The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1969 - 1972 Blazers and Jimmys Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 05-08-2012, 01:42 AM   #1
craigger007
Registered User
 
craigger007's Avatar
 
Join Date: Apr 2011
Location: Kirkland, WA
Posts: 20
Stuck-ish fuel gauge

All of a sudden my fuel gauge is stuck between an eighth and a quarter tank. However it is not fully stuck, but will bounce a bit when gas is moving around. I've never dealt with this. What are the right trouble shooting steps on this one? Do I need to drop the tank or could my gauge be bad?

Thanx
Craig
craigger007 is offline   Reply With Quote
Old 05-10-2012, 08:35 AM   #2
BigRed Beast
Registered User
 
BigRed Beast's Avatar
 
Join Date: Aug 2007
Location: Parker, CO
Posts: 140
Re: Stuck-ish fuel gauge

Sending unit. You can run some basic wire tests to confirm nothing's broken, but it sounds like the sending unit. We had the same thing, but with an aftermarket 38 gallon tank. The stock sending units don't do well in those tanks, so we live with a less-than-perfect gauge reading--it bounces when it gets low.
__________________
Big Red Beast
1972 Blazer CST AC/Auto/4x4 "Project"
1997 F 350 CC Powerstroke "The Great White"
BigRed Beast is offline   Reply With Quote
Old 05-10-2012, 10:31 PM   #3
bigbadchev72
People know me
 
bigbadchev72's Avatar
 
Join Date: Jun 2007
Location: Hermiston, oregon
Posts: 840
Re: Stuck-ish fuel gauge

sounds like your float has a hole in it, probably partially filled with full keeping it submerged. If you do replace the sending unit, do yourself a favor and throw the replacement float away. They leak right out of the box.

You can pick this one up for under $10 at a ford dealer and it works great.
http://s184.photobucket.com/albums/x...rent=truck.jpg
__________________
1972 k/5 blazer CST 4X4 Crate 350, th350/205, dana44with trac-loc/14 bolt with detroit locker, 4 wheel discs 4.56s, 8" suspension lift using 73-87springs, 1" zerorate custom front crossmember, HAD CV drivelines and driveshaft e-brake, full cage, PRP seats, Full autometer gauges, 38x14.5x16 Toyo M/Ts, 16x10 Polished aluminum rockcrusher wheels

1967 longbox 4x4, Strong 400/400/208, 44/12bolt 4.10s, 6" lift, 35" Toyo M/Ts on corvette rally wheels
bigbadchev72 is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 05:06 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com