JoJoDaKilla
NAXJA Forum User
- Location
- Oak Ridge, TN
1990 Cherokee Laredo Automatic 4x4
I pretty much just realized after all this time my TC is not locking up. At 65 it runs 2.5k rpm's. Should be around 1800. I replaced the TPS, IAC, Valve cover gasket, Intake/Exhaust manifold gasket. I know some have nothing to do with the shifting or TC. I also adjusted the TV cable. I unplugged the TCU which isn't going to fix anything because it eliminates TC lock up. I checked the brake light switch, NSS is fine, even checked something most people forget about which is the white box above the brake light switch that has a plunger on it. Now
It's not all the way back in the plunger, but I think far enough in. I know this problem has to be electrical because when it was floored the rpm's would drop. I've posted a few times about this but now I've tried everything people have said to look for. Also it shifts at 2300 rpm's not matter if it's floored. It always does and only way to get past that was unplug the tcu. I really really need to figure this out. I'm pretty sure the TC is good because it shifts perfect into all 4 gears. No hesitation into gears or hard shifts. I'm just really stumped and the only thing I can think of next is the manual switch for lock up which I really don't want to do because my gf had to drive this sometimes for the extra room. Please any help would be appreciated.
I pretty much just realized after all this time my TC is not locking up. At 65 it runs 2.5k rpm's. Should be around 1800. I replaced the TPS, IAC, Valve cover gasket, Intake/Exhaust manifold gasket. I know some have nothing to do with the shifting or TC. I also adjusted the TV cable. I unplugged the TCU which isn't going to fix anything because it eliminates TC lock up. I checked the brake light switch, NSS is fine, even checked something most people forget about which is the white box above the brake light switch that has a plunger on it. Now
It's not all the way back in the plunger, but I think far enough in. I know this problem has to be electrical because when it was floored the rpm's would drop. I've posted a few times about this but now I've tried everything people have said to look for. Also it shifts at 2300 rpm's not matter if it's floored. It always does and only way to get past that was unplug the tcu. I really really need to figure this out. I'm pretty sure the TC is good because it shifts perfect into all 4 gears. No hesitation into gears or hard shifts. I'm just really stumped and the only thing I can think of next is the manual switch for lock up which I really don't want to do because my gf had to drive this sometimes for the extra room. Please any help would be appreciated.