trailing coil no spark
HAILERS
Joined: May 2001
Posts: 20,563
Likes: 27
From: FORT WORTH, TEXAS,USA
The Main Relay feeds both the lead and the trail coils from the same wire. That powers the coils. So if the Lead coil has power, the other should have power also.
Other than that power wire for the trail coils, there are but three other wires for the trail coil. And it's a straight shot from the coil assy to the ECU . No connectors inbetween.
Almost the same with the CAS. It's a straight shot from the CAS to the ECU on a series five.
If the car runs, you know the ECU is getting power.
IF the trail coil is bolted down with at least one of it's inboard studs/nuts, then the trail coils ignitor has it's required ground.
You could ohm out the CAS FROM the ECU and compare the CAS coils with the value given in the FSM. I think it's about 220 ohm or so...memory.
Other than that power wire for the trail coils, there are but three other wires for the trail coil. And it's a straight shot from the coil assy to the ECU . No connectors inbetween.
Almost the same with the CAS. It's a straight shot from the CAS to the ECU on a series five.
If the car runs, you know the ECU is getting power.
IF the trail coil is bolted down with at least one of it's inboard studs/nuts, then the trail coils ignitor has it's required ground.
You could ohm out the CAS FROM the ECU and compare the CAS coils with the value given in the FSM. I think it's about 220 ohm or so...memory.
Last edited by HAILERS; Dec 10, 2008 at 11:43 PM.
HAILERS
Joined: May 2001
Posts: 20,563
Likes: 27
From: FORT WORTH, TEXAS,USA
Last edited by HAILERS; Dec 10, 2008 at 11:50 PM.
The Main Relay feeds both the lead and the trail coils from the same wire. That powers the coils. So if the Lead coil has power, the other should have power also.
Other than that power wire for the trail coils, there are but three other wires for the trail coil. And it's a straight shot from the coil assy to the ECU . No connectors inbetween.
Almost the same with the CAS. It's a straight shot from the CAS to the ECU on a series five.
If the car runs, you know the ECU is getting power.
IF the trail coil is bolted down with at least one of it's inboard studs/nuts, then the trail coils ignitor has it's required ground.
You could ohm out the CAS FROM the ECU and compare the CAS coils with the value given in the FSM. I think it's about 220 ohm or so...memory.
Other than that power wire for the trail coils, there are but three other wires for the trail coil. And it's a straight shot from the coil assy to the ECU . No connectors inbetween.
Almost the same with the CAS. It's a straight shot from the CAS to the ECU on a series five.
If the car runs, you know the ECU is getting power.
IF the trail coil is bolted down with at least one of it's inboard studs/nuts, then the trail coils ignitor has it's required ground.
You could ohm out the CAS FROM the ECU and compare the CAS coils with the value given in the FSM. I think it's about 220 ohm or so...memory.
ok so last night i got the trailing to work. at first i had to jump the tach then. I just grounded it with all three bolts. i cleaned the connections on the two 8mm bolts on the front of the coil. Its sparking now with the tach working too.the car started but you still have to floor it to start it. So I'm thinking its something like the fuel injector plugs are wrong or a big vac leak witch are things i can figure out an find pretty easy. But ill let you know if i get it back to running good. Thanks for helping
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