Carts2Wheels
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- April 23, 2018
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- Year, Model & Trim Level
- 2007 Explorer Limited V8
Preface: I did do some research and found a few similar threads/issues but nothing exactly like what I'm experiencing so I decided to start a new thread.
2007 Explorer Limited, 4.6L V8
149,000ish miles
I recently started to see significant fluctuations on my temperature gauge, a few times so high it tripped the dash warning.
The scenario goes like this. Driving the truck and gauge reaches normal. Once I experience some stop/go or waiting for a car wash or something along those lines I can hear the fan clutch engage and start the loud whirring noise form under the hood. Accelerate away, noise increases as engine speed increases, don't think much of it until I notice my temperature gauge rise rapidly. It stays up for a while, when the fan disengages (I no longer hear it), the temp drops back down to normal rapidly. If I accelerate hard a couple times while the fan is whirring it pegs.
One thing of note that I didn't see in any of the other threads...the temp only RISES when the fan noise is occurring, otherwise the temperature gauge stays normal.
This past weekend I replaced the thermostat, problem still persists. I've read some forum threads and have the following possibilities to start into next: fan clutch replacement, water pump replacement (but wouldn't it always run hot?), air charge temperature sensor, PCM software update.
Anyone have any thoughts on this? It baffles me that it overheats when the fan seems to be engaged but not any other time. Thanks in advance.
2007 Explorer Limited, 4.6L V8
149,000ish miles
I recently started to see significant fluctuations on my temperature gauge, a few times so high it tripped the dash warning.
The scenario goes like this. Driving the truck and gauge reaches normal. Once I experience some stop/go or waiting for a car wash or something along those lines I can hear the fan clutch engage and start the loud whirring noise form under the hood. Accelerate away, noise increases as engine speed increases, don't think much of it until I notice my temperature gauge rise rapidly. It stays up for a while, when the fan disengages (I no longer hear it), the temp drops back down to normal rapidly. If I accelerate hard a couple times while the fan is whirring it pegs.
One thing of note that I didn't see in any of the other threads...the temp only RISES when the fan noise is occurring, otherwise the temperature gauge stays normal.
This past weekend I replaced the thermostat, problem still persists. I've read some forum threads and have the following possibilities to start into next: fan clutch replacement, water pump replacement (but wouldn't it always run hot?), air charge temperature sensor, PCM software update.
Anyone have any thoughts on this? It baffles me that it overheats when the fan seems to be engaged but not any other time. Thanks in advance.