2002 Jeep Liberty no spark

Tiny
BIGGENE10
  • MEMBER
  • 2002 JEEP LIBERTY
  • 3.7L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 121,000 MILES
New crank, cam sensors, new battery, 2 (of the 4) O2 sensors replaced, new(a remanufactured unit) ECM from AMS(auto module source in florida) that they said they pre=programmed w/my VIN# and mileage(I confirmed the vin #on the receipt as correct. - ARE THEY REPUTABLE! Because I was given one price on phone and a couple of days later when I went to order it they lied(denying the agreed upon price even when I was told by Barbara to mention "Barbara approved this w/an entry in our system " -she claimed to have entered into their sys!(On the phone again, she lied about the $120.00 agreed upon price, claiming it was $139.95!

Ohm'd out coils-ok, all connections very clean and intact; including all cables, of course, no voltage at pos. Side of coils w/key on, ( I understand the ECM fires coils and injectors by grounding them in sequence), I had to pull the motor down to have the heads rebuilt(dropped vale seat #2 cyl.-No other damage) We had a spark and the motor ran about 3 secs. And quit, seems to me I saw something in my searches one time about security issue where it would run 3 secs. And kill the fuel pump unless some secondary sys. It has kicks in, I have aready confirmed 43 psi on fuel rail, . WTF! Please help!
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Saturday, June 21st, 2014 AT 3:05 PM

16 Replies

Tiny
HMAC300
  • EXPERT
If you don't have a pro fix your security system you'll never get it to run. The ecm repair places cant do that.
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Saturday, June 21st, 2014 AT 3:32 PM
Tiny
BIGGENE10
  • MEMBER
IS it some kind of security issue?
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Saturday, June 21st, 2014 AT 5:16 PM
Tiny
BIGGENE10
  • MEMBER
I want a simple detailed list to walk me through step by step to the solution! I am a trained mechanic on the older vehicles with a vast knowledge and tools (over 40 years) and a certified electronics technician so I am fully capable of understanding any technical lingo too.
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Saturday, June 21st, 2014 AT 5:26 PM
Tiny
BIGGENE10
  • MEMBER
The rt cyl head was replaced and the camshaft was re-installed w/the mark set on the 12 o'clock position as required w/the crank a TDC!
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Saturday, June 21st, 2014 AT 5:32 PM
Tiny
BIGGENE10
  • MEMBER
THE ENGINE RAN BEFORE THE HEAD REPLACEMENT just at high idle and very roughly because #2 Int. Vale couldn't close; is all. It started once and ran for three secs. And quit, this is AFTER the head job. I know pretty well how the computer controlled engine management systems work as I have schooled myself fairly well on them. I'm just not familiar w/the jeep/chrysler products as I haven't had much hands -on experience w/them. I have to say that there HAS TO BE A PERFECTLY REASONABLE EXPLANATION FOR THIS SCENARIO: NO SPARK. C'MON FELLAS, WHY IS THIS? HELP ME OUT HERE?
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Saturday, June 21st, 2014 AT 5:50 PM
Tiny
HMAC300
  • EXPERT
The security system has to be programmed at install not when you get it from a parts store. These modules are vin specific so even if it's programmed it's not programmed security wise. Usually the fuel pump is killed by the security system and auto parts cannot scan those items only engine and transmissions. Your donation has been sent for a refund.
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Sunday, June 22nd, 2014 AT 8:12 AM
Tiny
BIGGENE10
  • MEMBER
Well you never indicated to me whether the security sys. Is a part of the ECM or a stand alone module. And you still haven't said that yet. Also; this ECM came from a REBUILDER, not a parts store and they informed me that by pre-programming in my vin code and mileage that it is a "plug and play". So, you've still left me in a quandary here.

I just ran a check on AMS(auto module source out of Davie, Fl) and there are a whole slew of complaints about how these F---ING CROOKS screwed over these folks in all kinds of ways!

It looks like I could be their latest victim. BTW; I'm surprised that you weren't aware of these clowns? With your years of experience w/chrysler products- surely some other poor bastard had to come to you needing a NEW factory ECM because they dealt w/these people and their supposed reman. ECM?
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Sunday, June 22nd, 2014 AT 11:52 AM
Tiny
HMAC300
  • EXPERT
I didn't really give a reply because you asked for a refund. However when you pulled the head you disconnected the battery when you do that the anti theft has to be reset which I am supposing you tried to start the vehicle. When you replace the ecm you have to re enter a 4 digit code so that the anti theft will go or will allow the car to start. As you have said you have schooled yourself in engine management however anti theft will not set a code in the pcm anyhow. If you had a pro scanner and hooked it up to the aldl then you know it would have shown an anti theft problem. Which only the pro style ones will do not an autoparts one. You seem to be a person that knows everything and won't listen or ask or check into things so you have suffered from your own not knowing and going about this correctly. If you get a manual and look under anti theft it will clearly describe what I have just explained. Happy motoring.
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Sunday, June 22nd, 2014 AT 11:59 AM
Tiny
BIGGENE10
  • MEMBER
WHY THE HELL DID'NT YOU GIVE ME THAT INFO. BEFORE! You should have informed me of the code readers shortcomings. The haynes manual is sadly deficient;chiltons worse. And why am I not going about this correctly?
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Sunday, June 22nd, 2014 AT 1:09 PM
Tiny
BIGGENE10
  • MEMBER
Hell, man; I would have had no issues w/paying you if you had just been forthcoming and explained this to me from the outset. But, after all this riggamarole of yours; I sure don't feel I should have to pay you now.
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Sunday, June 22nd, 2014 AT 1:27 PM
Tiny
BIGGENE10
  • MEMBER
Are u referring to the very expensive programmers used by dealerships, or is there a more affordable unit for a retired person like me?
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Sunday, June 22nd, 2014 AT 1:30 PM
Tiny
BIGGENE10
  • MEMBER
Whoops! The battery was replaced BEFORE PULLING THE HEAD w/no code required to start the vehicle. Where did you say you went to school at?
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Sunday, June 22nd, 2014 AT 1:33 PM
Tiny
BIGGENE10
  • MEMBER
I'm going to have it towed to the dealership and if. IF. It's a 4 digit code needed only. I'll gladly send some money your way again. Just try to determine your client's needs vs. Knowledge/abilities next time. Remember, if not concise info given you(as I did) ask for more info; in view of that, try to get a picture(in your mind) of the exact situation as being seen by your potential client.
Best,
Gene
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Sunday, June 22nd, 2014 AT 2:45 PM
Tiny
HMAC300
  • EXPERT
Any garage that has a pro scanner can do it you don't need a dealer for it.
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Sunday, June 22nd, 2014 AT 3:26 PM
Tiny
HMAC300
  • EXPERT
One other thing I did forget check all your fuses and asd relay underhood I did forget that as I'm not infallible.
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Sunday, June 22nd, 2014 AT 3:27 PM
Tiny
BIGGENE10
  • MEMBER
T Y, Yes, I did just check all that- A-OK. Thanks for that important info. I guess it's time for you pro's to do it to it(as Sonny Pruett used to say on his TV show). Best,
Gene
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Sunday, June 22nd, 2014 AT 5:00 PM

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