Fuel and Oil Pressure Gauge Not working - MustangForums.com

Go Back   MustangForums.com > Ford Mustang Tech > 5.0L (1979-1995) Mustang

5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

Fuel and Oil Pressure Gauge Not working

Thread Tools Search this Thread
Old 11-01-2007, 06:05 PM   #1
Hawaii 93 Stang
Join Date: Oct 2007
Posts: 21
Default Fuel and Oil Pressure Gauge Not working

Hey Guys. Need help!!!! My fuel and oil pressure gauges are not working. The fuel gauge goes past the F when I fill up, and only goes down 1/8 of a needle when almost empty. Oil pressure stays at 3/4 and only goes down to 0 when I start her up. One shop told me it could be the fuel sending unit ora resistor behind the dash. Does anyone have any idea why??? Thanks!!

93 Mustang 5.0 LX
Hawaii 93 Stang is offline   Reply With Quote
Old 11-01-2007, 06:10 PM   #2
4th Gear Member
Join Date: Dec 2004
Posts: 1,668
Default RE: Fuel and Oil Pressure Gauge Not working

My only sugestion is get a aftermarket guage, the stockers are inaccurate either way......my fuel guage does the same thing, just fill up at a half a tank.....the top half costs just as much to fill as the bottum half right! hahahah. As for oil pressure change the sending unit on the block, its located right at the front drivers side of the block way down low with one wire attached to it.....sometimes they just need a good cleaning (Wires). The wires on the tank are a pita to get to, have to drop the tank......I am lazy and not dropping my tank until I need to.

331 CHP Pro Streetfighter, Eddy Victor Jr Heads,Black Trick Flow Track Heat Intake,Custom Cam,77 Maf,36 # Inj,70 mm T body,BBk Lt & H Pipe,Borla XR-1's
schwindty is offline   Reply With Quote
Old 11-01-2007, 06:14 PM   #3
3rd Gear Member
Join Date: Dec 2006
Vehicle: 1994 Mustang GT Coupe
Location: South Carolina
Posts: 776
Alan Hitt
Default RE: Fuel and Oil Pressure Gauge Not working

There is also a voltage regulator of the back of your gauges if you have a 90-93 fox. It could possibly be going bad.

306, TRW Forged Pistons, GT40 heads, 1.6RR, Comp 281HR cam, 42lb injectors, Cobra Intake, BBK shorty headers, 125 dry shot.
ahittz24 is offline   Reply With Quote


Similar Threads
Thread Thread Starter Forum Replies Last Post
What's considered normal oil pressure? yurizx6r 5.0L (1979-1995) Mustang 49 09-07-2015 07:40 PM
How to Test Fuel & Alternator Gauges unit91 Classic Mustangs (Tech) 1 08-22-2015 12:44 AM
Alternator problem? jjwinel78 V6 (1994-2004) Mustangs 1 08-17-2015 04:34 PM
Need Help Diagnosing Have Codes (Confused) djbigskrilla 2005-2014 Mustangs 13 08-11-2015 01:59 PM
Oil pressure freak out yurizx6r 5.0L (1979-1995) Mustang 14 08-11-2015 08:50 AM

50, 79, 9093, 93, broke, ford, fox, fuel, gas, gauge, gauges, guage, mustang, oil, pressure, working

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump


All times are GMT -5. The time now is 12:49 PM.

This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. FordŽ is a registered trademark of the Ford Motor Company