Ok got a Real good Electrical problem come on in

[GOLDCYLON]

Originally Posted by tccrab

Johnny:

I had a similar misfire, although mine was intermittent.
http://www.zr1.net/forum/showthread....ght=probe+plug
If you've never stuck the probe from your volt meter into the ECM plug, then I wouldn't worry about it.
But if you have...............


TomC
'Crabs

I remember that TC what about a bad quad driver Johnny? Or that coil base as a possibility as well?

[phrogs]

TomC I remember your issues and I checked the pins they grab onto the male pins on the ECM with definate drag so I have conection there.

What im going to do to day is swap the pins from #6 into another injectors wire spot on the ECM and see if it fires that cylinder just for grins.

Im going to get the Noid light and see what that tells me.

As for the Coil pack base Does that signal to the ECM that the spark plug is sparking before it allows the injector to pulse?

[tccrab]

Originally Posted by phrogs

As for the Coil pack base Does that signal to the ECM that the spark plug is sparking before it allows the injector to pulse?

Johnny:

I don't have schematics here at work, but I would suspect that there are independent circuits that control the coil pack and the fuel injector functions.
My thinking is that the coils are "waste spark" and fire twice per rotation where as the fuel injectors only fire on the intake stroke.
It's possible that the same trigger is used to fire both functions, but the control circuitry are most likely different.

TomC
'Crabs

[XfireZ51]

Originally Posted by tccrab

Johnny:

I don't have schematics here at work, but I would suspect that there are independent circuits that control the coil pack and the fuel injector functions.
My thinking is that the coils are "waste spark" and fire twice per rotation where as the fuel injectors only fire on the intake stroke.
It's possible that the same trigger is used to fire both functions, but the control circuitry are most likely different.

TomC
'Crabs

Firing the coils packs is controlled by the Ignition Module, not the ECM. ECM controls the timing.

[phrogs]

Originally Posted by XfireZ51

Firing the coils packs is controlled by the Ignition Module, not the ECM. ECM controls the timing.

so what signals the ECM to fire the injectors?

something must tell it that it is time to fire. Is it the Camshaft sensor?

I am trying to reduce the possibilities of other things being broken other than the ECM but it looks like it is the ECM all day long..

[GOLDCYLON]

Originally Posted by XfireZ51

Firing the coils packs is controlled by the Ignition Module, not the ECM. ECM controls the timing.

This was my understanding as well which is while my money is still on the coil sytem or the module under the plenum

[Demps]

JP,
Have you changed the coils around to rule out a partial failure?
Trd

[phrogs]

I just took the #6 and #1 injector wires and swapped them in the ECM weather pack so I could double check my harness I installed the harness and with the Noid light checked the harness The #1 injector worked with #6 wire pluged into the #1 spot. Its just the #6 not working. It seems to me that the ecm is my problem since it controls the primary injectors.

[tccrab]

Johnny said he had good spark in his original post.
Just no fuel from injector.

My bet is that it's ECM related.

Beg, borrow or steal another ECM, plug it in and start 'er up.
I'll bet dollars to donuts that the problem goes away...

TomC
'Crabs

[Demps]

Originally Posted by tccrab

Johnny said he had good spark in his original post.
Just no fuel from injector.

My bet is that it's ECM related.

Beg, borrow or steal another ECM, plug it in and start 'er up.
I'll bet dollars to donuts that the problem goes away...

TomC
'Crabs

Oops, saw the "not firing" and ran the wrong trail. Hopefully the ECM will fix it.
Ted