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Old 02-22-2014, 05:35 PM   #1
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Cold engine

My engine was reading cold and not warming up. I changed out the thermostat and still having the same issue. The engine is definitely getting up to temp now but it's still reading cold. All of the other dash stuff is still working fine except for the mileage calculator. When I bought the car the guy said the heater core was out. Does this affect engine temp readings? Or is there something I'm missing? Could only the dash temperature gauge be out? Please help, I'm at a loss here. Not too familiar with mechanical work. Dumb and young female lol...
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Old 02-22-2014, 07:25 PM   #2
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Well what degree thermostat did you get? Does that temp gauge move at all or does it look lifeless? My buddy with a dodge Dakota has a bad heating core in it and his engine temp stays pretty low and his heat doesn't work. Does your heat work?
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Old 02-22-2014, 08:59 PM   #3
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Temp gauge could be out...stock gauges were notorious for breaking, especially since its probably 20-30 years old.
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Old 02-22-2014, 10:20 PM   #4
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Mine reads just like that. I believe the gauge is somewhat correct because my fans kick on around 200 and they rarely kick on (mid summer in traffic is the only time the gauge gets to the middle and fans kick on). I also believe it isn't the heater core because when the gauge gets to the center it blows hot.
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Old 02-23-2014, 09:57 AM   #5
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Quote:
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Well what degree thermostat did you get? Does that temp gauge move at all or does it look lifeless? My buddy with a dodge Dakota has a bad heating core in it and his engine temp stays pretty low and his heat doesn't work. Does your heat work?

I got the standard part for the car not sure of it's specs and the old one was in fact stuck open. It was obvious once I got it out of there. The gauge does move but never even close to normal temp. Doesn't seem to be putting off any engine heat through the vents but I haven't driven far yet and it's in the 60's so it's a little hard to judge. But I was surprised it runs much better now in general. She sounds happy.
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Old 02-23-2014, 10:02 AM   #6
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Cold engine

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Originally Posted by 92coupe View Post
Mine reads just like that. I believe the gauge is somewhat correct because my fans kick on around 200 and they rarely kick on (mid summer in traffic is the only time the gauge gets to the middle and fans kick on). I also believe it isn't the heater core because when the gauge gets to the center it blows hot.

So strange. I have the heater core but I'm not about to just start tearing the car apart for a little warmth...may consider that next winter I guess. But I just don't get it. I hope it's not a bad thing. I was told the thermostat may be partially responsible for my epic gas burnage so maybe at least that issue is resolved now. We will find out.
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Old 02-23-2014, 10:11 AM   #7
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Checked the sending unit for the gauge?
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Old 02-23-2014, 10:57 AM   #8
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Checked the sending unit for the gauge?

I have to get in there soon anyway I will try to figure that out
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Old 02-27-2014, 08:00 PM   #9
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My guess is you just need either new sending unit or guage. I would replace the sending unit. I'm leading towards that.
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Old 03-10-2014, 02:41 AM   #10
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Worst comes to worst get an aftermarket mechanical temp gauge ..... Very easy to install..... Takes about 15 minutes at the very least that'll tell I if it's the gauge or not
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Old 03-10-2014, 06:42 PM   #11
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I was having gauge reading issues. Wasn't sure if it was the gauges or sending units. I just purchased a pair of Autometer gauges (temperature & oil pressure) and installed them over the weekend. In addition to looking great, my readings are right where they should be. Temperature 190 and oil pressure between 25-50 depending upon idle or power. Might be worth considering.
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Old 03-11-2014, 07:41 PM   #12
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I have to get in there soon anyway I will try to figure that out
Good video's on You Tube for for testing sending units. I'd send you a link but I'm computer illiterate.
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Old 03-12-2014, 05:21 PM   #13
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Mustangs are notorious for the factory cluster going out.... That's y I went with all aftermarket gauges and it fixed tha problem
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Old 03-12-2014, 05:36 PM   #14
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I was having gauge reading issues. Wasn't sure if it was the gauges or sending units. I just purchased a pair of Autometer gauges (temperature & oil pressure) and installed them over the weekend. In addition to looking great, my readings are right where they should be. Temperature 190 and oil pressure between 25-50 depending upon idle or power. Might be worth considering.

Those are really nice looking man, how hard where they to install I wouldn't mind getting them.
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Old 03-12-2014, 05:43 PM   #15
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Really easy. Got the entire set up from Jegs. Hardest part was actually trimming the vent diverters to work in the gauge gate. Wiring was simple. Common power to headight on switch for illumination, common ground for illumination to dash support. Then ignition on for gauge power, common ground for gauges to battery negative and leads to both new sending units. Honestly only 2-3 hours. So worth it and the look so cool functioning while I am driving.
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