Disco 2 - no start

Quote:

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Originally Posted by sierrafery

Did you try to rule out the pump and main relays though, cos if the pump runs only with bypassed relay or the relay is fubar'd or it doesnt get feed on the coil from main relay so swap relays R1(pump) with R3(headlamp wash) and R9(main) with R8(heated screen) just to rule them out, also unplug and bridge pins in the inertia switch's connector to rule that out too... the crank sensor won't stop the pump running

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Beat me to it, I was going to say try the inertia switch
Cheers, Mario

PS do you have a Nanocom? if you do try going into to BCU and select Learn Security. You never know there might of been a glitch and it's shutting you out from starting.
When I replaced an ECU, it would crank but not start. After learn security it started.

pps Re your original rough running, did you pull the plugs to see if they were fouled, crook O2 sensors can cause fueling probs also.

Thought inertia switch had been mentioned. Yes, definitely bridge it.

OK - my mechanic had a win. Body Control Unit - swapped over and now engine fires and runs fine...

It may be not a common fault...

Cheers

Common enough , that's why I suggested it , have done a couple in the last two years, luckily I keep a couple from wrecks to test with

Thanks mate good call. Presumably a dodgy circuit caused the 2 stalls I experienced also - interrupted signal for ignition?

Anyway in addition to firing up and getting on with it, does it need some sort of re-programming?

Cheers

I also doubt my 1668 code from December 2015 is unrelated...

http://www.aulro.com/afvb/discovery-...de-1668-a.html

Cheers

That's disappointing and worrying.

Mate it's a 14 year old computer tower on wheels...pcb boards fail in computers at work a lot sooner...and they are subject to less stress. So it's expected to happen some time. What is worrying however is that it could happen to any 4wd over about 10 years of age with a computer at any time in the middle of butt **** and you've got a pretty face...

Cheers

They supposedly need syncing to the car on installation,,
after that you're good to go.

I havent heard of any needing replacement due to failure before yours,,,

would be interesting to put the old one back in and re-sync it,, just curious,,;)

dont you love the lock-in plug system!!:cool:

I'm not sure it should have started and ran with a new BCU without recoding the key fobs etc...the mechanic might have programmed it I don't know.

Also wouldn't the BCU hold the mileage of the vehicle it came from?

Cheers