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Engine Tech Technical discussion related to all relevant engines such as KA, SR, RB, CA, 2JZ , L24/26/28, VG, VQ, and LSx series.


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Old 02-14-2018, 07:04 AM   #1
Asmar
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s14 Car Won't Warm Up

Stock '95 S14. Car won't warm up. I thought it was the thermostat (as that's almost always the case in these situations) so I replaced it with an OEM Nissan thermostat. Car still won't warm up. Am I overlooking something else that's preventing the car from warming up? Searched around and couldn't find an answer.
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Old 02-14-2018, 09:00 AM   #2
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Is the heater blowing hot air?

If the thermostat is indeed operating as intended it may be a faulty temp sensor. There are two of them. one for the gauge and one for the ECU to help control fuel ratios. If you car runs rich check both.
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Old 02-15-2018, 06:51 PM   #3
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Temp sensor for the gauge in the block- probably went out on you
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Old 02-16-2018, 09:17 AM   #4
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use laser thermometer to check actual running temp, if hot replace your sensor, if not check the sensor...if not hot thermostat or possibly fan clutch
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Old 04-21-2018, 06:41 AM   #5
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Could also be a bad ground. Sometimes brand new thermostats stick open, but an open thermostat will still let the car warm up, it just takes a lot longer.
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Old 04-21-2018, 08:03 AM   #6
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Running a stock gauge or after market?

Never trust an s-chassis oem coolant temp gauge.
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Old 04-21-2018, 09:34 AM   #7
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are you getting heat? hows the coolant level? is the air all bled out?
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