Battery Terminal In Engine bay prob.

[buster]

Hi all,
I had the 3 wires connected to the battery terminal in the engine bay.I should have had the large wire on the big round terminal(stump) but as i haven't got a new clamp i just connected all 3 to the smaller connection higher up on the terminal (10 mm nut i think).
There was power there and all was fine,i cranked the engine over and after a couple of seconds nothing.No power there now.
So i just connected all 3 to the big round stump with a pair of mole grips and its all working again appart from the fact that that smaller terminal which is supposed to hold the 2 smaller wires is now dead.

Any ideas ??

This is on my s50 engine but im not sure it will make a differance.
Any help please,
thanks
andy

[ian332isport]

Andy,

You have popped a fuse.

There's a 50A fuse in the smaller wire that runs from the battery in the boot to the connection under the bonnet. I'm not actually sure exactly where it's located in the car, but somewhere towards the back I believe. Have a look under the plastic trunking that covers the battery cable on the right hand side of the boot. There's a good chance it's under there.

That smaller connection is there to provide power to the injection electronics. When you tried to pull enough current to crank the engine it simply popped the fuse.

You need BMW part 12 41 1 706 111 - approx £4.70

Cheers,

Ian.

[buster]

Thanks Ian,i was hoping you'd see this post.
If i can't locate it can i just connect them all to the main Clamp ?

[ian332isport]

Thanks Ian,i was hoping you'd see this post.
If i can't locate it can i just connect them all to the main Clamp ?

Hi Andy,

I guess that would work okay, but you would be pulling that little bit more current down the main cable. Probably not enough to be a problem, but you never know. I'm not sure why BMW added the extra cable, but I assume they had their reasons. It may be due to voltage drop when cranking.

Cheers,

Ian.

[buster]

yeah its probably the voltage drop during cranking,it says in the bently manual if i connect them all to the main post then can result in a no start condition during low outside temperatures.
Thanks Ian ,i'll just order one and try and find the little sucker !

cheers
andy

[gcorky]

all done buster???ya lucky man

[buster]

all done buster???ya lucky man

Nearly mate, nearly !!
I think the exhaust manifolds are going to take a bit of work,pipes go where other things need to be !!

[glenn]

did you manage to get a 50amp fuse andy?
i've got one here, yours if you need it mate.

[buster]

No i haven't Glenn,Where did you find it ? I haven't looked yet but Ian thinks its at the back somewhere,on nights this week so i'll take a look in the morning when i finish work.

[glenn]

mine was on the e39 loom mate.
i kept it 'cos you never know when somebody will need one!
if you pm me your address, i'll pop it in an envelope for you.

[buster]

cheers Glenn,very kind of you.
PM sent

[glenn]

i've missed todays post, andy,
but it'll be in tomorrows post, so you should get it saturday morning

[buster]

Thanks very much Glenn,i owe you one

cheers
andy

[buster]

Thanks Glenn ,got the fuse the other day,i've just fitted it tonight.
After all that i dont think i needed to though because i think i wired the fuse box live feeds into the e36 loom therefore i only need the main e36 battery terminal on the main + post.
I think thats how Ian did his , Did you Ian ?

cheers
andy

[glenn]

i was keeping an eye on this thread, to make sure you got it

[ian332isport]

Thanks Glenn ,got the fuse the other day,i've just fitted it tonight.
After all that i dont think i needed to though because i think i wired the fuse box live feeds into the e36 loom therefore i only need the main e36 battery terminal on the main + post.
I think thats how Ian did his , Did you Ian ?

cheers
andy

Hi Andy,

I did wire the fuse box live feed into the E36 engine loom, but this does not remove the requirement for using the 50A fused circuit from the battery.

Coming out of the E36 engine harness, you should have the big fat beefy cable that goes to the main battery post on the bulkhead. You should also have a thinner wire that needs connecting to the smaller terminal on the bulkhead battery connector (the 50A fuse circuit).

Cheers,

Ian.

[buster]

Coming out of the E36 engine harness, you should have the big fat beefy cable that goes to the main battery post on the bulkhead. You should also have a thinner wire that needs connecting to the smaller terminal on the bulkhead battery connector (the 50A fuse circuit).

Cheers,

Ian.

Yeah thanks Ian ,thats what mines like,been a while so i couldn't remember until i checked just now.Need to get a battery clamp now so i dont blow it again.

Fired it up tonight for the first time,just clamped the live on with some mole grips.It fired first turn of the key ,no problems
I need a 5bar fuel pump now.

cheers
andy

[glenn]

I need a 5bar fuel pump now.

i priced one up at fab's the other week andy,
iirc it was 60 notes mate

[buster]

nice one, £60 aint to bad,i'll give them a buzz.

thanks glenn,

andy

[stevetigger]

I need a 5bar fuel pump now.

i priced one up at fab's the other week andy,
iirc it was 60 notes mate

Never crossed my mind.......O/T a little bit, but will my fuel pump be OK with my M50?

[ian332isport]

will my fuel pump be OK with my M50?

Yes it will be fine.

You only need the 5Bar pump on the S50B32 (M3 Evo) and I believe Glenn needed one for his V8 conversion. Both of these engines run a higher pressure fuel regulator.

Ian.

[stevetigger]

Cool, its just my Convertible was a skinny 1.8! to start with!