HELP ENGINE WONT START**fire missing
07-08-2010, 11:56 AM
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HELP ENGINE WONT START**fire missing I've done a couple of search. I have a LS6 in my rx7. I currently got fuel from injectors ( my plugs were having when i putted it off), my fuel pump is ok. The problem is not coming from fuel setup. I have Juice to coilpacks, my Crank sensor is fine( i have fuel) , my 3 grounds are on the back of a head. My engine is grounded on each heads to chassis.
I dont understand.
I dont understand.
07-08-2010, 12:55 PM
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I was having some problems with my swap too. Only mine was dropping spark on one whole bank while the other was fine. So in tracking down my issue, I learned quite a few things about the coil system.
Frist, you'll want to use a volt meter which can measure ressitance. Connect one end to the body and check the wires at the coil. There are 4 wires on each coil,
Pink is 12v (key on). check this, also while checking, wiggle the main coil connector- this was where my issue was.
The wire next to that is the signal wire from the PMC. This wire will be a different color on every coil, all the others look the same. This wire carries a 5 volt pulse from the PCM when it is commanded to fire. Use a test light to verify the coil is getting this signal.
The 3rd wire is a "low reference" signal to the PCM. essentially ground, you should get continuity on this wire to the body and no resistance.
The 4th is standard gound. You should also get continuity on this wire to the body and no resistance.
Check all those. Also verify the signal wires are going to the right pins on the PCM.
If you're not getting spark, one of these situations will be your problem.
Good luck!
Frist, you'll want to use a volt meter which can measure ressitance. Connect one end to the body and check the wires at the coil. There are 4 wires on each coil,
Pink is 12v (key on). check this, also while checking, wiggle the main coil connector- this was where my issue was.
The wire next to that is the signal wire from the PMC. This wire will be a different color on every coil, all the others look the same. This wire carries a 5 volt pulse from the PCM when it is commanded to fire. Use a test light to verify the coil is getting this signal.
The 3rd wire is a "low reference" signal to the PCM. essentially ground, you should get continuity on this wire to the body and no resistance.
The 4th is standard gound. You should also get continuity on this wire to the body and no resistance.
Check all those. Also verify the signal wires are going to the right pins on the PCM.
If you're not getting spark, one of these situations will be your problem.
Good luck!
07-08-2010, 01:05 PM
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So are you getting spark? A little more clarification would prbably be a good thing here.
07-09-2010, 12:31 PM
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This was NOT the problem, still have no spark. Maf , Map,Cam,crank sensors are all plugged.
Crank sensor is allright 12V on ign, 5V when cranking
Crank sensor is allright 12V on ign, 5V when cranking
Last edited by bovi; 07-09-2010 at 03:03 PM.
