cruiser54

I know you've got 2 XJs, correct? This is the 90?

What have you done to this one in regard to my write-ups?

DESERTXJ206

This is the 88. I just sold the 90 last week.

I haven't seen your list in awhile but I've cleaned all the connections and dielectric greased them. I cut and soldered the 6 sensor grounds and cleaned out the c101

cruiser54

Checked the CPS output?

Done the coil/ICM contacts?

DESERTXJ206

No and no. Write up?

allevolution

Sorry to butt in,
Too many details to even explain.. its not renix I know cruise54 is the renix expert? lol

https://www.cherokeeforum.com/f2/rou...please-174601/

cruiser54

Click on the link in my signature. See post # 4 and #7.

cruiser54

I don't understand why you are butting into desertxj's thread. He started it purposely to address the issue he's having with HIS Renix Jeep. Since you already have a thread that you've been bumping, please stay with that.

allevolution

Well besides it being of a similar issue
You specifically asked me for the link...

DESERTXJ206

I'm on the app, is there a special way for me to see the sigs?

Sorry for the inconvenience. I'll search on my saved threads to see if I've got em.

Radi

Here you are:

#4:
Renix Jeep ICU/Coil contact refreshing
　
　

The contacts between the coil and the ICU on your Renix Jeep can become corroded and loose causing a complete or intermittent no-start condition. I recommend the following procedure as a maintenance precaution to insure this is eliminated as a possible cause now and in the future.

The coil is attached to the ICU by two T20 Torx bolts. Remove these two bolts and lift the coil up off the ICU. You will see 2 pins and 2 sets of contacts. Clean both the pins and springy contact pieces with a good electronics cleaner and some fine sandpaper.

Squeeze the springy contacts closer together with some needlenose pliers. Bolt the coil back on to the ICU.

While you’re right there, unplug the connectors from the ICU and inspect the pins in the harness connector. Make sure the pins are not retracted into the connector. Spray out the connector and the receptacle of the ICU with the same good electronics cleaner you used earlier.

I feel this procedure should be performed at least once in the lifetime of a Renix Jeep.

　

Revised 04-04-2013
__________________





#7:

Renix CPS Testing and Adjusting
　
　



Renix CPSs have to put out a strong enough signal to the ECU so that it will provide spark.

Most tests for the CPS suggest checking it for an ohms value. This is unreliable and can cause some wasted time and aggravation in your diagnosis of a no-start issue as the CPS will test good when in fact it is bad.

The problem with the ohms test is you can have the correct amount of resistance through the CPS but it isn’t generating enough voltage to trigger the ECU to provide spark.

Unplug the harness connector from the CPS. Using your voltmeter set on AC volts and probing both wires in the connector going to the CPS, crank the engine over. It won’t start with the CPS disconnected.

You should get a reading of .5 AC volts.

If you are down in the .35 AC volts range or lower on your meter reading, you can have intermittent crank/no-start conditions from your Renix Jeep. Some NEW CPSs (from the big box parts stores) have registered only .2 AC volts while reading the proper resistance!! That’s a definite no-start condition. Best to buy your CPS from Napa or the dealer.

Sometimes on a manual transmission equipped Renix Jeep there is an accumulation of debris on the tip of the CPS. It’s worn off clutch material and since the CPS is a magnet, the metal sticks to the tip of the CPS causing a reduced voltage signal. You MAY get by with cleaning the tip of the CPS off.

A little trick for increasing the output of your CPS is to drill out the upper mounting hole to 3/8" from the stock 5/16", or slot it so the CPS bracket rests on the bell housing when pushed down. Then, when mounting it, hold the CPS down as close to the flywheel as you can while tightening the bolts.

DESERTXJ206

Much appreciated! I'll have to do those tomorrow evening after work.

cruiser54

Do you have a PC at home?

Also, when you did some bypass wiring, did you use butt connectors or solder?

Having that 88, you should print out those write-ups in the link and keep them in your Jeep!!!

cruiser54

Oh, dopey me.

DESERTXJ206

Yeah I've got some laptops at home, I never thought about printing them out!

The only by pass I did was with the sensor grounds and I used solder on all the connections. I also tested the sensors for resistance again recently when I did my TPS on the 88 and it didn't fluctuate at all no matter where I shook the harness so I think I'm OK there.

I will get around to doing those 2 things this evening, I've also got to replace my crappy master cylinder. Dang brake pedal doesnt hold pressure when at a stop. I've bled the system And flushed it multiple times and still does it so I'll see if this helps that is issue.

cruiser54

Print them out, and then tell me which ones you HAVE done so far on the 88.