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  Mustangsandmore Forum Archive
  Ford Thunderbird
  temp guage stuck on HOT side

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Author Topic:   temp guage stuck on HOT side
shoe
Gearhead

Posts: 315
From: midwest
Registered: Feb 2001

posted 07-19-2005 05:02 PM     Click Here to See the Profile for shoe        Reply w/Quote
Any easy way to test why my temp guage is on the far right(HOT) all the time either with key on or off. Any way to test the guage to see if that is the problem? wiring? or the sender? HELP

trashline
Gearhead

Posts: 2230
From: Levittown, Pa
Registered: Dec 2003

posted 07-19-2005 10:24 PM     Click Here to See the Profile for trashline        Reply w/Quote
any other gauges pegged? and what kind of car? remove the sender wire and it should drop. if it does replace the sending unit. usually to test the gauge is to ground the the lead for the sending unit and it should go pegged then remove the ground wire and it should drop. but chances are if the gauge is messed up then fuel and oil guage will be messed up. which will indicate that probably the IVR is taking a crap which is mounted on the back of the instrument cluster.

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88 thunderbird TC 2.3L
66 mustang 200ci 3 speed
68 Fairlane 289 w/ auto
79 f150 300 3 onda tree

shoe
Gearhead

Posts: 315
From: midwest
Registered: Feb 2001

posted 07-22-2005 01:13 PM     Click Here to See the Profile for shoe        Reply w/Quote
55 T-bird. I took the wire off the temp sender and grounded the wire to the block and the guage dropped back to cold from it's hot stuck position,with the key on. So I am assuming the guage works & the temp sender is bad. Or probably the temp sender is a 12V cause the motor is a 56 312 and I'm figuring now that that is the problem. Anyway I ordered a new 6 volt temp sender.That should do it....HOPE..Shoe

trashline
Gearhead

Posts: 2230
From: Levittown, Pa
Registered: Dec 2003

posted 07-22-2005 02:34 PM     Click Here to See the Profile for trashline        Reply w/Quote
usually when you ground the wire out it pegs the gauge. but it sounds like yours is doing the opposite. the sender was probably a couple bucks but it sounds like it could be the gauge itself. any trouble from other gauges?

------------------
88 thunderbird TC 2.3L
66 mustang 200ci 3 speed
68 Fairlane 289 w/ auto
79 f150 300 3 onda tree

shoe
Gearhead

Posts: 315
From: midwest
Registered: Feb 2001

posted 07-23-2005 01:07 PM     Click Here to See the Profile for shoe        Reply w/Quote
It might have to do with the 55 being a negative ground car.Anyway I ordered a new sender. I'll let you know on that. Thanks shoe

shoe
Gearhead

Posts: 315
From: midwest
Registered: Feb 2001

posted 07-25-2005 04:52 PM     Click Here to See the Profile for shoe        Reply w/Quote
I meant positive ground in my previous post.

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