No power to the wheels, engine is revving fine.
Thread Starter
Seasoned Member
Joined: May 2009
Posts: 339
Likes: 4
Year: 1996
Model: Cherokee
Engine: 4.0L
OK, so checked the TPS very smoothly and carefully this time.
Using both, the voltmeter and the ohmeter. Same results so far, voltage rises up smoothly. and so does the resistance goes down smoothly. No open circuit, or constant voltage for some movement, smooth as silk! I need MOAARRR thingsss to checkk!! ideas, everyone? Fantic?
Oh and when I checked the voltage at the connector disconnected from the TPS, its was 5.14v. Is this giving out anything?
Using both, the voltmeter and the ohmeter. Same results so far, voltage rises up smoothly. and so does the resistance goes down smoothly. No open circuit, or constant voltage for some movement, smooth as silk! I need MOAARRR thingsss to checkk!! ideas, everyone? Fantic?
Oh and when I checked the voltage at the connector disconnected from the TPS, its was 5.14v. Is this giving out anything?
Last edited by syncview; Jul 11, 2009 at 03:29 PM.
CF Veteran
Joined: Jun 2009
Posts: 5,383
Likes: 5
Year: 1988 limited
Model: Cherokee
Engine: 4.0 litre
So what happened today:
When the exhaust was back on, i went out with the TCU unplugged, the tranny acted as per the manual. Only 1st in '1-2', only third in '3' and only fourth in 'D'. So that takes out the mechanical things, right? Coming back to electrics, I haven't had a chance to check the TPS again carefully, but I will within a few minutes. Is there any way to check the TCU?
HOWEVER: With the TCU plugged, it would shift in '1-2' to second gear at about 5000 revs. And I couldn't figure out what gear it was in '3' or 'D', its supposed to start from 1st gear in 3 and D, but it doesnt, its either 3rd or 4th, its not the second gear I'm sure. When ever im in 2nd gear, I shift it to '3', RPMs go down considerably and its looks like 4th gear puts on.
When the exhaust was back on, i went out with the TCU unplugged, the tranny acted as per the manual. Only 1st in '1-2', only third in '3' and only fourth in 'D'. So that takes out the mechanical things, right? Coming back to electrics, I haven't had a chance to check the TPS again carefully, but I will within a few minutes. Is there any way to check the TCU?
HOWEVER: With the TCU plugged, it would shift in '1-2' to second gear at about 5000 revs. And I couldn't figure out what gear it was in '3' or 'D', its supposed to start from 1st gear in 3 and D, but it doesnt, its either 3rd or 4th, its not the second gear I'm sure. When ever im in 2nd gear, I shift it to '3', RPMs go down considerably and its looks like 4th gear puts on.
What u can do before getting another TCU is checking the NSS and the speed sensor.
Test NSS continuity with an ohmeter. Disconnect the harness and test the connector terminal on the NSS.
Continuity should exist between terminals B and C with the tranny in P and N only.
Continuity should exist between terminals A and E with the tranny in R only
Continuity should exist between terminals A and G with the tranny in 3 only
Continuity should exist between terminals A and H with the tranny in 1-2 only.
No continuity should exist in D.
Good luck!
Thread Starter
Seasoned Member
Joined: May 2009
Posts: 339
Likes: 4
Year: 1996
Model: Cherokee
Engine: 4.0L
It's working correctly.
What u can do before getting another TCU is checking the NSS and the speed sensor.
Test NSS continuity with an ohmeter. Disconnect the harness and test the connector terminal on the NSS.
Continuity should exist between terminals B and C with the tranny in P and N only.
Continuity should exist between terminals A and E with the tranny in R only
Continuity should exist between terminals A and G with the tranny in 3 only
Continuity should exist between terminals A and H with the tranny in 1-2 only.
No continuity should exist in D.
Good luck!
What u can do before getting another TCU is checking the NSS and the speed sensor.
Test NSS continuity with an ohmeter. Disconnect the harness and test the connector terminal on the NSS.
Continuity should exist between terminals B and C with the tranny in P and N only.
Continuity should exist between terminals A and E with the tranny in R only
Continuity should exist between terminals A and G with the tranny in 3 only
Continuity should exist between terminals A and H with the tranny in 1-2 only.
No continuity should exist in D.
Good luck!
And thanks
Thread Starter
Seasoned Member
Joined: May 2009
Posts: 339
Likes: 4
Year: 1996
Model: Cherokee
Engine: 4.0L
CF Veteran
Joined: Jun 2009
Posts: 5,383
Likes: 5
Year: 1988 limited
Model: Cherokee
Engine: 4.0 litre
CF Veteran
Joined: Jun 2009
Posts: 5,383
Likes: 5
Year: 1988 limited
Model: Cherokee
Engine: 4.0 litre
Newbie
Joined: Jul 2009
Posts: 10
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Model: Cherokee
almost impossible to get the tranny to be bone dry without takin it out/pan off pulling the TC off and turnin everything upside down....thats why the shops do a flush/fill they just keep adding new fliud and taking out the old but the two will mix and you just keep going til the fluid looks red and fresh..........ive seen it done where you hook your cooler lines to a long hose put the hose in a 5 gallon bucket idle the truck and keep adding new fluid thru a funnel into the dipstick hole until the bucket is nearly full.....very wasteful,messy and GHETTO......not recommended
I need help!
Thread Starter
Seasoned Member
Joined: May 2009
Posts: 339
Likes: 4
Year: 1996
Model: Cherokee
Engine: 4.0L
Need a suggestion, i was under the jeep today and its as dirty as it has been to a desert while it was raining. Should I get it washed thoroughly then try to look for the things which are covered by dirt? or would washing it would cause more problems? I will go for a complete wash, engine bay, underneath the jeep, all the dirt, oil and other foreign things would be out.. then I think it would be easier to work on it, I just wanted to ask, since there are many wires going underneath the jeep, would washing it cause more problems? Or it would as problematic as it is right now? :P