Hey guys I have a 87 waggy limited and I just got it to run and I took it out to drive it and she won't shift out of first gear. What could it be?

 

adjust the kickdown cable... Did you check the trans fuild?

 

I just messed with the cable and its not racheting like it should. I've never messed with a 87 its pretty different from my 97.

 

1. Link for TV cable adjust

http://naxja.org/forum/showthread.php?t=1015963

2. Throttle position sensor. VERY common problem on the 87-90. Function of this sensor is directly related to transmission shifting characteristics. More on this below.


RENIX TPS
(Thanks to Joe Peters from NAXJA for this information)

MANUAL TRANSMISSION:

RENIX manual transmission equipped XJs have a three-wire TPS mounted on the throttle body. This manual transmission vehicle TPS provides data input to the ECU. The manual transmission TPS has three wires in the connector. Wire "A" is positive. Wire "D" is ground. Remove the three-wire connector from the TPS. Key ON, measure voltage from "A" positive to "D" ground. Note the voltage reading--this is your REFERENCE voltage. Now, reconnect the three-wire connector to the TPS. Key ON, back-probe the connector at wires "B" and "D". Measure the voltage. This is your OUTPUT voltage. Your OUTPUT voltage needs to be seventeen percent of your REFERENCE voltage. Adjust the TPS until you have achieved this percentage, if you can't achieve the correct output voltage replace the TPS and start over.

AUTOMATIC TRANSMISSION:

RENIX automatic transmission equipped XJs have a TPS with two connectors. There is a three-wire connector, same as the manual transmission vehicles have, and it is tested the same as the manual transmission equipped vehicles--FOR ENGINE MANAGEMENT RELATED ISSUES. However, the automatic TPS also has a four-wire connector. For the automatic transmission equipped vehicles the four-wire connector provides data to the TCU. Disconnect the four-wire connector. Key ON, measure voltage between "A" positive and "D" ground. Note the voltage. This is your REFERENCE voltage. Now, reconnect the four-wire connector to the TPS. Back-probe the connector at wires "B" and "D". Measure the voltage. This is your OUTPUT voltage. Your OUTPUT voltage needs to be eighty-three percent of your REFERENCE voltage. Adjust the TPS until you have achieved this percentage, if you can't replace the TPS and start over.

So, if you have an automatic equipped XJ your TPS has two sides--one side feeds the ECU, and the other side feeds the TCU. If you have TRANSMISSION issues check the four-wire connector side of the TPS. If you have ENGINE issues check the three-wire connector side of the TPS.

For those with a MANUAL TRANSMISSION--the TPS for the manual transmission XJs is stupid expensive. You can substitute the automatic transmission TPS which is reasonably priced.

 

Nice post TJ

 

ive tried that cable adjustment but it doesnt work. there is a loose wire that runs down the intake manifold and when i press on it the throttle cable is pulled. i followed this wire and it wen to a black bulb looking thing that has electrical connectors this is located on the pass side firewall

 

i noticed that the throttle cables were really loose so i tried adjusting the cable that didnt work so i followed some of the throttle cables back to this thing.

what is it and could this cause my jeep not to shift out of first