|
xLeGeNDx
|
 |
« on: April 15, 2010, 04:52:36 PM » |
|
Alright soooooo
I got a green 1992 Pontiac Grand Prix here that has a blown 3.1L in it (completely trashed) so I decided to go and transplant the 3.1L from my black grand prix into it. (same year)
well before the engine and trans was pulled from the black car the two components was working flawlessly, but now since the transplant into the green car the engine will only crank but not fire. I have been up and down this car with a fine toothed comb and still this puzzles me. I pulled the fuel rail and sure enough the injectors are NOT firing, so i went through and checked the fuses, the wiring, and everything related and still nothing. I'm running out of ideas as to why this thing wont crank so what idea's do you all have?
|
|
|
|
|
Logged
|
1992 Pontiac Grand Prix SE - Lightly Modded Find something simple and complicate it.
|
|
|
|
Prospeeder
|
|
« Reply #1 on: April 15, 2010, 09:16:33 PM » |
|
Hmmm bad ECM or bad ECM ground. It does have spark?
|
|
|
|
|
Logged
|
1990 Pontiac Turbo Grand Prix 80k 1990 Pontiac 6000 LE 3.1 V6 270k 1988 Buick Regal Limited 2.8 70k  |
|
|
|
xLeGeNDx
|
|
« Reply #2 on: April 15, 2010, 11:10:08 PM » |
|
I tested for spark a little bit ago, i was able to get a backfire from it, tried testing it again and got nothing. i went through today and checked all of the grounds and they tested out fine.
|
|
|
|
|
Logged
|
1992 Pontiac Grand Prix SE - Lightly ModdedFind something simple and complicate it.
|
|
|
|
Chris
|
|
« Reply #3 on: April 16, 2010, 05:18:05 AM » |
|
I instantly thought the ECM first too. Can you run a check on it and pull any codes?
|
|
|
|
|
Logged
|
 ive fucked more black guys than fema!
|
|
|
|
xLeGeNDx
|
|
« Reply #4 on: April 16, 2010, 10:01:08 AM » |
|
Can not do, The car has been sitting for an undetermined amount of time, has no codes or anything stored on the computer and since it cant be started can get any codes either.
|
|
|
|
|
Logged
|
1992 Pontiac Grand Prix SE - Lightly ModdedFind something simple and complicate it.
|
|
|
|
Chris
|
|
« Reply #5 on: April 16, 2010, 10:02:28 AM » |
|
It should put out the self diagnostic code regardless. If it doesn't you have a bad ECM.
|
|
|
|
|
Logged
|
ive fucked more black guys than fema!
|
|
|
|
xLeGeNDx
|
|
« Reply #6 on: April 16, 2010, 11:34:15 AM » |
|
oh gotcha, yeah it will spit out code 12
|
|
|
|
|
Logged
|
1992 Pontiac Grand Prix SE - Lightly ModdedFind something simple and complicate it.
|
|
|
|
Prospeeder
|
|
« Reply #7 on: April 16, 2010, 03:12:58 PM » |
|
now you are using a GOOD battery not just trying to jump a garbage battery?
|
|
|
|
|
Logged
|
1990 Pontiac Turbo Grand Prix 80k 1990 Pontiac 6000 LE 3.1 V6 270k 1988 Buick Regal Limited 2.8 70k |
|
|
|
xLeGeNDx
|
|
« Reply #8 on: April 18, 2010, 01:30:33 PM » |
|
Its a good battery, been using it to start another car thats here.
A bit of an update: the injector wires now both have a 12V source going to them (hot at all times), one started leaking a bit of gas while the other 5 injectors did nothing. I applied a source from the battery directly to the injector wiring harness both ground and power and all 6 injctors fired.
|
|
|
|
|
Logged
|
1992 Pontiac Grand Prix SE - Lightly ModdedFind something simple and complicate it.
|
|
|
|
92wbody442
|
|
« Reply #9 on: April 20, 2010, 08:24:37 PM » |
|
ECM comes to mind too. Are you able to pull it and possibly take it to a local GM Dealer to have it tested?
|
|
|
|
|
Logged
|
|
|
|
|
Prospeeder
|
|
« Reply #10 on: April 20, 2010, 08:49:35 PM » |
|
or take 15 bucks and get one at a U pull junkyard and try it, lol.
|
|
|
|
|
Logged
|
1990 Pontiac Turbo Grand Prix 80k 1990 Pontiac 6000 LE 3.1 V6 270k 1988 Buick Regal Limited 2.8 70k |
|
|
|
xLeGeNDx
|
|
« Reply #11 on: April 22, 2010, 04:04:25 AM » |
|
I've tried 3 different ECM's with one of them being known good.
|
|
|
|
|
Logged
|
1992 Pontiac Grand Prix SE - Lightly ModdedFind something simple and complicate it.
|
|
|
|
92wbody442
|
|
« Reply #12 on: April 22, 2010, 06:08:57 AM » |
|
well, it's safe to say it's not the ecm....  I know what this is but can't remember. Sounds sooooo familiar but not hitting it. I tested for spark a little bit ago, i was able to get a backfire from it, tried testing it again and got nothing. i went through today and checked all of the grounds and they tested out fine.
Maybe Ignition Control Module or Coil?? |
|
|
|
|
Logged
|
|
|
|
|
3100MPFI
Guest
|
|
« Reply #13 on: May 01, 2010, 04:27:36 PM » |
|
we discovered that there was a problem with the engine itself. Turns out it had blown up when we parked it. It is just a coincidence but the engine is bad, but was fine when we parked it.
I am letting him fix the STE and he is going to use that until we can get a good engine for it.
|
|
|
|
|
Logged
|
|
|
|
|
Prospeeder
|
|
« Reply #14 on: May 02, 2010, 09:39:49 AM » |
|
i dont think an engine just "goes bad" that easily.my cadillacs V8 still freakin ran after sittin 12 years and on 12 year old gas, lol. Didnt even knock, Just a bunch of flat cam lobes, lol....no compression? Somtimes it takes awhile to reseat the rings to get compression when its sat so long.
|
|
|
|
|
Logged
|
1990 Pontiac Turbo Grand Prix 80k 1990 Pontiac 6000 LE 3.1 V6 270k 1988 Buick Regal Limited 2.8 70k |
|
|
|
Topic: Transplant, Gone Wrong (Read 1498 times)
