Non Starting ABF since engine out, loom replacement

[hardmonkeys]

Thanks mate. I hope to get started at some Point today, had to take my MK5 into main dealer today, was only going to be a wait job, but they are having problems, so they've given me a loan car to get back home, now I'm in two minds wherever to get started or not, in case they call me to go pick up the motor.

[hardmonkeys]

Fitted it, still nothing, not even attempting to start now. I'm off to pick up my mk5 now, so will have another look in a while if this rain holds off 

[hardmonkeys]

Went out and scanned the car, no faults, but under measuring block, it says it's -40c lol

New coolant temp sensor?

[lemski]

It would be chucking in as much fuel as possible at that so could well be. Does it still run with your foot on the pedal or doesnt even attempt to run now

[hardmonkeys]

Nothing at all now.

[LR5V]

when you say replaced the loom - is that the engine loom?
Are you sure you had found the cause of the burn out and any other damage?

One area of loom on the ABF engine that really gets abuse is the section going to the throttle position sensor -that whole branch of loom gets baked by the exhaust manifold below, all the insulation just falls off over time leaving bare wire.
I dont think this fault would stop the engine starting, but definitely causes rough running.

have you bought a really cheap crank sensor - heard of some being DOA

I realise you had the engine running for a few months, but have to ask how you overcome the immobiliser?

[hardmonkeys]

Hi, the reason for burn out was, i put the negative batt cable on the back of the starter aswell as the positive, it's a miracle it ran so long really, symptoms were a slow crank, like the batt was flat, then one day the loom started smoking, there was some damage to the coil, that I replaced bit still nothing as yet. I overcame the immobiliser by removing from the donor car along with the ecu it was programmed to, I have a project thread on here too, I've documented most things on there, with some pictures too, The temp sensor on VAGCOM is reading -40 at the min, I've got a new sensor on the way, I'm hoping a new sensor will give the correct info to the ECU, if that don't work, I'm maybe thinking the loom is a duffer! Really hope not,

[lemski]

Didnt you remove the new loom from another donner car which was running

[hardmonkeys]

Not this one no, the loom from the donor was the one I fried. I found someone selling another loom, so that's the one that's in now...i checked the voltage of the connection to the coil, showing 11.56v, pretty good? But no spark from coil, that's 2 I've  tried now

[lemski]

Coil to distributer? Have you checked the wiring to the hall sender. Or the hall sender wiring.in the dizzy. Dependent on what dizzy you have to how the wiring should look inside