2009 Author Share Posted October 11, 2009 the fluid is reddish and the litte light doesnt come on Link to comment Share on other sites More sharing options...
Lenard Posted October 11, 2009 Share Posted October 11, 2009 ok i would check that first, pull it out of the dash make sure your getting power to the switch. the bulb could be burned out, but if your not noticing a difference than it prolly aint working. Link to comment Share on other sites More sharing options...
Eagle Posted October 11, 2009 Share Posted October 11, 2009 If you remove the fuse for the tranny controller, you are left with a transmission that you can shift manually ... with 1st, 3rd and 4th gears only (no 2nd). Try that, and see if it shifts cleanly when you move the lever from Lo to 3 to OD. If it shifts okay under manual control, the tranny should be okay and the problem is either the controller or the feedback from the TPS to the TCU. Link to comment Share on other sites More sharing options...
19comanche87 Posted October 11, 2009 Author Share Posted October 11, 2009 how does it pull outta the dash does it just pop out with a screwdriver. Link to comment Share on other sites More sharing options...
Eagle Posted October 11, 2009 Share Posted October 11, 2009 how does it pull outta the dash does it just pop out with a screwdriver. How does WHAT pull out? Are you referring to the fuse? It's in the fuse panel, which is UNDER the dashboard. You just grab it between the thumb and finger and pull it out. Link to comment Share on other sites More sharing options...
19comanche87 Posted October 11, 2009 Author Share Posted October 11, 2009 i know how to pull a fuse..... I'm talking about the power comfort switch Link to comment Share on other sites More sharing options...
Eagle Posted October 11, 2009 Share Posted October 11, 2009 i know how to pull a fuse..... I'm talking about the power comfort switch You have to remove the dash bezel. Behind that, the rectangular panel that the switch is in is held to the dashboard by three (IIRC) screws. Remove the screws to access the back of the panel and push the switch out. Link to comment Share on other sites More sharing options...
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