850 T5 mystery

[ynnejcantbe]

Hi guys,
ive just bought a 850 T5 which has a strange running problem, it will suddenly just cut out for no reason. When you restart, it will run for a few seconds and cut out again. After 5-10 mins, it will start and all will be well!
The guy i bought it from said he changed the fuel pump relay, but im not sure which one it is [under fuse box?] to check and i can hear the fuel pump running.

Any ideas?
thanks in advance

[ynnejcantbe]

Thanks, I'll give all tips a try this weekend

[ynnejcantbe]

Hi all, I tried the fuel pump relay, but no luk, turns out to be the fuel pump,
well so far anyway, cheers

[ynnejcantbe]

New fuel pump fitted, but has still cut out twice, any more ideas? cheers

[ynnejcantbe]

Ok now its had new fuel pump relay, pump and idle control valve, but now it wont start! Turns over but wont fire. I've tried dizzy cap and arm and coil and amplifier. What now?????

[ynnejcantbe]

ummm maf?

[ynnejcantbe]

Not sure if it would be crank sensor as it wont start to get warm, but i dont mind trying it, where is the little bugger?

[ynnejcantbe]

You say you have one sideways? how can i get it off you chap?

[ynnejcantbe]

Crank sensor didnt work, ill try unplugging the maf today!

[ynnejcantbe]

Well unplugging the maf made no difference

Is there some sort of starter solenoid? it turns over all day long, but not a hint of even tryin to start.

There seems to be a bit of a run on? noise when you stop turning it over.

Its really doing my swede in now

[ynnejcantbe]

Yep changed cam and crank sensor, nothing

im gonna break it soon lol

[ynnejcantbe]

It lives!!!!!!!!!!!!

Called RAC in the end, and after nearly 2 hours, they diagnosed, possibly, the main relay because the lamda symbol was not displayed on the dash. As they couldnt find said relay, I said I would get one and try it, but as he took his laptop off the top hose, I spotted a grey relay next to the bigger black cooling fan relay. As i pulled it off, a cable snapped off due to corrosion, it is behind the grille I suppose, once remade it started first time, and has been fine ever since.

So I now have a spare rotor arm, dist cap, idle control valve, cam sensor,
crank sensor, coil and amplifier, fuel pump and pump relay.

Basically, look for the lamda light on the dash, if its not there, check main relay!

Cheers for all the ideas anyway guys