• Mustang Forums
  • 1965 - 1973 Classic Mustangs -General/Talk-
  • Classic Mustang Specific Tech

Fuel and temp gauge quit - suggestions

  • Thread starter Thread starter u0061914
  • Start date Start date Jun 29, 2011
U

u0061914

New Member
Aug 20, 2009
54
0
0
Prior Lake, MN
Jun 29, 2011
#1
  • Jun 29, 2011
  • #1
The car is finally on the road. Carb and blinker issues are resolved ( thanks to suggestions here). Of course, now I am on to the next issue.

My fuel guage and temp guage quit working. They had been functioning just fine until recently. When I start the car/turn on the key, they both peg all the way to full and hot. Shut the key off and they drop back down to to the left.


Suggestions on what this might be? I have mot dug into this yet, but hope to this evening.

thanks
 

robbz28

10 Year Member
Sep 23, 2009
775
5
39
Epps, LA
Jun 29, 2011
#2
  • Jun 29, 2011
  • #2
Sounds like the sending wires are grounded out somewhere, possibly on the back of the cluster.
 

rbohm

Founding Member
Apr 12, 2002
6,698
550
204
tucson,az
Jun 29, 2011
#3
  • Jun 29, 2011
  • #3
robbz28 said:
Sounds like the sending wires are grounded out somewhere, possibly on the back of the cluster.
Click to expand...

that or the ivr is bad.
 

robbz28

10 Year Member
Sep 23, 2009
775
5
39
Epps, LA
Jun 29, 2011
#4
  • Jun 29, 2011
  • #4
I thought about the IVR...but wouldnt the oil and volts peg out too if it were the IVR...definately worth a look still, I did the electronice IVR mod I found on one of these threads...no more pulsing gauges.
 

rbohm

Founding Member
Apr 12, 2002
6,698
550
204
tucson,az
Jul 1, 2011
#5
  • Jul 1, 2011
  • #5
robbz28 said:
I thought about the IVR...but wouldnt the oil and volts peg out too if it were the IVR...definately worth a look still, I did the electronice IVR mod I found on one of these threads...no more pulsing gauges.
Click to expand...

the ammeter is on its own circuit. as for the other, what is likely happening is that the power is finding the ground it needs through one of the two gauges affected. in my case it was the oil pressure and water temp gauges that were going funky.
 

tx65coupe

Active Member
Nov 29, 1999
1,551
1
37
Jul 7, 2011
#6
  • Jul 7, 2011
  • #6
I was thinking IVR too, but if the other guages work then I'm going to say wiring issue is to blame.
 
You must log in or register to reply here.

Similar threads

G
1991 GT 5.0 running hot
  • gvanginkel403
  • Jul 1, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
5
Views
126
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Jul 2, 2026
General karthief
C
98 gt fuel pressure issues
  • chasecollier1984
  • Jun 2, 2026
  • SN95 4.6L Mustang Tech
Replies
0
Views
71
SN95 4.6L Mustang Tech Jun 2, 2026
chasecollier1984
C
J
'96 Cobra: A/C gets weak and engine misfires under load when warm
  • jruhnke
  • Oct 22, 2025
  • SVT Tech Forum
Replies
2
Views
309
SVT Tech Forum Nov 20, 2025
nickyb
M
Resolved 1988 Foxbody - Overheating Summer
  • MDrisc
  • Oct 26, 2025
  • Fox 5.0 Mustang Tech
Replies
16
Views
647
Fox 5.0 Mustang Tech Friday at 12:37 PM
fasterthangas
F
K
Engine 2000 Mustang GT - Fuel issue post-blown spark plug repair
  • kenster1092
  • Feb 26, 2026
  • SN95 4.6L Mustang Tech
Replies
4
Views
340
SN95 4.6L Mustang Tech Mar 10, 2026
kenster1092
K
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1965 - 1973 Classic Mustangs -General/Talk-
  • Classic Mustang Specific Tech
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?