Burnout84

ok over this weekend I converted my 88 xj to the looped cooling system. I changed out the thermostat housing to the one with the sensor in it, replaced my heater core, and completely deleted the pressure bottle. I also replaced both sides of my vaccuum harness and both of the lines off of my charcoal canister. after getting everything back together last night my tranny will only shift at redline. the only way I have been able to drive it is to unplug the Tranny Control Module (TCM) and manually shift it through the gears. I have no idea where to start on this problem. Any help is greatly appriciated.

Thanks in advence.

thundaluvin

Sounds like a solenoid issue. Could very well be you have something hooked up backwards as far as the vacuum lines go, but I'm leaning more towards a solenoid issue.

Captain_America

Its the throttle position sensor (TPS) Change and adjust and you'll be good to go.

freegdr

did you knock any wires or connectors loose ,put vacuum system back to the way it was see if it works correctly

freegdr

http://www.lunghd.com/Tech_Articles/...tification.htm no 13 tcm fuse

Burnout84

fuze was good tried a new one any way and no luck checked the tps plugs and all look good. the tranny had a problem before but it would only shift at low rpm and not down shift now it's opposite...

freegdr

ever adjust the kick down cable

widefieldcherokee

Vaccum hose to the tranny
had the same issue a while ago wit an 86 bronco ll

freegdr

mine standard shift does the aw4 have one

Burnout84

i have never touched the kickdown cable

not sure where the vaccuum line is.

not sure

Captain_America

We have the same year XJ Burnout...

There is no vacuum line to the transmission.

Check the voltage to the TPS. I just had to do this to mine. Same symptoms.

http://autorepair.about.com/library/faqs/bl232i.htm

mrfajita

Also check the kickdown cable.

Burnout84

gonna try adjusting the TPS tonight when i get a circuit tester over here. i will let you know if it works. thanks for all the help.

tjwalker

TPS must be completely tested per procedure AND adjusted. The RENIX (87-90) TPS is adjustable and that is important.

Any question, replace it and be sure to adjust the new one as they will need adjustment out of the box.

It is critical to shifting characteristics of the transmission.

Burnout84

ok don't think i'm doin this right. do you have to start it in between adjustments?