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89 GT, temperature guage not working....

  • Thread starter Thread starter Bobert
  • Start date Start date May 18, 2005

Bobert

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May 18, 2005
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May 18, 2005
#1
  • May 18, 2005
  • #1
So what things should I check? If I understand correctly, there are 2 coolant temperature sending units (cts's) on the car. One at the front of the intake, and another somewhere on a heater hose? I have a mulitmeter if that'll need to be used.

Thanks for any help
 

ram360

Founding Member
Oct 19, 2002
2,162
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Pennsylvania
May 18, 2005
#2
  • May 18, 2005
  • #2
just replace the sender on the lower intake (that's the only one I know of) . It's like $4 at autozone.
 
D

DouglasOhio

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Jul 25, 2004
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May 18, 2005
#3
  • May 18, 2005
  • #3
 

Curse

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Apr 8, 2004
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El Paso, TX
May 18, 2005
#4
  • May 18, 2005
  • #4
Bobert said:
So what things should I check? If I understand correctly, there are 2 coolant temperature sending units (cts's) on the car. One at the front of the intake, and another somewhere on a heater hose? I have a mulitmeter if that'll need to be used.

Thanks for any help
Click to expand...
One is the ECT(one on the heater hoses) the computer uses this one. The other one(on the lower intake passanger side) is the one for the gauge.
 

HISSIN50

"How long does it take to get help in here?
15 Year Member
Nov 29, 1999
31,179
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May 18, 2005
#5
  • May 18, 2005
  • #5
exactly. to further clarify for parts searches, the gauge uses a sender (or sending unit) and the computer uses a sensor.

the sender has one wire attached to it, and the ECT has a couple (to do a quick check at the parts store).

good luck.
 

Bobert

New Member
May 18, 2005
63
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0
May 19, 2005
#6
  • May 19, 2005
  • #6
Thanks guys. I'll try the CTS.

But if it's not that, is the guage the only other option? And if it's the guage, can that be easily fixed? (I ask because I've heard the stock tach is so much of a pain to fix that it's not worth it so people just get an aftermarket tach)
 

HISSIN50

"How long does it take to get help in here?
15 Year Member
Nov 29, 1999
31,179
33
129
May 19, 2005
#7
  • May 19, 2005
  • #7
the stock gauges suck. if you have doubts or even have a perfect stock gauge, i still recommend aftermarket gauges. even a parts store temp gauge will be much much better than the hysteretic stocker.

my two cents. good luck.
 
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