Are my temps ok or is there a problem?
#1
Are my temps ok or is there a problem?
I have a 2005 Ford F-250 with 46,000 miles. A few months ago I did a coolant flush and added a coolant bypass filter. My ECT/EOT delta is perfect staying between 5-8 def F. Since it is starting to warm up here in Colorado, I have been seeing the ECT hover around 200 F driving from work 25 miles on the highway.
I have a decent grade to get to my house and yesterday the ambient temperature was 92 F and my temperatures were ECT 210 F and EOT 215 F while climbing the long grade.
Are these temperatures withing reason considereing the ambient temperature? Or do I need to look at the thermostat or water pump or something else? Thanks!!!!
I have a decent grade to get to my house and yesterday the ambient temperature was 92 F and my temperatures were ECT 210 F and EOT 215 F while climbing the long grade.
Are these temperatures withing reason considereing the ambient temperature? Or do I need to look at the thermostat or water pump or something else? Thanks!!!!
#2
#3
#4
Does your a/c blow cold while stopped? That is where the fan is mist needed to pull air over the condensor to keep the a/c cold.
You should pop the hood and verify the fan is turning.
At 210 ect, you should hear the fan sounding like a jet engine. My fan will turn 1500 rpms for a moment when starting from a stop, as the sudden change in engine rpms causes the fan to go faster, at 190* with the a/c on.
You should pop the hood and verify the fan is turning.
At 210 ect, you should hear the fan sounding like a jet engine. My fan will turn 1500 rpms for a moment when starting from a stop, as the sudden change in engine rpms causes the fan to go faster, at 190* with the a/c on.
#6
What do you guys think?
Fan clutch
Water pump
Thermostat
It looks like my oil cooler is in good shape with a 5-8 deg F delta.
It seems like the truck gets hotter when the AC is running full blast too.
If I stay at a constant grade and the temps are 210 F ECT and 215 F EOT, and constant engine load and then the fan kicks on, how much would it lower the temps if it is 90 deg F out?
Fan clutch
Water pump
Thermostat
It looks like my oil cooler is in good shape with a 5-8 deg F delta.
It seems like the truck gets hotter when the AC is running full blast too.
If I stay at a constant grade and the temps are 210 F ECT and 215 F EOT, and constant engine load and then the fan kicks on, how much would it lower the temps if it is 90 deg F out?
#7
I'm not going to tell you to change hard parts without better diagnostic data. The fan clutch isn't cheap enough to swap on a hunch.
Two things you could do that don't cost money. One is set up a temporary override setup for the fan clutch. You can ground (read:GROUND, not power) a wire in the fan clutch wiring connector, and it should command the clutch to lock up 100%. If you do that, and you don't hear the fan while starting from a stop, then I would call that a positive on a failing fan clutch.
https://www.ford-trucks.com/forums/1...hich-wire.html
The second would be to wire in the high-idle mod using the BCP wire (purple/green). With my original snow plow fan clutch using this high idle would lock the fan clutch in, and I'd normally get at least one start where I could hear the fan locked in if I started driving imediately after kicking it out of high idle:
https://www.ford-trucks.com/forums/4...-switches.html
Honestly though, if you have access to an Android phone or tablet, buy the Torque Pro app for $5 and find a bluetooth OBDII adaptor, and just read the fan speed and clutch lock up PIDs. Otherwise it's still all a guess IMO.
I'm not saying it's the stat because 200* isn't unreasonable for a stock 190* stat. But since it did come after a flush, there's a chance that it could be sticking. This is going to sound odd, but 200* is actually better than the OEM stat set at 190*. Many people have changed to a Mishimoto 200* stat, it doesn't cause higher temps (past the higher base set point) because it opens fully by the same point at the stock stat, and it makes winter performance significantly better. I used to run a grill cover to keep temps above 190*, I don't bother anymore.
https://www.ford-trucks.com/forums/1...hermostat.html
I can't find the part numbers, but there was an issue with the Mishi stat fitting into some t-stat housings. I had the wrong p/n stamped on my housing, so I ordered a new housing with a stock stat in it. You could check to see if your housing is the correct p/n, if it's not order a new housing and stock stat, then you aren't out any parts costs if it's not the issue now when you put a Mishi in later before winter. Plus if we're swaping parts, a t-stat is the cheapest one short of a new degas bottle cap to start with. A cap isn't a bad idea, especially if your's is the original. The seal gets old in them. P/n for that is 9C3Z-8101-B
This is the p/n stamp on the housing. The C91 housing was the one that wasn't supposed to have problems, but either will work apparently:
https://www.ford-trucks.com/forums/1...l#post15160768
http://www.riffraffdiesel.com/degas-coolant-bottle-cap/
Two things you could do that don't cost money. One is set up a temporary override setup for the fan clutch. You can ground (read:GROUND, not power) a wire in the fan clutch wiring connector, and it should command the clutch to lock up 100%. If you do that, and you don't hear the fan while starting from a stop, then I would call that a positive on a failing fan clutch.
https://www.ford-trucks.com/forums/1...hich-wire.html
The second would be to wire in the high-idle mod using the BCP wire (purple/green). With my original snow plow fan clutch using this high idle would lock the fan clutch in, and I'd normally get at least one start where I could hear the fan locked in if I started driving imediately after kicking it out of high idle:
https://www.ford-trucks.com/forums/4...-switches.html
Honestly though, if you have access to an Android phone or tablet, buy the Torque Pro app for $5 and find a bluetooth OBDII adaptor, and just read the fan speed and clutch lock up PIDs. Otherwise it's still all a guess IMO.
