Base2Final
NAXJA Forum User
- Location
- Euless
he Jeep:
-1990 Jeep Laredo 4x4 4.0 / AW4 6” lift on 33’s stock gears I believe.
Little back story could help:
In 2013 - the PO (a very close friend) went to the junk yard and got a used motor and trans out of a donor XJ same year, completely rebuilt both , pulled original motor and replaced with said Rebuilt motor, transmission, & T case. They all have about 12 miles on them now. At the time of all the rebuilds ALL new sensors for everything were installed He got the Jeep running and driving. He then started the interior, completely gutted the inside down to metal. He lost interest at that time. The Jeep sat untouched since 2014. Recently I bought it from him for a song and continued where he left off. Drained the fuel and added fresh yada yada got it running and driving again. I am new to Renix era stuff but, no stranger around a wrench or volt meter. A little while back I ran into shift issues which I found was simply the TCU was unplugged and still attached to the lower dash. Plugged it in and all seemed fine, HOWEVER, I that time I have not driven outside my neighborhood and assumed it was good to go.
The issue I am having now. Jeep shifts fine through all the gears 1-3 ( I think I counted 3 ) IT SEEMS but, as soon as I get around 40 mph and I think I wants to shift into 4th/ OD, it’s like I got on the brakes hard. It will NOT go into 4th/OD, can not get past 40ish mph at all. I tried to power through it but it just down shifts. I let off the gas it’ll go back to normal. I have searched all the forums I could and I think I’ve gone through most of everything I’ve read that was suggested. There is so much crap still unplugged I am hoping it’s that simple and y’all may have a clue for me.
So far I have: Tested the brake switch, static no pedal shows good resistance and depressed pedal shows OL, seems ok. Checked, adjusted ( square plug ) and even swapped out the TPS with a known good one, no change. Tested all three trans solenoids at the C14,C15 & C16 pins, all show exactly 15ohms which I seem to recall is normal. Checked both ground pins on that plug and they tested solid. Any ground I could find has been cleaned and I replaced the big 7 under the hood with 2g wire, sanded metal and added another body ground with a welded stud to fender. Check all the fuses. Like I said, all sensors are new, albeit sat for 6 years.
I found one, 2 prong plug NOT plugged in on the trans driver side. I see nothing around that looks like the missing half of said plug.
What else can I check?
Link to the evidence : https://photos.app.goo.gl/t2gaa8p7Ai4vpB9GA
Thanks
Sent from my iPhone using Tapatalk
-1990 Jeep Laredo 4x4 4.0 / AW4 6” lift on 33’s stock gears I believe.
Little back story could help:
In 2013 - the PO (a very close friend) went to the junk yard and got a used motor and trans out of a donor XJ same year, completely rebuilt both , pulled original motor and replaced with said Rebuilt motor, transmission, & T case. They all have about 12 miles on them now. At the time of all the rebuilds ALL new sensors for everything were installed He got the Jeep running and driving. He then started the interior, completely gutted the inside down to metal. He lost interest at that time. The Jeep sat untouched since 2014. Recently I bought it from him for a song and continued where he left off. Drained the fuel and added fresh yada yada got it running and driving again. I am new to Renix era stuff but, no stranger around a wrench or volt meter. A little while back I ran into shift issues which I found was simply the TCU was unplugged and still attached to the lower dash. Plugged it in and all seemed fine, HOWEVER, I that time I have not driven outside my neighborhood and assumed it was good to go.
The issue I am having now. Jeep shifts fine through all the gears 1-3 ( I think I counted 3 ) IT SEEMS but, as soon as I get around 40 mph and I think I wants to shift into 4th/ OD, it’s like I got on the brakes hard. It will NOT go into 4th/OD, can not get past 40ish mph at all. I tried to power through it but it just down shifts. I let off the gas it’ll go back to normal. I have searched all the forums I could and I think I’ve gone through most of everything I’ve read that was suggested. There is so much crap still unplugged I am hoping it’s that simple and y’all may have a clue for me.
So far I have: Tested the brake switch, static no pedal shows good resistance and depressed pedal shows OL, seems ok. Checked, adjusted ( square plug ) and even swapped out the TPS with a known good one, no change. Tested all three trans solenoids at the C14,C15 & C16 pins, all show exactly 15ohms which I seem to recall is normal. Checked both ground pins on that plug and they tested solid. Any ground I could find has been cleaned and I replaced the big 7 under the hood with 2g wire, sanded metal and added another body ground with a welded stud to fender. Check all the fuses. Like I said, all sensors are new, albeit sat for 6 years.
I found one, 2 prong plug NOT plugged in on the trans driver side. I see nothing around that looks like the missing half of said plug.
What else can I check?
Link to the evidence : https://photos.app.goo.gl/t2gaa8p7Ai4vpB9GA
Thanks
Sent from my iPhone using Tapatalk