If anyone wants a solid arm workout, try removing a 22 yr old o2 sensor out of a jeep. Holy hell that was rough.

 

In the alternator.

 

Anyone know if I can repair a cracked knock sensor? Or.will I have to replace it?



Update, I put r32 silicone on it and put it back together, I'll give that a shot for now and see what happens, if it works for a few days I'll be happy. Its not a permanent fix, just.for now.

 

Knock sensor. It won't cause any driveability problems.

 

OK so I tested my alternator. It passed. I did my own test of turn the jeep on and removing the positive cable off the battery. She still ran, I changed my o2 sensor, and I found and fixed a few damaged wires. But when I have too many things running, she still dies out. Anyone have a clue on what it could be?

 

OK I give on this f***ing jeep. First she dies out now she won't get out of first gear. I don't have the patience or money anymore. I'm probably just gonna scrap it.

 

Not a good alternator test. Sorry for your frustration.

 

OK so it will shift gears only at redline. Is my trans out?

 

check the tcm (transmission controle module/unit) its mounted to the back of the plastic piece right below that little compartment under the glove box. i unplugged mine and shifted manually

 

How did u shift manually? And would it be the throttle position sensor? I did have to rewire it because the wires were damaged

 

OK problem fixed. It was my TPS. The wires were so damaged that I had to cut and solder them.

 

Cool. Have you adjusted the TPS?

 

No. The wires were frayed so when I first fixed them I used those cheep wire connectors and when I put it all together, one of them wasn't connected, so I took apart the male pig tale and stripped the 3 wires and soldered them up. But I still have an issue when I turn my AC/heater on. It might be a bad wire. Because only when I turn on my heat the jeep dies at a light.

 

RENIX TPS ADJUSTMENT
Before attempting to adjust your TPS be sure the throttle body has been recently cleaned.
It's especially important that the edges of the throttle butterfly are free of any carbon build-up.
IMPORTANT NOTE: Using the positive (red) lead of your ohmmeter, probe the B terminal of the flat 3 wire connector
of the TPS . The letters are embossed on the connector itself.
Touch the black lead of your meter to the negative battery post.
If you see more than 1 ohm of resistance some modifications to the sensor ground harness will be
necessary. The harness repair must be performed before proceeding.
I can provide an instruction sheet for that if needed.
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 and they're clearly embossed with the letters A,B, and C.
Wire "A" is positive.
Wire "B" is ground.
Key ON, measure voltage from "A" positive to "B" ground by back-probing the connectors..
Note the voltage reading--this is your REFERENCE voltage.
Key ON, back-probe the connector at wires "B" and "C". Measure the voltage. This is your
OUTPUT voltage.
Your OUTPUT voltage needs to be seventeen percent of your REFERENCE voltage. For
example: 4.82 volts X .17=.82 volts. 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 flat 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 square four-wire connector clearly embossed with the letters
A,B,C, and D. It only uses three wires and provides information to the Transmission Control Module.
Key ON, measure voltage between "A" positive and "D" ground. Note the voltage. This is your
REFERENCE voltage.
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.
For example 4.8 volts X .83=3.98 volts. 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.
Revised 11-28-2011

 

Wow. Thank you for that. I did the test and everything is good. But would my ecu be the reason I'm having issues with the power?