I'm not saying it's the stat because 200* isn't unreasonable for a stock 190* stat. But since it did come after a flush, there's a chance that it could be sticking. This is going to sound odd, but 200* is actually better than the OEM stat set at 190*. Many people have changed to a Mishimoto 200* stat, it doesn't cause higher temps (past the higher base set point) because it opens fully by the same point at the stock stat, and it makes winter performance significantly better. I used to run a grill cover to keep temps above 190*, I don't bother anymore.
https://www.ford-trucks.com/forums/1...hermostat.html
I can't find the part numbers, but there was an issue with the Mishi stat fitting into some t-stat housings. I had the wrong p/n stamped on my housing, so I ordered a new housing with a stock stat in it. You could check to see if your housing is the correct p/n, if it's not order a new housing and stock stat, then you aren't out any parts costs if it's not the issue now when you put a Mishi in later before winter. Plus if we're swaping parts, a t-stat is the cheapest one short of a new degas bottle cap to start with. A cap isn't a bad idea, especially if your's is the original. The seal gets old in them. P/n for that is 9C3Z-8101-B
This is the p/n stamp on the housing. The C91 housing was the one that wasn't supposed to have problems, but either will work apparently:
https://www.ford-trucks.com/forums/1...l#post15160768
http://www.riffraffdiesel.com/degas-coolant-bottle-cap/
Trending Topics
#8
Awesome information! Thanks for taking the time to write this up! I will try the Bluetooth OBD app and see if it locks in. I will check back with results.
Thanks again!
Thanks again!
I'm not going to tell you to change hard parts without better diagnostic data. The fan clutch isn't cheap enough to swap on a hunch.
Two things you could do that don't cost money. One is set up a temporary override setup for the fan clutch. You can ground (read:GROUND, not power) a wire in the fan clutch wiring connector, and it should command the clutch to lock up 100%. If you do that, and you don't hear the fan while starting from a stop, then I would call that a positive on a failing fan clutch.
https://www.ford-trucks.com/forums/1...hich-wire.html
The second would be to wire in the high-idle mod using the BCP wire (purple/green). With my original snow plow fan clutch using this high idle would lock the fan clutch in, and I'd normally get at least one start where I could hear the fan locked in if I started driving imediately after kicking it out of high idle:
https://www.ford-trucks.com/forums/4...-switches.html
Honestly though, if you have access to an Android phone or tablet, buy the Torque Pro app for $5 and find a bluetooth OBDII adaptor, and just read the fan speed and clutch lock up PIDs. Otherwise it's still all a guess IMO.
I'm not saying it's the stat because 200* isn't unreasonable for a stock 190* stat. But since it did come after a flush, there's a chance that it could be sticking. This is going to sound odd, but 200* is actually better than the OEM stat set at 190*. Many people have changed to a Mishimoto 200* stat, it doesn't cause higher temps (past the higher base set point) because it opens fully by the same point at the stock stat, and it makes winter performance significantly better. I used to run a grill cover to keep temps above 190*, I don't bother anymore.
https://www.amazon.com/Mishimoto-MMT.../dp/B00OBEP7AY
https://www.ford-trucks.com/forums/1...hermostat.html
I can't find the part numbers, but there was an issue with the Mishi stat fitting into some t-stat housings. I had the wrong p/n stamped on my housing, so I ordered a new housing with a stock stat in it. You could check to see if your housing is the correct p/n, if it's not order a new housing and stock stat, then you aren't out any parts costs if it's not the issue now when you put a Mishi in later before winter. Plus if we're swaping parts, a t-stat is the cheapest one short of a new degas bottle cap to start with. A cap isn't a bad idea, especially if your's is the original. The seal gets old in them. P/n for that is 9C3Z-8101-B
This is the p/n stamp on the housing. The C91 housing was the one that wasn't supposed to have problems, but either will work apparently:
https://www.ford-trucks.com/forums/1...l#post15160768
Degas Coolant Bottle Cap - Riffraff Diesel Performance
Two things you could do that don't cost money. One is set up a temporary override setup for the fan clutch. You can ground (read:GROUND, not power) a wire in the fan clutch wiring connector, and it should command the clutch to lock up 100%. If you do that, and you don't hear the fan while starting from a stop, then I would call that a positive on a failing fan clutch.
https://www.ford-trucks.com/forums/1...hich-wire.html
The second would be to wire in the high-idle mod using the BCP wire (purple/green). With my original snow plow fan clutch using this high idle would lock the fan clutch in, and I'd normally get at least one start where I could hear the fan locked in if I started driving imediately after kicking it out of high idle:
https://www.ford-trucks.com/forums/4...-switches.html
Honestly though, if you have access to an Android phone or tablet, buy the Torque Pro app for $5 and find a bluetooth OBDII adaptor, and just read the fan speed and clutch lock up PIDs. Otherwise it's still all a guess IMO.
