October 10th, 1998 I'm guessing.

2 things come to mind if that's true. And one other number off the engine will clarify this. There's a 10 digit number, rather large, embossed in the driver's side of the block. Get that.

If you used the flexplate from an HO, you will have odd firing issues as their fuel injection systems operate differently.

Another thing is that if you bolt a Renix intake manifold on to an HO head, you MUST use the Renix gasket or you'll have a huge vacuum leak.

Get that number for me.

 

My work has me out of town. Ill get those numbers this weekend

 

Okay. Be safe.

 

Only number i see on driver side of block. ( right above an over from the water sensor I think). It's a 5 digit number. 167 | 88

Also there is a he's headed bolt with a washer it looks like for a ground?? Alittle to the right of lower water neck and below freeze plug.

 

Jeeps running perfect. Thank you guys for yalls input.

The fix: new CPS. Old one was damaged from pulling old motor. The metal nipple was scarred and burred up.

Awesome forum thanks guys

This will be my new forum, learned alot.

 

And the crowd cheers! ......Well done! Yea, like mentioned in post #9, checking that CPS only takes a minute. Glad you gotr'

 

Hate to bring a thread from the dead but read the tread and lots of good info in here. I have an 88 xj 4.0 it runs, idles and revs but has a misfire. When under load in drive on light accel I have a mis/stutter little more throttle or less its fine, and again upon shifting at 2500 rpm. It runs fine on wot but I'm stumped. Changed plugs, wires, cap, rotor, tps, fuel filter, pulled and bench tested injectors and they were fine. Haven't checked fuel pressure yet but it runs good at wot which leads me to believe fuel pressure is there. Ohmed out flat three on tps to negative bat cable and shook the crap out of harness' and c101 connector and I'm at 0.00. Idk fellas I'm stumped.

 

Did you adjust the TPS?

I think a fuel pressure test is a good idea also.

Click on the pink link in my signature below and read through posts #1, 2, 3, and 8.

This wiil not kick our butts!!!

 

Yes I did adjust tps I have 4.69 in and 3.90 out on the square connector, i didnt try flat 3.

 

Adjust it on the engine side. The connector you used is for the trans and it is "flexible" Post #8.


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: With the Key OFF, and 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. Wiggle the wiring harness where it parallels the valve cover and also over near the MAP sensor on the firewall. If you see more than 1 ohm of resistance, or fluctuation in your ohms reading, 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 only a flat three-wire TPS mounted on the throttle body and it provides data input to the ECU. It 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. Loosen both T-20 Torx screws attaching the TPS to the throttle body and rotate the TPS until you
have achieved your desired output voltage. Tighten the screws carefully while watching to see that your output voltage remains where it is supposed to be. If you can't achieve the correct output voltage, replace the TPS and start over.
Sometimes, after adjusting your TPS the way outlined above, you may experience a high idle upon starting. If that happens, shut the engine off and reconnect your probes to B and C. Start the engine and while watching your meter, turn the TPS clockwise until the idle drops to normal and then rotate it back counterclockwise to your desired output voltage.
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, as outlined above—FOR ALL 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. THIS SQUARE FOUR WIRE CONNECTOR IS USED FOR TRANSMISSION/SHIFTING RELATED ISSUES ONLY. 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.
FOR AUTOMATIC TRANSMISSION RELATED ISSUES: Check the square four-wire connector side of the TPS.
If you have ENGINE ISSUES check the flat 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 09-22-2012

 

Did you read any of the posts in my link?

 

Yeah I did, but I found the info for adjusting the tps over the weekend on another forum that didnt state anything about the difference of the 2 connectors. I've read through yours lots of good info to give me some spots to check rather then throw parts at it. Once I'm off work today I will mess around with its and see what I can come up with.

 

After the ground refreshing which absolutely needs to be done, do #5 also. Enjoy.

 

Did that last night after I read this thread and my resistance was all over the place. Found a black wire in the harness past the c101 and recrimped it and got the resistance back to steady 0. Thanks

 

Have you done the ground refreshing and C101 cleaning yet?