Righto..............
Me and an oppo were asked to fit a Tdi wiring loom for someone by a garage. No problems, have previously done another AFN with no dramas and have done 5 Gti ones between us so no real hassles doing it. One of SYNCROANDYS looms, as per usual , quality bit of kit
Have just had a week off and spoke to the customer today who told me he still didnt have the van back due to wiring issues -namely the immobiliser.
It is a later Passat loom fitted with the earlier 'black box' immobiliser. From doing the other AFN i remember it still showed a immobiliser fault code for a while after it was running (after continuosly clearing it might i add). Why? i dont know! Maybe Mk4s with immobiliser in clocks ECU recognises a different immobiliser and has a hissy fit but still works. Apparently the code has now gone for good
I know 100000001% the K/W line is wired in correctly before it was attempted to be started. just to support my confidence VAGCOM works so the integirty of the wiring is proved to be good. Apparently my oppo spent a while testing earth/lives etc just to be 100000002% sure while i was away!
With the immobiliser key/chip removed the engine *should* briefly fire for 1/2 second before cutting out. I know it still shows an immobiliser fault on vagcom but think this is a red herring as the other AFN ran with same fault initially showing (as previous - compatability issue?) I know SYNCROANDY tests all his looms so dont have any worries about that side of it.
getting to the point
My oppo tells me 2 batteries were flattened trying to start it. The engine is installed with a kennedy adapter kit BUT is still using the petrol starter motor from a WBX. Oppo tells me at a rough guess he said the engine was turning at half speed on a fresh battery. Im no rocket scientist but that doesnt sound good on a compression engine.
Is it possible that the actual/only reason it is not starting is down to the WBX starter not being man enough to start an AFN?
As previous, all wiring checked out ok, not attempting to fire for half a second as per what commonly happens with immobiliser faults and the fault code is a possible compatability issue as have seen it before on running Tdis?
Anyone?
Constructive/helpful answers only please!
PS - taken from Ross-tech
"On most models using conventional keys, the Engine will still start but cut out after 1-3 Seconds if an Immobilizer related Problem is the cause. If you are NOT experiencing this behavior (e.g. Instrument Cluster powers up, and engine cranks but doesn't fire at all or engine won't crank) this is likely NOT Immobilizer related."
and yep, its petrol to diesel conversion.