Is this normal?
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Freshman User
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Is this normal?
I have an 07 F-350 6.0L where I live we have a lot of steep hills. My question is when climbing steep grades at highway speeds my turbo will run about 20 psi and then I notice the temp. guage start to rise. The temp will show just below the red line and stay there for a couple seconds then go down.
is this normal for a truck to do when not under a load? I would be very afraid to pull a heavy load now since this is how it acts empty. Oh by the way the truck has 167000. miles on it. New to me...
is this normal for a truck to do when not under a load? I would be very afraid to pull a heavy load now since this is how it acts empty. Oh by the way the truck has 167000. miles on it. New to me...
Hotshot
Joined: Aug 2006
Posts: 17,398
Likes: 317
From: Whittier, CA
Assuming the dash gauge is working right, your truck is getting far too hot. On the other hand, it's not boiling over, so you are lucky there. Best get it to the dealer and checked out before it blows the head gaskets or EGR cooler. Or oil cooler.
When the fan starts to roar, does the temp gauge drop? Normally it will drop very fast.
If you want to get more expert input, suggest you drop down to the 6.0 diesel engine forum and ask around there.
When the fan starts to roar, does the temp gauge drop? Normally it will drop very fast.
If you want to get more expert input, suggest you drop down to the 6.0 diesel engine forum and ask around there.
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Freshman User
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thanks Bill for the input. yes the temp drops quickly, and seems to be fine. I thought something was a little screwy with the temp going up and not under a load.
Thanks again, I will go to the 6.0 forum and check around there.
Have a great day.
Thanks again, I will go to the 6.0 forum and check around there.
Have a great day.
Hotshot
Joined: Aug 2006
Posts: 17,398
Likes: 317
From: Whittier, CA
Very possible, and also very possible the fan clutch is getting weak and slow to engage.
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Token Redneck
Joined: Jun 2007
Posts: 9,339
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From: Breckenridge, TX
Originally Posted by bismic
Also: Coolant Temp
Some say fan kicks on at 210, some say 215, others say 220. Full explanation: Engine temperature is not the only parameter that the PCM monitors to determine cooling fan operation. This is the reason that you will see some variation in engine temperature as it correlates to fan operation. The operation/description of the FSS (Fan Speed Sensor) from the PC/ED manual has a fairly good explanation as to how the system "thinks". This is not your traditional engine hits temp X and the fan clutch locks up. The fan speed sensor is a Hall-Effect sensor integral to the vistronic drive fan (VDF). The powertrain control module (PCM) will monitor sensor inputs and control the VDF speed based upon engine coolant temperature (ECT), transmission fluid temperature (TFT) and intake air temperature (IAT) requirements. When an increase in fan speed for vehicle cooling is requested, the PCM will monitor the FSS signal and output the required pulse width modulated (PWM) signal to a fluid port valve within the VDF. Engine begins to defuel at 221 deg. The thermostat begins to open at about 190*F to 195*F and is not fully open until about 215*F to 219*F..
Some say fan kicks on at 210, some say 215, others say 220. Full explanation: Engine temperature is not the only parameter that the PCM monitors to determine cooling fan operation. This is the reason that you will see some variation in engine temperature as it correlates to fan operation. The operation/description of the FSS (Fan Speed Sensor) from the PC/ED manual has a fairly good explanation as to how the system "thinks". This is not your traditional engine hits temp X and the fan clutch locks up. The fan speed sensor is a Hall-Effect sensor integral to the vistronic drive fan (VDF). The powertrain control module (PCM) will monitor sensor inputs and control the VDF speed based upon engine coolant temperature (ECT), transmission fluid temperature (TFT) and intake air temperature (IAT) requirements. When an increase in fan speed for vehicle cooling is requested, the PCM will monitor the FSS signal and output the required pulse width modulated (PWM) signal to a fluid port valve within the VDF. Engine begins to defuel at 221 deg. The thermostat begins to open at about 190*F to 195*F and is not fully open until about 215*F to 219*F..
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Cargo Master
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From: Lubbock
The dash gauge is pretty much a idiot light. Diagnosing the problem here could take away from fixing the issue. Your best bet is to get some sort of gauge that either uses the obd2 for readings from the factory sensor or a mechanical gauge. It is highly likely that the oil cooler is on its way out and it will drive the coolant temps up a lot. Either get some diagnostic tools or take it to the dealer. Driving it with those symptoms can lead to costly fixes. Asw with all 6.0 trucks a coolant and oil temp gauge is important along with a egt and fule psi gauge. But that is my opinion on that.
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Freshman User
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knowledge is power
more "stuff" for my truck my wife will love that, but a mans gotta do what a mans gotta do right? Thanks for the info I will start digging into the guages or possibly some type of monitering system. But first can a dealer or good shop test the cooler and fan to determine if it is about to crapp out?
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