fireman_bob
Petty Officer 2nd Class
- Joined
- Mar 16, 2008
- Messages
- 100
Ok so I'm on my 3rd try with a repaired EMM. I get it back from DFI and plug it in. I use the diagnostic software to fire coil 1. The motor jumps, apparently from the spark igniting the left over fuel in the cylinder (from when I was cranking with the EMM not working). So I figure all is good. Go to start and all it does is crank (get the fuel pump on, lights on dash, etc). I put a timing light on the plugs and no spark. With the software I can turn on each coil and hear a clicking from within the EMM so I know something is happening. It just seems there's no high voltage coming going to the primaries of the coils. I've checked my coils and they are all within spec as far as resistance. I put a peak reading voltmeter on the primaries and all I get is around 2.5vdc.
I have to assume that DFI is testing these EMM's on a good motor so what the heck can be so wrong with my motor that it pops the ignition circuit in the EMM as soon as I go to start?
I checked the wiring at the EMM and I'm getting 20+ volts when cranking on all the 40v lines. I have a good solid 12v from the battery. I've removed and cleaned all of my grounds and checked them ALL at the EMM connectors with a good ohm meter. All are right at the lead resistance of around 0.2 ohms. The motor shows between 200 and 500 rpm when cranking.
The main issue that started this whole (1 month so far) escapade was that the capacitor in my EMM cut loose and the engine died. I'm wondering if that caused so much damage that the EMM board is really toast and all the repairs in the world won't fix it.
Could it be that my EMM is just really screwed up and time for a new one, or can something else outside of the EMM cause this type of issue.?
I have to assume that DFI is testing these EMM's on a good motor so what the heck can be so wrong with my motor that it pops the ignition circuit in the EMM as soon as I go to start?
I checked the wiring at the EMM and I'm getting 20+ volts when cranking on all the 40v lines. I have a good solid 12v from the battery. I've removed and cleaned all of my grounds and checked them ALL at the EMM connectors with a good ohm meter. All are right at the lead resistance of around 0.2 ohms. The motor shows between 200 and 500 rpm when cranking.
The main issue that started this whole (1 month so far) escapade was that the capacitor in my EMM cut loose and the engine died. I'm wondering if that caused so much damage that the EMM board is really toast and all the repairs in the world won't fix it.
Could it be that my EMM is just really screwed up and time for a new one, or can something else outside of the EMM cause this type of issue.?