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Scenic not starting (172 Engine)



So to set the scene a bit, the trusty old 1.6 engine in my mum's Scenic snapped a cambelt and took all the valves with it, so using good old logic and a bit of inspiration from the Kangoo and Mk1 projects I swapped in an F4R from a ph1 172, there's only 3 other Scenics that I know of with this powerplant in it so figured it'd be something a bit different :cool:

Anyways, I've used the Scenic loom with all the relevant wiring from the ph1 loom I had (coilpacks, vvt dephaser solenoid etc..) spliced in with it, changed all the pins on the Scenics ecu connector to match the ph1 connector and then double checked that all the wires were correct. So, comes to starting for the first time and the engine won't fire, turns out out there isn't spark but there is fuel, as proved by it shooting out the connector to the fuel rail when I pulled it off to check. Searching on here pointed to either the fuel pump relay, tdc sensor or a bad ground preventing the spark, however changing the relay and sensor (new blue renault item) and double checking the grounds for continuity proved unsuccessful. The relay itself does click when I turn the ignition on and I can hear the fuel pump priming also, plus I'm certain there's no break in the wiring itself due to checking it over and over. Oh and the immobiliser light goes solid for about 2 seconds after turning the ignition on then goes out so I'm guessing it's not to do with that.

Pretty much stuck for any ideas, would ideally like to get this on the road soon as my other project car's waiting to get started on (call me impatient :rasp:) any thoughts and ideas would be very much appreciated
 
You mean have I deleted the immobiliser code? Thought's crossed my mind but both ecus are sirius 32n so I just assumed the immobiliser would match up
 
Right then suppose that makes sense, ph1s have a multi timer unit instead of a uch same as the scenic so that was where my thought process came from. Any places you know of that can do ecu virginising?
 
That's good then, only 5 minutes up the road from them! Funnily enough I was in there the other day having a chat with Paul about my ecu but this never came up. Wouldn't happen to have any idea on cost?
 
I'll have to give them a ring at some point, but how come the immobiliser light is coming on and off as it should if it doesn't match? Or am I getting confused with something?
 
So to update, I bought another ph1 ecu with an emulator installed to completely remove the immobiliser, come to starting it and once again it just turns over. Also the fuel pump relay isn't coming on with the ignition now either, wiring in a permanent ground didn't work. Any ideas before I push it off a cliff?
 
Had a go at that to no avail, even tried bridging the inertia switch, swapping the fuel pump relay for a spare Volvo relay and rechecked all the wiring but still no luck :mad:
 
Fuel pump only primes now when I manually ground the relay, same with both ecus which is strange since like the say there's no breaks in the wiring
 
Still just turns over, I'm considering getting a ph1 loom as there's a bloke selling both the engine and dashboard looms since they're joined by that big black connector, but there again I've spent so much trying to get it running already I'm having second thoughts
 


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