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Old 01-03-2014, 06:04 PM   #1
TJ6
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No Start Issues..

Hey guys.. to sum it up, my 98 4 banger is having some no start issues.. I have been getting some crazy codes on my Code Reader.. Which besides Injector Circuit Malfunction I can't recall.. I called up my buddy who works on heaps and he told me to try removing cables and touching for 30 sec.. and nothing.. so then I read on my XJ forum about the Chrysler ECM Flash.. The ground battery + cable 30 sec.. key on lights on and off thing.. Tried it and it came back on afterwards and my panel lit up fine. I go to turn the key over to start the jeep and bam, a click. I figured maybe my cable came loose; so I proceeded to remove the cables and clean terminals while I was under there, well everything is fleshly reassembled from starter up, checked fuses, relays and connections and still nothing.. I'm stumped. Could a loose connection somehow drain my battery? it had a full charge prior to flash..I'm afraid I might have shorted my ECM, any ideas guys?

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Old 01-03-2014, 08:28 PM   #2
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Hey brother - There's a lot going on that I don't understand from reading.

1) What codes are you getting?
2) Did you trouble shoot them?
3) What fix did you implement?
4) What cables did you remove and touch for 30 seconds? Battery?? I don't understand this at all.
5) When you say "ECM Flash" I assumed you meant the process of installing new software in your ECM -- Can you provide a link to the XJ forum process you followed? Is this just to get the dash to flash out the DTC to you?
6) You said, "Could a loose connection somehow drain my battery?" -- No, not drain your battery, but lose/bad connections certainly can prevent the starter from engaging. Understanding your process from my question 4 & 5 might help us answer too.
7) "I'm afraid I might have shorted my ECM, any ideas guys?" I'm not sure what exactly you did. Help us help you by answering the previous questions.

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Old 01-03-2014, 08:39 PM   #3
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Yes. Remember the codes.
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Old 01-04-2014, 04:59 PM   #4
TJ6
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Quote:
Originally Posted by Tyr4nt View Post
Hey brother - There's a lot going on that I don't understand from reading.

1) What codes are you getting?
2) Did you trouble shoot them?
3) What fix did you implement?
4) What cables did you remove and touch for 30 seconds? Battery?? I don't understand this at all.
5) When you say "ECM Flash" I assumed you meant the process of installing new software in your ECM -- Can you provide a link to the XJ forum process you followed? Is this just to get the dash to flash out the DTC to you?
6) You said, "Could a loose connection somehow drain my battery?" -- No, not drain your battery, but lose/bad connections certainly can prevent the starter from engaging. Understanding your process from my question 4 & 5 might help us answer too.
7) "I'm afraid I might have shorted my ECM, any ideas guys?" I'm not sure what exactly you did. Help us help you by answering the previous questions.
Okay where shall we start..
1- P0203 is the only one I have stored on my reader, MIL was flashing the other times and I did not record it. Some kind of Misfire I figured..
2- I'm not sure.
3- I took the injectors off after I recieved the P0203 code and checked for debris, then took the electrical contact cleaner and cleaned the harness and connections on the injectors. It seemed to run better however I still had the code.
4- First I tried removing the +/- cables from the battery and touched them together for 30 seconds, put them back on and it had no MIL for a couple minutes, but then it started stumbling again; So even though I had not really looked into it I tried something I read on my XJ forum, It said that you can reset the ECM by removing the + cable and ground it to the frame for 30 sec, which removes memory. Then you put it back on and turn the key to acc, then turn lights on, then off. Once that's complete you it should restore it to factory settings and will start recording new data. Forced Flash'
5-Yes, well rather someone posted a link to another forum- ecu reset
6- Yeah I went and had a charge thrown onto the battery. It tested good.
7- Hope this helps. ^
Update-
I picked up the battery (after testing and charge) to the Jeep and reinstalled, and the dash lit up. I proceeded to turn it over and it clicked again and now nothing. No dash lights or anything. I then pulled the battery off my XJ and threw it on, It lit up and then when i turned the key.. nothing. Dash will no longer light up with either battery. I guess I will go out again to reevaluate the situation.
Also yeah the original post is a mess.. it was my attempt to cut through the bs since most people don't bother to read a novel on these forums. Thanks for looking into it!
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Old 01-04-2014, 05:04 PM   #5
TJ6
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Originally Posted by Majnoon View Post
Yes. Remember the codes.
Yeah I should have saved them to the reader, instead I cleared it out and moved on. I can tell you what it was doing when the first set popped up if you would like to know.
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Old 01-04-2014, 05:18 PM   #6
TJ6
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Just as a side note I was reading a post on WF and someone mentioned the wire at the PDC, I did take the wire loose and clean the connection prior to re-installing it back. I checked the connection and it's now tight, however I may be looking in the right direction?
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Old 01-04-2014, 06:04 PM   #7
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Lets go back a little

As I understand it starter is not cranking engine if so that is NOT a computer issue

Either the starter/ solenoid is bad or the battery is bad or the main cables or their connections at one end or other is bad( this includes the ground cables) or the starter circuit from key is not supplying voltage to the solenoid

Put the tranny in park if auto or neutral if manual and run a jumper from battery positive to the SMALL wire terminal on the starter mounted solenoid and tell us if starter cranks the engine over
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Old 01-04-2014, 06:46 PM   #8
TJ6
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Originally Posted by Digger84 View Post
Lets go back a little

As I understand it starter is not cranking engine if so that is NOT a computer issue

Either the starter/ solenoid is bad or the battery is bad or the main cables or their connections at one end or other is bad( this includes the ground cables) or the starter circuit from key is not supplying voltage to the solenoid

Put the tranny in park if auto or neutral if manual and run a jumper from battery positive to the SMALL wire terminal on the starter mounted solenoid and tell us if starter cranks the engine over
It's funny you mentioned that. I was just getting on to say I think I found the problem! The solenoid wire shorted inside of a wire loom and melted to the body. I'm fixing it as we speak and ill update you guys after I finish!
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Old 01-04-2014, 06:49 PM   #9
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Old 01-04-2014, 07:58 PM   #10
TJ6
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Well that was a problem.. however it seems like that's only the beginning. I got it started and running after jumping the battery.. ran alright but it smelled like it was burning up my cat. Too much fuel I figured.. then it slowly started smelling like burnt oil, so I popped the hood and its smoking like crazy. So I cut it off but when I turned the key back to make sure I still have a charge I have nothing. Doesn't even beep or make an attempt to light up the dash. I checked the wire that shorted and its good. The leak appears to be my valve cover but it did not leak prior to tonight.. now I'm back to the drawing board.

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