cooling fans wont shut off
#1
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Join Date: Jul 2009
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cooling fans wont shut off
in my 95 se the cooling fans come on as soon as the switch is in run position, dosent matter if car is running or not, all the gauges in the car work well temp, oil,alt.ect. ive seen plenty of posts of fans not coming on but mine never quit unless i unplug them. any one have any ideas? thanks
#5
Retired
It'* 5pm right now. I have a little league game to goto in alittle bit. I'll look up your issue in my 95FSM when I get back...
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2002 *-10 5.7 V8
2023 Jeep Rubicon Diesel
Retired Administrator
2002 *-10 5.7 V8
2023 Jeep Rubicon Diesel
#6
Retired
Verify your temp gauge is NOT reading 226 degrees.
Disconnect the electrical connector that is on the A/C line down at the A/C compressor. Jump both pins with a jumper. Turn power on, do fans come on?
The high speed relay is energized by the PCM if the A/C refrigerant pressure fan switch opens, indicating refrigerant pressure above 210psi, or engine temperature reaches 226.
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Retired Administrator
2002 *-10 5.7 V8
2023 Jeep Rubicon Diesel
Retired Administrator
2002 *-10 5.7 V8
2023 Jeep Rubicon Diesel
#7
DINOSAURUS BOOSTUS
Expert Gearhead
Best way to do that is through a scan gauge. The coolant sensor is a dual sensor built together. One part feeds the dash gauge and the other feeds the pcm. Therefore the pcm might not see the same reading as the dash gauge if part of the sensor went bad.
#9
DINOSAURUS BOOSTUS
Expert Gearhead
On the S2 motor it'* the sensor directly under the thermostat housing on the LIM. Follow the one set of wiring that heads down on that side and you'll spot it.
What'* your other car? It'* a ~$20 sensor.
What'* your other car? It'* a ~$20 sensor.