So i went out tonight and checked the grounds again, i went on ahead and cut and re crimped the grounds to the wires going to the dipstick post. So those are good, just wondering but are there 3 sets of wires including the negative going to the ground? I have 2 wires in one crimp that look to be about a 10 gauge and 2 more that are in another crimp connector that are about a 12 guage. Anyways yes i did that i tested for voltage on the ICM and it says around 11.6v. Also do you think it could be the stator in the distributor? I saw a post in earlier on that. Anyways thanks for the help just lemme know what u guys dig up.

 

Stator doesn't affect spark on a Renix. It's there so the eCU knows when to fire the injectors sequentially.

Unplug is and see what happens.

 

Oh ok see I learn somthing new every day. Ill unplug the distributor today and try to start it. Thanks again.

 

OK-Let's go back to terminology-When you say "No Spark", does that mean you pulled a plug wire off the spark plug or distributor and can see no spark while cranking or do you mean the engine won't fire/run?


If you have voltage to the coil, a new CPS, a new distributor rotor, cap, plugs and plug wires I'm a little surprised you can't get a spark. Weak CPS, bad MAP tube etc will cause poor running/starting but rarely no spark at all. I'd recommend that you try removing a spark plug from the engine, keep the plug wire plugged to it and the distributor and touch it to the engine block while cranking. See if there is spark at the plug gap. If nothing at all, you may want to take that coil back and try another one. Do you have the old one that was in the Jeep originally? Might want to put the old coil back in if it ran with that one.


Don't underestimate good grounds either. These Jeeps are poorly grounded so the more ground wires, the better. Clean off that stud on the dipstick to bare metal with a wire wheel. The bolt too and all the connectors should be shiny before you tighten it down.


"No Run" conditions are easier to figure out than "Poor running" or intermittent problems so you must have something basically bad for it to do this. Your starter turns the engine over, your fuel pump is providing pressure, so all you should need to get something to happen is the spark assuming you have air and compression too.

 

Trovicl, here is something I found and you might laff, you might cry, either way, yer gonna ask WHY?


This recently happened to me... 91 XJ.


I recently replaced my water pump ( i know, yu are asking what in the heck does this have to do with my freaking problem????).


well, after getting everything all buttoned up new pump, and new radiator hoses. coolant put in, double check all fittings etc, hook battery back up and go to start the Jeep,, nothing. crank crank crank crank crank crank....


Now I am goin "W-T-F???" I check for fuel,, plenty of pressure..... I check for spark......no spark.... I says to myself "arrrrgh" CPS just went.


so i go to store, get new CPS.....install.....NO JOY.........


I am scratchin my head cursin like a bandit.......


I run the codes (key turn sequence).......i get a "22" code......coolant temperature sensor circuit..


WTF?


So I remove the sensor.....I put the old CPS back on....... I remove batt cables, hold together to clear codes.re-attach batt cables

go to parts store (again) buy coolant sensor.......install.


VROOOOOM! starts right up.


don't ask me how or why..... but apparently the senor went bad the same time my water pump bearing went.


And because it set a code in the ECU..... it probably wouldn't allow the starting system to fire as the ECU didn't have a temp reading so it went into fail-safe mode.


just my 2.5 cents worth sir. check codes...might see somethin there.


best of luck!


cpnwrench

 

Hey cpnwrench only thing is is that my cherokee is a renix and the 91 I think is the HO one. Im guessing the sensors are alot different or somthingand thats why it appears everyone hates working on them. But I thank you for the info though.

 

I've got an '88 XJ and I found out by accident that when the oil is drained out the Jeep wouldn't start. I don't know if that was a fluke, but when I filed it back up with oil it started again. It did not crank though...which yours does.

I sure hope you get it worked out soon though. I feel your pain...

 

hey thanks man i appreciate it. I checked the oil yesterday and its just at the add mark.

 

Yes i pulled the spark plug and did that and i recieved no spark. There is no spark whatsoever. Im personally starting to think its the ICM. But im waiting to see what cruiser54 and dflinstone say. And what they seem to think.

 

Trovilcl,


you still have a temp sensor on that engine. it ties to the ICM.....pretty sure.


10 bucks at autozone...


hope you get it figured out sir!


when you do, let us all know so we can scratch our chins and say .....ah-ha!


cheers!


cpnwrench

 

Ok thanks man ill check it out. Yeah i hope i get this done soon winter is coming.

 

So just wondering but does everyone give up on helping people? I let this thread go for almost 2 weeks to see if anyone would help but its upsetting seeing that no one replied or even tried to give any advice to someone suffering. I tell ya this Renix system is tough but i dont plan on giving up. The sages of this website whom have so much respect have given me great info and a world of information, however it hasnt helped. My jeep still sits to this day in my garage due to my inability to diagnose the problems. I have replaced several hundred dollars worth of parts on this thing and unfortunatly do not have much more money to sink into it. Please if anyone has any information i would be very grateful for it. Cause as for right now its seems i have done everything i can to fix this dang jeep. But right now the Renix is winning.

 

seem like every aspect except the module under the coil has been addressed no ?

 

Found this a while back....http://www.links4jeeps.com/forum/ind...&topic=10558.0

 

Heres info on testing circuit from ecm to module...http://www.justanswer.com/chrysler/2...-ignition.html