I'm not saying it's the stat because 200* isn't unreasonable for a stock 190* stat. But since it did come after a flush, there's a chance that it could be sticking. This is going to sound odd, but 200* is actually better than the OEM stat set at 190*. Many people have changed to a Mishimoto 200* stat, it doesn't cause higher temps (past the higher base set point) because it opens fully by the same point at the stock stat, and it makes winter performance significantly better. I used to run a grill cover to keep temps above 190*, I don't bother anymore.
https://www.amazon.com/Mishimoto-MMT.../dp/B00OBEP7AY
https://www.ford-trucks.com/forums/1...hermostat.html
I can't find the part numbers, but there was an issue with the Mishi stat fitting into some t-stat housings. I had the wrong p/n stamped on my housing, so I ordered a new housing with a stock stat in it. You could check to see if your housing is the correct p/n, if it's not order a new housing and stock stat, then you aren't out any parts costs if it's not the issue now when you put a Mishi in later before winter. Plus if we're swaping parts, a t-stat is the cheapest one short of a new degas bottle cap to start with. A cap isn't a bad idea, especially if your's is the original. The seal gets old in them. P/n for that is 9C3Z-8101-B
This is the p/n stamp on the housing. The C91 housing was the one that wasn't supposed to have problems, but either will work apparently:
https://www.ford-trucks.com/forums/1...l#post15160768
Degas Coolant Bottle Cap - Riffraff Diesel Performance
#10
I have 47,000 miles on it now. It seems like the ECT is 195 or so cruising and then gets to maybe 205 when I get on it. I'm going to take it up I70 this weekend and see how hot it gets. I will report back.
#13
Im curious to see how it does in the mountains this weekend on a very long sustained grade. I have to know how it does before I hook up a trailer and pull a Jeep to Moab!
#14
Update!
Update! I put the truck to its hardest test to date with me. I left Denver and drove to Breckenridge, hauling a full tank of fuel and about 600 lbs of cargo, so basically nothing.
I pushed it pretty hard, mainly passing people going up I-70 towards the Eisenhower tunnel from Denver and the ambient temperature was about 75 F. The hottest it got was 208 F coolant and 221 F oil temp.
I could really see when the fan kicked on full blast and I was amazed how quickly it brought the temperatures down. Like, not even a minute, maybe 30 seconds and the coolant temperature started dropping in 2 deg F increments, from 208 F to 195 F. 2 degrees, boom, 2 more degrees, bam, all the while staying into the throttle. So, I think my rig is good. I appreciate everyone's help.
I pushed it pretty hard, mainly passing people going up I-70 towards the Eisenhower tunnel from Denver and the ambient temperature was about 75 F. The hottest it got was 208 F coolant and 221 F oil temp.
I could really see when the fan kicked on full blast and I was amazed how quickly it brought the temperatures down. Like, not even a minute, maybe 30 seconds and the coolant temperature started dropping in 2 deg F increments, from 208 F to 195 F. 2 degrees, boom, 2 more degrees, bam, all the while staying into the throttle. So, I think my rig is good. I appreciate everyone's help.
#15
UPDATE
Update for those searching on this topic of fan operation and coolant temperature...
I was towing my Jeep (total around 7,000 lbs including trailer) this weekend. Outside temperature was 87 F and on the highway going up hills, my coolant temp was around 205 F and the oil temp was typically 10 F higher around 215 F. On hills traveling at 70 mph on a long and steady grade, the oil temp would get up to 220 F and coolant temp would get up to 210 F. Once coolant temp got to 210 F, the fan would kick on (could not hear the fan in the cab) but I could see the coolant temp drop in 2 degree F increments, probably 2 degrees every 5 or 10 seconds, and oil temperature would subsequently drop downwards. This was all on a steady uphill grade, oil temp would drop on the grade following coolant temp with deltas never being greater than 11 degrees F. My typical coolant and oil temp delta, unloaded at 60 mph on the highway is 7-8 deg F (190 F coolant, 197 F oil). All is well!
I was towing my Jeep (total around 7,000 lbs including trailer) this weekend. Outside temperature was 87 F and on the highway going up hills, my coolant temp was around 205 F and the oil temp was typically 10 F higher around 215 F. On hills traveling at 70 mph on a long and steady grade, the oil temp would get up to 220 F and coolant temp would get up to 210 F. Once coolant temp got to 210 F, the fan would kick on (could not hear the fan in the cab) but I could see the coolant temp drop in 2 degree F increments, probably 2 degrees every 5 or 10 seconds, and oil temperature would subsequently drop downwards. This was all on a steady uphill grade, oil temp would drop on the grade following coolant temp with deltas never being greater than 11 degrees F. My typical coolant and oil temp delta, unloaded at 60 mph on the highway is 7-8 deg F (190 F coolant, 197 F oil). All is well!