Stand alone Ignition ?

[thedj_edm_jetta]

Hey guys, I've been battling a no spark issue for about 3 months now in my 91 G60. I was thinking about placing in a ICM setup from a mk2 to get spark to the damn beast so I can drive it again. any thought on it creating any issues with the fuel delivery system?

I have done everything according to the bently and I should have spark.. but i dont

I have replaced the Distributor, Ecu, Coil, Ignition Switch, Vss
All grounds are great
I have power to all necessary wires and components

[20thAE JTI]

What about the knock,crank,and cam sensor?

[thedj_edm_jetta]

I knew I was missing something from the list lol

Yes I've also replaced those

[20thAE JTI]

Ecu relay? I fought for about 6 months to get my 1st corrado fired and it turned out to be that relay. I would power to the coil the dizzy it would turn but wouldn't fire. After replacing everything you mentioned, I swapped the relay out for $h!ts and gigs, and it fired rite up.

[thedj_edm_jetta]

Ya man its definitely been a headache... I have replaced that relay as well

I feel like im overseeing something super simple or this rado is haunted. Wiring is something ive always considered myself good at. but this is testing my knowledge

[20thAE JTI]

Is the hall sender switching from positive to negative back to positive? If not you could have a bad hall sender in the dizzy. I've seen it happen with brandnew parts not work at all straight out the box

[thedj_edm_jetta]

thats a good point. I have tried 3 different dizzys though, Each from working corrados.

[thedj_edm_jetta]

the only thing ive come across that caught my attention was the green wire running from the ECU to the coil, has very little voltage on its own when cranking or 1st position on the ignition switch. but when i plug it into the coil it gets 12v, most likely just reading from the switch power on the other side of the coil

[chc-rado]

If you have no spark. It going be few things. You already replace ECM relay. 1st off, does your idle control valve hum and buzz with key on, engine off. If yes, ECM and ISV is good, also when cycle the key, you should hear the fuel pump prime. If don't hear the fuel pump prime and the isv does not hum or buzz, then you wire issue or faulty ECM. Now, if everything passes the basic like good ECM, if have extra dist, rotated with key on, engine off, you will hear the injectors click on-off when rotating the dist. If no. It could the ECM or possible faulty dist or wiring issue. Lastly you should have 12v on the 15+ of coil, that black wire. Green wire goes to 1 position on coil. Make sure those wires aren't mix up. If still no spark from coil. Could be bad coil or coil wire. Lastly, don't use cheap non Bosch dist cap and rotors. This being a 20+ vehicle, you might want check the engine harness if still in good shape. Ohm out the wires from ECM to each components. Bentley bible is your friend.

[thedj_edm_jetta]

^^ Thank you for the input, short simple and easy to follow.
everything is priming correctly with the switch power, I haven't tried rotating the dist and listening for the injectors. I will try that tomorrow. as far as plugs, cap and rotor I only use Bosch.

The black wire on the coil (+15) has 12v
green has minimal volts until connected to (-1) on coil, then its 12v.. the odd part of my diags unless this is normal
Lastly I have pulled the harnes and fixed/tested all the wires for correct voltage, grounds and for resistance

[HavokRuels]

Time for an obd2 vr6 swap


Sent while sitting on my ass VIA my iPad

[thedj_edm_jetta]

Update:
I spent more time than any straight minded person would've spent testing and retesting.. then testing again to get spark on this beast. I eventually decided it was time to stop F-ing around and get this running.

I installed a ICM from an early Mk2 Golf and it fired right up. Car runs perfectly and i have no issues with timing, or fuel delivery.

[xtremevdub]

you didnt metioned if the car was a normal g60 or a California one.