temp sending unit??
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New User
Joined: Aug 2003
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temp sending unit??
93 Ranger 4x4, reg cab, 2.3 liter
right now I have about 107000 miles on it
Recently, I have been noticing that my temperature gauge is acting strange. When started it will usually slowly move up to the normal operating temp readings, someplace between the C and the N in normal. During hotdays, it has recently started hitting the N or slightly higher, then in a few minutes it will drop back down to what I consider to be the normal temp reading for this truck. On cooler night drives, it will occasionally stay below the C and then pop up to normal and back down under the C in a matter of 10 - 30 seconds.
I have replaced the the thermostat thinking at first that it may be going bad, but it continues to happen. I have asked many people with much more automotive experience than I have, and they all seem to think that the temp sending unit is going bad. I tend to believe them, but I would like additional input.
Coolant levels remain constant, its not dirty, but there a few floaties in it. Not sure what from, but they look kinda white.
I beleive that I should replace the temp sending unit regardless,
Where is it located ???? I have looked over the whole engine and can not find it.
BTW, i have the haynes manual for 83-93 Rangers/Broncos -- Since i have the 93, it should show me, but it does not --
right now I have about 107000 miles on it
Recently, I have been noticing that my temperature gauge is acting strange. When started it will usually slowly move up to the normal operating temp readings, someplace between the C and the N in normal. During hotdays, it has recently started hitting the N or slightly higher, then in a few minutes it will drop back down to what I consider to be the normal temp reading for this truck. On cooler night drives, it will occasionally stay below the C and then pop up to normal and back down under the C in a matter of 10 - 30 seconds.
I have replaced the the thermostat thinking at first that it may be going bad, but it continues to happen. I have asked many people with much more automotive experience than I have, and they all seem to think that the temp sending unit is going bad. I tend to believe them, but I would like additional input.
Coolant levels remain constant, its not dirty, but there a few floaties in it. Not sure what from, but they look kinda white.
I beleive that I should replace the temp sending unit regardless,
Where is it located ???? I have looked over the whole engine and can not find it.
BTW, i have the haynes manual for 83-93 Rangers/Broncos -- Since i have the 93, it should show me, but it does not --
Post Fiend
Joined: Jan 2003
Posts: 9,748
Likes: 16
From: Connecticut
temp sending unit??
First try purging any air that may be in the cooling system...make sure the coolant level in the RADIATOR (not just the expansion tank) is full when the engine is cold. Start up the motor, and as the it warms up, continue to add coolant as needed to the radiator. At some point you will have to replace the radiator cap because the coolant will begin to overflow.
The temperature sending unit has only ONE WIRE going to it and on 4 cylinder engines it is threaded into the engine block on the driver's side, at the rear, just below the cylinder head.
Good luck, and welcome to Ford Truck Enthusiasts!
The temperature sending unit has only ONE WIRE going to it and on 4 cylinder engines it is threaded into the engine block on the driver's side, at the rear, just below the cylinder head.
Good luck, and welcome to Ford Truck Enthusiasts!
Last edited by Rockledge; Sep 1, 2003 at 11:39 AM.
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Joined: Aug 2003
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temp sending unit??
well, I ran the engine, sans radiator cap for about 10 to 15 minutes, - the fluid level never dropped and it continued to slowly drip out as the engine was run, one other thing to mention, the fluid was quite warm when I replaced the cap, so I am certain that the new thermostat, and the old water pump are working fine.
I am getting plenty of flow, and it was evident when I increased the engine rpms, -
about the temp senind unit, looks like i am going to have to crawl under the truck to get to it
at least I dont need a jack
I am getting plenty of flow, and it was evident when I increased the engine rpms, -
about the temp senind unit, looks like i am going to have to crawl under the truck to get to it
at least I dont need a jack
