Max Temp on 2.3L I4?
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Mountain Pass
Joined: Apr 2022
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Max Temp on 2.3L I4?
My Ranger has a broken temp gauge, but I do have the UltraGauge set up to read the coolant temp, so I know it normally runs from 188 to 192 degrees Fahrenheit.
However, the UG doesn’t have the redline like a factory gauge, so I don’t really know how much room I have to work with. At what point should I turn my cab heater on to get the extra cooling? I’ve been turning it on in stop and go traffic when the temp gets to 205 or so, but is that unnecessarily soon? What is a danger temp for the engine?
However, the UG doesn’t have the redline like a factory gauge, so I don’t really know how much room I have to work with. At what point should I turn my cab heater on to get the extra cooling? I’ve been turning it on in stop and go traffic when the temp gets to 205 or so, but is that unnecessarily soon? What is a danger temp for the engine?
Cargo Master
Joined: Mar 2001
Posts: 2,759
Likes: 70
From: Elk River, MN
Not to worry. Your engine can withstand much higher temperatures. Keep an eye on the rising temps and consider the heater if the engine temps get say over 220 F.
Your 50/50 mixture of antifreeze/water coolant will not boil until around 256 F with a good pressure radiator cap. There is a simple test to determine if the sender is at fault, but I can't recall it at the present.
You could google it. A sender is easy to replace.
Your 50/50 mixture of antifreeze/water coolant will not boil until around 256 F with a good pressure radiator cap. There is a simple test to determine if the sender is at fault, but I can't recall it at the present.
You could google it. A sender is easy to replace.
Thread Starter
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Mountain Pass
Joined: Apr 2022
Posts: 100
Likes: 11
Not to worry. Your engine can withstand much higher temperatures. Keep an eye on the rising temps and consider the heater if the engine temps get say over 220 F.
Your 50/50 mixture of antifreeze/water coolant will not boil until around 256 F with a good pressure radiator cap. There is a simple test to determine if the sender is at fault, but I can't recall it at the present.
You could google it. A sender is easy to replace.
Your 50/50 mixture of antifreeze/water coolant will not boil until around 256 F with a good pressure radiator cap. There is a simple test to determine if the sender is at fault, but I can't recall it at the present.
You could google it. A sender is easy to replace.
Hotshot
Joined: Jun 2015
Posts: 12,831
Likes: 2,436
My Ranger has a broken temp gauge, but I do have the UltraGauge set up to read the coolant temp, so I know it normally runs from 188 to 192 degrees Fahrenheit.
I’ve been turning it on in stop and go traffic when the temp gets to 205 or so, but is that unnecessarily soon? What is a danger temp for the engine?
I’ve been turning it on in stop and go traffic when the temp gets to 205 or so, but is that unnecessarily soon? What is a danger temp for the engine?
Yes. That is unnecessary since those are completely normal temperatures.
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Mountain Pass
Joined: Apr 2022
Posts: 100
Likes: 11
Originally Posted by My4Fordtrucks;[url=tel:20514703
20514703]Seems like a lot of work to install a gauge without testing the old one first.
Yes. That is unnecessary since those are completely normal temperatures.
Disconnect the wire from the sending unit and ground the wire with the key on. The gauge should be pegged to the HOT end of the gauge.
The sending unit is a potentiometer. It is sending a voltage back the the gauge based on the resistance in the sending unit. Umm… the gauge does not work or is not accurate.
Yes. That is unnecessary since those are completely normal temperatures.
Disconnect the wire from the sending unit and ground the wire with the key on. The gauge should be pegged to the HOT end of the gauge.
The sending unit is a potentiometer. It is sending a voltage back the the gauge based on the resistance in the sending unit. Umm… the gauge does not work or is not accurate.
As far as the sender goes, I just wanted to make sure it wont directly hurt performance if it is broken. Thanks for giving the test!
Logistics Pro
Joined: Jan 2002
Posts: 4,907
Likes: 39
From: suburban atlanta
The temp gauge sensor changes its resistance based upon temperature. Low resistance(as in gauge lead grounded) will indicate high temperature. High resistance indicates cooler temperature. The reading you get from the OBD-II is the one used by the ECM to determine fuel and timing during engine operation in closed loop. I may have sensor and sender reversed, but one is for the gauge, one is for the ECM.
tom
tom
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