[Mk2] [Turbo] Fuse Help

[Playbunny]

I was at Brands Hatch yesterday and was on and off track for most of the afternoon.

As I come into one of the corners I lost all eletrical power and rolled onto the grass.

I had not ignition power at all, no windows, no wipers. All my lighs still worked and the light for my door open was ok.

Got it back into the pits and found that he AM2 fuse (7.5amp) had blown. Replaced the fuse, turned the ignition on and it blew stright away.

Im very lost when it comes to his sort of thing and dont really know what circuit this fuse is on.


Please help if you can or shed some light


Thank you

[toxo]

AM2 is the starter relay I think (and possibly ECU/EFI?). Weird for it to blow once the car is running unless you've melted your fusebox...

Have a read of http://www.imoc.co.uk/forums/viewtopic. ... hlight=am2

[Playbunny]

Thank you for above info....all helps but there is no mention of windows


Right even more confused........

Had a look at it tonight

Put new fuse in turned ignition on.......fuse ok

Crank car over, turned 1-2 times...... fuse blew

(New fuse) Took starter relay out, go to turn over fuse ok, relay back in, turn over fuse blew.

(New Fuse) Turn ignition on....use eletric windows..fuse blows stright away

(New Fuse) Turn ignition on....use wipers..fuse blows....

Everytime you draw power it blows

Could it be a relay??

[toxo]

If you take the starter relay out and turn the ignition on, can you use your wipers / windows? If so, then it's most likely either that relay or the starter wiring. Unfortunately this sounds very much like broken wiring, so you have a lot of trial and error (and blowing fuses) ahead

[Playbunny]

If I leave the starter relay out and use windows it blows.

Im going to try and take both wiper and window fuses out as I do belive the amp on them are higher. If I crank it and the am2 fuse is ok then it narrows it. If it blows, then going to test the 3 main relays in the engine bay (Ignition Main, EFI And COR)

What has crossed my mine is the this....might be very way off mark.
The car got very very hot as was on track about 2 half hours. On for about 20-25min and off for about 10-15. The turbo would of got very hot. Just below the Turbo is the starter motor. If i melted/damaged the wires or even the starter motor its self could this cause the problems im getting???

[toxo]

Yes. The OP in that thread I linked to was suffering due to a sensor falling apart, if you've melted loom then it's quite possible it would cause this. You'll need to have a good poke about in the engine bay I think!

Good luck

Edit: Wait, that's wrong. If you've taken the starter relay out and it still has this problem then it's not related to the starter wiring as that will never receive any current. Very possible you have melted something else powered through that fuse though (efi, cold start, etc)

[Playbunny]

Thank you Im going to need it I feel......I know what il be doing this weekend

[Playbunny]

Well as I say im going to rule out the windows and wipers. Its really thrown me that these also cause the fuse to go

[Playbunny]

Silly question, but where is the best place tolook for these as I dont know.

Cold start etc etc