No power getting to fuel pump!!!
#1
No power getting to fuel pump!!!
Hi anybody any ideas
Clasic 1994 wrx import
On a track day at Olton Park yesterday just exiting shell oils corner
when I had a total loss of power and car just stopped session was red flagged and I was recovered to the pits unable to locate problem so had to get recovery to home after checking things out today I have found that their
Is no power getting to the fuel pump?
Tried to obvious no fuses blown and everything else seems to be getting power
Somebody suggested the car might have a fuel pump cut off inertia switch
But nobody has been able to confirm this.
Any help would be greatly appreciated
Many thanks
Tony.
Clasic 1994 wrx import
On a track day at Olton Park yesterday just exiting shell oils corner
when I had a total loss of power and car just stopped session was red flagged and I was recovered to the pits unable to locate problem so had to get recovery to home after checking things out today I have found that their
Is no power getting to the fuel pump?
Tried to obvious no fuses blown and everything else seems to be getting power
Somebody suggested the car might have a fuel pump cut off inertia switch
But nobody has been able to confirm this.
Any help would be greatly appreciated
Many thanks
Tony.
#4
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When you where checking the power supply to the fuel pump, did you have someone else operating the ignition switch?
Because it only allows power for ~2 seconds after turning the ignition (when the engine isn't turning).
Go to this site and download the pre97 manual. It's for a Uk car but the basics are the same. There's alot of usefull info in it (diagnostic procedures etc)
http://www.jimclarkeracing.co.uk/sco...7/premy97.html
Because it only allows power for ~2 seconds after turning the ignition (when the engine isn't turning).
Go to this site and download the pre97 manual. It's for a Uk car but the basics are the same. There's alot of usefull info in it (diagnostic procedures etc)
http://www.jimclarkeracing.co.uk/sco...7/premy97.html
#5
Hi Guys
PROBLEM SORTED.
Id likes to thank all the people who posted advice or help
But very special thanks go to DUNK, TICKY & NORMSKI
Who all provided access to wiring diagrams which provided
The information to locate the problem
As reported earlier in the post the problem was no power getting
To the fuel pump, the first and most obvious thing was checked
Which was all the fuses, but no fuses or relays in either of the
Fuse boxes were marked as being for the fuel pump and all appeared
To be intact but this turned out not to be the case.
After following the circuit back from the fuel pump though the
Fuel pump relay to the power supply routing table MB-2 SBF-2.
SBF-2 turned out to be a 30amp fuse in the under bonnet fuse
Box, this fuse doesn’t look like an ordinary fuse. it looks more
Like a miniature relay there are two in total side by side green
And have a clear plastic top.
On looking very closely though the clear plastic top I could just
See a ½ mm gap in the fuse link.
You can imagine the words that came out of my mouth at this time
after paying For a recovery truck from oulton park to Oldham
and spending Hours trying to find this fault.
WE LIVE AND LEARN
Hope this information might help somebody else out in the future.
Again many thanks to you all.
Tony.
PROBLEM SORTED.
Id likes to thank all the people who posted advice or help
But very special thanks go to DUNK, TICKY & NORMSKI
Who all provided access to wiring diagrams which provided
The information to locate the problem
As reported earlier in the post the problem was no power getting
To the fuel pump, the first and most obvious thing was checked
Which was all the fuses, but no fuses or relays in either of the
Fuse boxes were marked as being for the fuel pump and all appeared
To be intact but this turned out not to be the case.
After following the circuit back from the fuel pump though the
Fuel pump relay to the power supply routing table MB-2 SBF-2.
SBF-2 turned out to be a 30amp fuse in the under bonnet fuse
Box, this fuse doesn’t look like an ordinary fuse. it looks more
Like a miniature relay there are two in total side by side green
And have a clear plastic top.
On looking very closely though the clear plastic top I could just
See a ½ mm gap in the fuse link.
You can imagine the words that came out of my mouth at this time
after paying For a recovery truck from oulton park to Oldham
and spending Hours trying to find this fault.
WE LIVE AND LEARN
Hope this information might help somebody else out in the future.
Again many thanks to you all.
Tony.
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25 September 2015 02:35 PM