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Crazy fuel gauge ...again by knarfluna
Started on: 05-25-2015 06:16 PM
Replies: 1 (115 views)
Last post by: Gall757 on 05-26-2015 09:42 AM
knarfluna
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Report this Post05-25-2015 06:16 PM Click Here to See the Profile for knarflunaClick Here to Email knarflunaSend a Private Message to knarflunaEdit/Delete MessageReply w/QuoteDirect Link to This Post
for testing purposes, here what Ive done

on the sending unit connector

Blk, Purple, grey


on the firewall connector

Blk, pink, brown
on the sender side...I connector a meter to:

Blk/Purple= about 19-20ohms ( I believe my tank is a lil less than 1/4 full)


on the firewall connector side I connected to:

continuity(ohms)
black to ground strap= positive
pink to ground= OL
brown to ground=OL

black to pink=positive
black to brown=OL
pink to brown=OL


with ignition on

firewall connector:

black to pink=8.5 vdc


I think this may be my problem....hope this makes sense. I just completed a swap and everything work and runs well, but now I get my fuel gauge being erratic. and now it pegged to full.

what can I do to test both sender and gauge, I think Ive tested send with the ohms reading, but whats scratching my head is the 8.5V going to the sending unit...shouldn't it be 12Vdc?

I also read about ground the connector on the firewall and needle should read empty...any help

Thanks
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Gall757
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Report this Post05-26-2015 09:42 AM Click Here to See the Profile for Gall757Send a Private Message to Gall757Edit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by knarfluna:

....hope this makes sense.

Thanks


It does not to me, but if you see the fuel gauge pegged full, you have infinite resistance...a break in the circuit somewhere.
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