06-24-2013, 03:01 PM
Join Date: Sep 2011
Total Cats: 0
vag 1.8t coil on plug overheating
I recently installed vag 1.8t coil on plugs to my 1992 mk1 1.6 turbo. I followed Braineack's how to guide, but I was getting no spark at all. So I grounded the tach of all of the coils to the head as I didn't think the signal was grounding properly.
I also have no rpm on the tacho, but I do have a reading in MS. Though I learnt that on my car the tacho is ECU driven.
The engine then fired straight away and ran well for 15 minutes until it started running on 3 cylinders and then cut out completely. After letting the engine cool down it ran again fine, until it started running on 3 cylinders again.
Black/white and yellow/blue are bridged in the hollowed ignitor as I believe this is the signal from the ECU and the signal to the tacho.
I originally had a 1k resistor between 12v and these two, but removed it on the advice of Reverent. Either way I have no rpm readout in the tacho and the coils are overheating or something!
Is there anyone out there running these Coil on plugs and could there be something I have forgotten to change in Tunerstudio?
msq is attached.
Any help much appreciated!