Hi all,
I'm new to the Porsche world. I have been deep into Audis for 10 years now and there seem to be a lot of similarities.
Anyway, I purchased a non-running 924S that the previous owner overheated and likely blew the head gasket on.
When I bought the car it was with the knowledge that a twin was placed in my local u-pull junkyard, so I knew I could get a spare engine right away. I've done enough engine swaps though that I wanted to get the existing car to at least run for a couple minutes and drive up the street and back before I start tearing it totally apart and spending $. I did grab the motor from the other car as well as a bunch of other stuff to make this one look better
Interior now all cleaned up and replaced one of the seats:
With that in mind, I am working to get it up and running. The starter spins well and I believe I have fuel. I did a compression test and got 150, 130, 175, 165 so cylinder 2 could be the culprit if there is indeed a blown head gasket
What I don't have is spark. I have replaced a couple of the known failure items, Coil, speed and crank sensors (I DO have tacho bounce when I crank), distributor cap and rotor
I have tested the DME relay and ended up pulling the whole fuse-box from the other car too. So I've tried with both relays (who both test as good)
The next thing I tore into was the DME itself. When I got it loose from the car it rattled - a bit unsettling.
This is what I found when I opened it up:
The R528 Resistor had fallen out of it's home and the R518 had one prong loose.
See below: I then soldered the resistor back in and re-flowed a bunch of other spots.
This didn't solve my problems though
Anyway, I'm stuck. is there any other tests I can/should do before trying a replacement DME?