[Vwdiesel] '90 Jetta fusebox
swright at zuiko.sls.bc.ca
Fri May 26 23:16:43 EDT 2006
Sorry for the non-diesel question, but I'm hoping somewhere here might
have seen this problem before...
A friend bought a '90 gas Jetta recently, and soon after it starting having
problems which sounded like fuel pump - dying out, hard starting, etc. Then
it just died, and wouldn't start.
It had a really ugly alarm system hacked into it, so electrical was my first
guess. I didn't get a chance to look at it until tonight, after her brother
removed the alarm hack job, and figured it was spark. But I still suspected
fuel, so I checked for fuel at the rail, and there was no pressure. No power
at the pump in the tank or the pressure tank. Bypassed the relay. Still no
power. Hmm. This is where it gets strange. As I read it, power from the 87
on the relay should go through fuse 18 and then onto the fuel pumps. But
there is no continuity between the relay 87 and the backside of the fuse
block. So I applied power directly to the fuel pump harness coming off the
fuse block, and the pumps run. So unless I'm reading the wiring wrong, it
appears the fuse block is at fault. I've heard of them being flaky from
corrosion/water damage, but not failing altogether like this. I've advised her
to pickup a used fuse block, since although I have 3 of them, none will fit - I
guess they changed around '89 or so.
Any other ideas appreciated... thanks.
'88 Westy 1.6TD 5 speed
'85 Jetta Diesel 1.6NA
More information about the Vwdiesel