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Welcome to the CJ-3B Bulletin Board, the forum of The CJ3B Page. Everyone is invited to view the postings here, but you must register as a member in order to post messages. The moderator reserves the right to remove items posted. Items may be archived on the Tech Tips page. If you post a problem, please follow up by posting the solution when it is found, as it will likely be useful to other readers. For bulletin boards and e-mail lists covering other Jeep models, see the bottom of this page.

 

 

 fuel guage
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birdhunter789
Posted: May 7 2012, 06:08 PM


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Joined: 26-August 10
My gas guage quit on my 3b the power strip is hot but pulses.Is this correct? help please
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oldtime
Posted: May 7 2012, 06:54 PM


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Everyone please fill in your SIGNATURE with basic jeep detail.

I suppose your talking about a cluster gauge speedometer ?
Was it recently working correctly ?


--------------------
1953 TRANS-VINTAGE CJ-3B / AC 4693 fuel pump / YF 938 SD / Hurricane / 9-1/4" Auburn clutch / T90-C / 2.46 ratio D-18 / Warn O.D. / 5.375 final drive / Powr Lok Front + Rear / Dualmatic drive flanges / deluxe Koenig half cab / 12 volt generator
2nd full re-build using the best from all vintages of CJ-3B

1962 OPTIONAL-STOCK CJ-3B / Warn O.D. / Tigertop / Transport yellow (orange)
Currently serving as my one and only DAILY DRIVER

St Louis
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birdhunter789
Posted: May 7 2012, 08:27 PM


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Group: Members
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Joined: 26-August 10
yes it was working recently. The temp guage still works they both run from the same power,when you turn the key on the temp guage moves up to cold ,it's all original never been messed with
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oldtime
Posted: May 8 2012, 07:42 PM


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Group: Co-Admin
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Member No.: 3
Joined: 12-July 08
It could be a bad ground, a bad indicator gauge, or tank unit gauge (sender).
So obviously you first need to check for faulty wiring.
http://z4.invisionfree.com/CJ3B_Bulletin_B...?showtopic=3808

Computer problems please SEARCH wiring harness


--------------------
1953 TRANS-VINTAGE CJ-3B / AC 4693 fuel pump / YF 938 SD / Hurricane / 9-1/4" Auburn clutch / T90-C / 2.46 ratio D-18 / Warn O.D. / 5.375 final drive / Powr Lok Front + Rear / Dualmatic drive flanges / deluxe Koenig half cab / 12 volt generator
2nd full re-build using the best from all vintages of CJ-3B

1962 OPTIONAL-STOCK CJ-3B / Warn O.D. / Tigertop / Transport yellow (orange)
Currently serving as my one and only DAILY DRIVER

St Louis
Top
birdhunter789
Posted: May 8 2012, 07:55 PM


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Group: Members
Posts: 53
Member No.: 915
Joined: 26-August 10
If the guage is good shouldn't you be able to ground and it will go all the way to full?I know there is hot to the guage,I know i grounded it good and nothing with the guage it just never moves
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oldtime
Posted: May 9 2012, 09:09 AM


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Group: Co-Admin
Posts: 3,555
Member No.: 3
Joined: 12-July 08
Then the only thing left is test or replace the fuel gauge and tank unit gauge (sender).
It's most likely one or the other.
The speedometer cluster assembly must be dissassmbled to access the fuel gauge.
The tank unit gauge is much easier to access.
Do you have a multimeter to test OHM's of resistance ?


--------------------
1953 TRANS-VINTAGE CJ-3B / AC 4693 fuel pump / YF 938 SD / Hurricane / 9-1/4" Auburn clutch / T90-C / 2.46 ratio D-18 / Warn O.D. / 5.375 final drive / Powr Lok Front + Rear / Dualmatic drive flanges / deluxe Koenig half cab / 12 volt generator
2nd full re-build using the best from all vintages of CJ-3B

1962 OPTIONAL-STOCK CJ-3B / Warn O.D. / Tigertop / Transport yellow (orange)
Currently serving as my one and only DAILY DRIVER

St Louis
Top
jyotin
Posted: May 9 2012, 05:44 PM


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Group: Members
Posts: 593
Member No.: 29
Joined: 18-October 08
Many times when the sender goes partially bad it will have portions of the "travel" of the float that don't work at all and portions of the "travel" that do work.

If it hasn't been 'fooled' with I'd first suspect the sender. Even if it had been 'fooled' around with I'd still suspect the sender. There are several kinds of senders, so count the number of screw holes that hold it on. That should get you in the right place.

Grounds.... There is no substitute for good grounds. If I was going to replace the sender I'd first make absolutely, absolutely sure that the gauge itself is grounded well, and that the fuel tank is grounded well. Don't trust the fuel lines to ground the tank -- I usually connect a wire from one of the sender screws to a nice good ground on the body tub or frame.

"I think I'll just try it out before I install the sender.." Don't do it!!! It takes around 6 microseconds to permanently make a sender useless. Most people can't react that quickly. It is possible to check a fuel circuit before installing, but getting everything grounded properly is more trouble than it is worth.

Just install it properly and have faith....

It'll be OK..

j


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It's just my luck that something good is going to happen to me today.
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birdhunter789
Posted: May 9 2012, 08:54 PM


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Group: Members
Posts: 53
Member No.: 915
Joined: 26-August 10
thanks guys I pretty much think it's the guage but I'll mess with it a little more
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