So... the inevitable 'HDi won't start' thread...

[cully]

For the reference, if you had mtdi'ed it and put the shitty ecu in the bin, it would have started easily as long as the cuss will motor, it will fire

lies it wouldnt have on the starter and thats all fooby knows..key turn start !
the battery was fudged untill Fooby was ass rapped @ Halfrauds

[Fooby]

yeah but it was still turning over, surely if it turns then it should fecking start.

This EUC needs chucking in the bin

[andywhy]

ECU's should come with buck/boost converters to run the damn things under low battery situations. If it can crank, I'm sure it can be made so it can shove a few amps into the ECU as well... I've seen many situations where modern cars won't start despite having enough to crank. Give me mech derv any day. My POS VW almost didn't start for the same reason this morning I reckon. It was slow cranking but took 3x as many turns to fire. It was only -2! My 306 managed to fire every time first turn even at -15!

[Toms306]

I'm pretty sure it won't allow fuel in until its turning over fast enough (450rpm or something) so its not due to the ECU not having enough voltage afaik, just the fact the starter hasn't got enough power to turn it quick enough.

[darrenjlobb]

A diesel will fire from bugger all motoring, the ecu just needs tonnes of power / injector drivers need a wack of power, espicaly on these style ones...

Ive managed to start an escort derv before on a battery so flat i had to pull 2 glow plugs to get it to motor fast enough, let it run on 2 to charge the battery, and put them back in and fire up obviously that was mech injection

[Mr Whippy]

Hehe...

The joys of the mechanical stuff. I always think it's good to have one for the day the apocalypse comes. EMP blast, War of the Worlds alien attack... just roll your XUD off and run it on veg oil... sorted

Don't need any electrics hehe.

Dave

[Jukie88]

Hmmm I wiggled the brown relay on mine and it started but it the issue again do may change the battery as its been in the car for a good 3/4 years and it's not a particularly good one so it could be just a power prob not enough getting to all the right components ??

[Fooby]

/ponders XUD Estate...

[Poodle]

Still having problems?

[Fooby]

na, new battery sorted it out. Piece of shit

[Ed Doe]

/ponders XUD Estate...

Fooby you can't change a wishbone without getting broken, having a moan and then sittting in your car for 4hours sulking.... Start a project thread, this should be funny!

[Scott]

You forgot to mention that the wishbone didn't even get changed

[Ed Doe]

And that I spent the half hour under the car in the pics pouring rain refitting the old one so he could drive it home!

[Ruan]

It's not so much the crank speed or amperage to the ECU, its due to the fact that the fuel pressure doesn't come up enough when its cranking that slow... It needs a certain amount of pressure to start opening the injectors otherwise it grumps and says there's not enough rail pressure... Sadly its one of the first signs of a worn HP pump...

[Ed Doe]

BMW fuel pump, uprated Rail pressure sensor & TB Stage 2map. Oh and another c-c-c-c-c-c-c-c-c-c-l-l-l-l-l-l-l-l-l-u-u-u-u-u-u-u-u-u-u-u-t-t-t-t-t-c-c-c-c-h-h-h-h-h-h-h-hh--hh--hh-.......

[Scott]

BMW fuel pump, uprated Rail pressure sensor & TB Stage 2map. Oh and another c-c-c-c-c-c-c-c-c-c-l-l-l-l-l-l-l-l-l-u-u-u-u-u-u-u-u-u-u-u-t-t-t-t-t-c-c-c-c-h-h-h-h-h-h-h-hh--hh--hh-.......

Scott likes this.

[Poodle]

Man, you'd have a right old time with an XUD, if nothing else you really would have no excuse for taking it to a garage - they can be consistently fixed by a monkey with a sledgehammer.

[Jukie88]

Ok I've given up on the hdi today it's had a new battery new Injectors new fuels pumps all wiring checked and fine immobiliser is ok too wiggled the relay behind Ecu which made it start last time but this this time nothing !!!!!! I've given up should I replace the relay too ??? It's costing me a fortune

[Poodle]

Haven't you replaced that relay yet? One of the easiest/cheapest things to replace, would be my first port of call. I'll take another look at your thread if you dig it out and update it for us, will try to work out what's happening for you.

[Jukie88]

Not yet lol you've mentioned it to ne many of a time I just wiggled it and boom it was ok unfortunately I replaced everything else before doing that :-( but now wiggling doesn't work so think it's caput :-( what's annoying is it catches then immediately goes back to turning over :-(

[Poodle]

That is odd... Have you managed to get it on diagnostics yet?

[Jukie88]

Not yet got it Cooke in for the 2nd jan for diagnostics :-) hopefully thatl shed some light

[Jukie88]

YESSSSS after two years of stop start motoring it turned out to be a fuel pump relay !!!!!!! Problem solve XD hopefully. I more temperamental starting !!!!!! Happy days !!!! B

[Poodle]

Haha glad you got it sorted matey.







*cough* rep *cough*

[Jukie88]

I know I need to rep you many many times for your help but how the hell to I do it on tapatalk !!!! also I'm assuming the fuel pump relay is that one behind the Ecu ??

[Poodle]

Hahah no worries, i can't use the forum on my phone either. Yeah that's the one fella, the so-called brown relay.

[Jukie88]

All the ball ache for the sake of 15 quid lol lesson learned !!!