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Discussion Starter #1
Hi all, just got call from Ian at H&S, they've installed the headers and the backbox but they can't get the car to start!!!

I've asked them to check all the O2 sensor connections, anything else?
 

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o2 sensors should not prevent the car from starting. They must have knocked the crank sensor out of alignment.
 

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Beside the crank sensor.....fuel is one major thing that makes the car not start....may want to check with that
 

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Discussion Starter #4
Definately full of fuel, had 3/4 tank when i dropped it off.
 

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When you say it won't start, do you mean it cranks but wont start, or it won't even crank over?

if it cranks and wont start, then I would think the ECU would throw some sort of code that can lead you in the right direction.

If it won't even turn over, then take a look at the starter wiring.
 

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Dude.

DO NOT post a "HELP!!!" thread, then ignore all responses. Just rude.

A
 

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Ard.......LOL

It's six thirty in the morning here in Old'e England, he's probably still sleeping, since he first posted. It's only idiots like me that work nights.
 

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Ard.......LOL

It's six thirty in the morning here in Old'e England, he's probably still sleeping, since he first posted. It's only idiots like me that work nights.
I suppose... HELP!!! is like, 'Hey, car is down, I'm checking here for you guys to post back'... I guess it isn't that pressing an issue. (There were many hours between posting and bed...)

"Thanks guys for the ideas. I'll get these to H&S and report back next week."

Just crabby tonight I guess. :)

A

PS Can't be 'fuel problems' since the tank was full.... hmm:rolleyes:
 

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Discussion Starter #10
Morning, ard i need my beauty sleep lol, and the first post was as work, then reply soon as i got home then i had a party to go too.

Still on the case this morning, the car will crank over but won't fire. I have suggested to them to get the codes read but as these guys are only an exhaust shop and not a mechanics they're really struggling. They will look at the crank sensor and make sure it hasn't been dislodged.

I agree that it sounds like something has come loose or been disconnected. They work from under the car so apart from the crank sensor anything else in that area that could get disconnected?

I'm assuming they didn't go for joy rides in the car or empty the tank out considering the cost of fuel here! lol
 

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Discussion Starter #11
I've had a lot more people say its probably the crankshaft position sensor, does anyone know where it is located? I can't find it on Real OEM
 

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be interesting to hear what the cause was. Am considering headers myself with my eisenmann and supersprint set-up.

Be interesting to hear how you get on with the H&S set-up!

cheers
 

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Discussion Starter #13
Update from H&S they've got a guy from the local BMW place in to read the codes. They suspect it could be the immobiliser as they disconnect the battery when working on the car.

I've been waiting 2 weeks now lol and i had my hopes up when they said it would be ready today then last thing yesterday they disappoint me with this.

I'll post some video's up if i can or get time.
 

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Discussion Starter #14
All sorted, they'd cut a wire during the install which the bmw guy fixed so its all working now, off to pick it up!

Thanks for all the help guys!
 

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i would be surprised if it was the immobiliser to be honest. Batteries have gone flat on my M5 and also my old 530i and have been disconnected etc...and they have never had a problem with the immobiliser from it.

It could be an unrelated problem i suppose. Bit disappointing that the BMW specialist has only come in after two weeks to see the car.

Poor customer service and relations maybe from H&S?

cheers
 

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All sorted, they'd cut a wire during the install which the bmw guy fixed so its all working now, off to pick it up!

Thanks for all the help guys!
Excellent! Posted my preivous comment whilst this one was being posted it seems!

Enjoy the new soundtrack, and post some pics and videos too:1:

cheers
 

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Discussion Starter #17
I've got it back and been driving hard through tunnels ALL day!! Its music at high rpm's but it sounds like a modded scooby when bumbling around at 1.5 to 2k rpm...and that's with them silencing the x-pipe and adding silencing to the dummy rear boxes.
 

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Which wire did they cut? It is very hard to cut a wire under the M5.... I would imaging it was the Crank sensor which is on the transmission bellhousing very close to the passengerside header. i guess it is possible they did damage to the wire when they were either removing the old headers or installing the new headers. either way I would be leary of this shop as something like that shouldnt have happend.


Ryan

I've got it back and been driving hard through tunnels ALL day!! Its music at high rpm's but it sounds like a modded scooby when bumbling around at 1.5 to 2k rpm...and that's with them silencing the x-pipe and adding silencing to the dummy rear boxes.
 

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either way I would be leary of this shop as something like that shouldnt have happend.
Mistakes can happen even with fully trained BMW mechanics.....ouich

You should see some of the cars Hayward & Scott have worked on (I've had a good mosey around their workshop)....

Case Studies
 

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Discussion Starter #20
I agree Hayward and Scott work on some nice machinery and there quality is excellent.

Just read the codes using my Peake reader. It had thrown a crankshaft sensor error so they must have damaged the cable for that. Which i hear is pretty easy to do.

Oh while we were there picking it up they had an E63 AMG there that had a full straight through system i.e manifolds then straight out to the tips!! no silencers or cats!!!

Ian started the thing and revved it while we were inspecting my car and we almost needed a change of underwear!!! Oh my god was it loud!!! The owner must be completely loopy.
 
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