Ever since having the EGR delete done, the oil temp has been LOWER than the coolant temp. I am assuming this is bad info from the sending unit? They are reading with in a degree of each other at start up, but when at operating temp the gauge will read lower. Before the EGR delete I had a delta of about 4-7* oil hotter than coolant.
View 1 RepliesCoolant temps getting much higher than oil temps under load. Is there any problem that could cause this other than a bad temperature sensor? Reading temps with an Edge CTS 2 monitor. Think I'm going to hook up a mechanical gauge in the morning and see what it shows.
View 8 RepliesI've been searching for a while now but have not found an exact match to my problem.
So, Yesterday I was pulling a large load home (15K lbs) over flat land/small rolling hills and I experienced a coolant temp spike. And I am trying to figure out what caused it. I was traveling 65 mph about 2k rpm and 20lbs of boost, I was motioning the ECT, EOT, TFT, and Fan Speed via my scanguage and 99% of the time the ECT was in the 209-220 range, once it got up to 220 the fan would come on and the ECT would drop to 209 ish pretty quickly.
However, twice the ECT shot up from 215 ish to 240 within seconds then the dash indicator said check coolant temp then the fan came on and cooled it down to 200 within seconds, I did lose about 1/2 gal of coolant. So today I'm going to get a new degas cap (still OEM original) and continue to monitor the situation.
My EOT ECT delta has been a constant 10-13 degrees for the 3 years i've been monitoring it so i believe my oil cooler is still functions within spec and all my cold soak temps are within a degree or two for various ambient temps (20 -80) so all my sensors should be good.
Also, tonight I'm going to pull the EGR valve and check if there is any coolant in the intake, but if there is not, where should I start looking and what should I start worrying about e.g. head gaskets?
This is the only 6.0 I have owned. My tranny temp (with the Torque Pro) is pretty much always the same as my ECT. My ECT will move, and less than 2 seconds later, the tranny will move to the same temp. Is this normal? I was expecting lower tranny temps, but maybe it should be the same because of sharing the radiator.
View 11 RepliesThe truck has been just terrific, mostly used for towing our travel trailer. Earlier this year i developed a leak and lost 3 quarts of oil before I caught it. I would think with 15 quarts in her this shouldn't have been too big a deal. However, I am now experiencing 10-15 degree swings between ECT and EOT. Before I give the particulars, yes, I have had three new thermostats, two Ford and one brand X.
Anyway, coolant temps are 184-200 depending upon load, terrain, etc. At the same time, oil temps run 205-230. There is no oil cooler to get plugged up. She's got 120K on the clock, doesn't burn oil, no disappearing coolant. I am concerned about blowing a head gasket or other serious damage at these temps, but don't have a clue where to start? Yes, the fan does come on, but still this seems plenty hot.
Bought this truck, and the engine coolant temp gauge does not work, so I replaced the sender, still don't work.
View 8 RepliesI have an 04 F350 and I was wondering if the fan is supposed to be locked up when the A/C is on. In max A/C with the fan on 3 it's barely keeping cool in the 95 degree heat we have been having. If I rev the engine I don't hear the fan noise like I do when the coolant temp hits 218 and the fan roars. Freon was replaced several months ago, along with receiver/dryer and orifice tube when I did the HG's. The A/C shop drew a vacume and did not find any leaks.
View 7 RepliesWhat the coolant temp should be around after plugging in the block heater overnight? Not looking for an exact measurement since this can be affected by OAT and the length of time it has been plugged in. But when it's -15 to -20F this weekend I was wondering what to expect.
View 13 RepliesI have a 2006 350. When I am pulling my camp trailer (about 12,500 lbs) up a grade I hear a fan or blower turn on and I get a high pitched squeal. It will also have a beep and my in dash display will say high engine temp. I have a bullydog pmt programmer (i tow with it in stock mode) the display will show my coolant temp at about 180 degrees. If I pull over and let it idle for about 2 minutes the warning clears and the temp gauge returns to normal. the display reads about 180 degrees the whole time this goes on. I know the engine is not over heating so why do i get this warning and squeal?
View 4 RepliesI drove my 99.5 7.3 F-350 1 mile to a friends and hooked it to the OBDII to get a code for my abs light.it had not been drove all day. we hooked into the pcm and he noticed the temp at 375* it was idling. is this right he didnt think it should have been that high???Will the engine coolant temp sensor, if it were bad,show a high temp of 375*? On the OBDII it showed a temp of 375* .....
View 14 RepliesAfter buying and installing the low temp thermostat, fan switch and green top sensor, I'm still encountering boiling in the line and a temp of 3/4 of the way when at idle. My coolant mixture is about 70/30 and unfortunately I had to use a temporary fix of the prestone universal coolant mix due to the dealer being closed and I didn't want to add more water
What would be the disadvantages of running straight g12 coolant? My issue is boiling and I figure the more coolant and less water, the less chance of boiling to occur.
Plugged in my ScanGaugeII on a whim, it's usually on my 6.5 Suburban daily drivers, but was curious to monitor a few things on the 7.3
Noticed this right away, coolant temp reading a solid -40*F and never budging.
I was going to order a ECT gauge and was wondering where to mount the sensor. I have already used the port under the T-stat for the coolant filter. The gauge sensor is a 1/8 NPT. Would the block drains be a good location, or is there another location that will work.
I know the coolant filter housing has a port, but I would prefer the sensor be on the motor.
I know they're supposed to be within 15 deg of each other. How bad is this? Pulling a small trailer with a polaris rzr on it. Running 75mph
View 14 RepliesThis is not on my truck. This is on my buddies 04 we just did the egr delete and oil cooler and a bunch of other stuff to.
Coolant temp doesn't go past 170 which I assume a new thermostat will fix this issue no problem.
but, the oil temp never goes past 140 no matter what driving for an hour at 70 and it doesn't change.
Bad sensor? Or would replacing the thermostat bring the oil temp up to where it should be?
I recently observed coolant temps of up to 217 degrees as reported by my mini max and oil of 230 as reported by the dash while towing 9000 pounds from San Diego to Las Vegas on the 15 going up the 16 mile mountain grade. My temp gauge on the dash never moved a bit, it stayed in the same spot from 199 to 217 so I assume its not too hot. My mini max defuel setting has the coolant temp at 220? I slowed down and tried to keep it under 210.
View 8 RepliesTo start off. I have a 2004 F350 with the 6.0 in it which just had a top end rebuild done on it due to the head gasket blowing on it. During the rebuild the EGR cooler was also deleted, ARP head studs, Heads were milled down to make them flat (shop said they had to take 9 thousands off to do so), new up pipes installed, new back pressure sensor installed due to the plug head snapping off, new glow plugs, new glow plug rail harness, oil rail rebuilt due to bad o-rings on the ball tubes, injectors were installed with all new seals and had polished the spool valves hoping to avoid stiction (however its spelled can never remember), and lastly the EGR was deleted electronically with tuner. Also had to get 2 new batteries as they were stone dead and would not take a charge. And had to get a new alternator due to low output. Not sure if the alternator killed the batteries or the batteries killed the alternator either way it needed replaced to.. Unfortunately after i got that fixed i had to get a new starter as it died 3 days later.
Ever since its gone back together Ive had a consistent intermittent miss with the truck. Ive searched every article i can find but seems most complain about misses when cold. Mine is the exact opposite as it only does it once the engines up to normal operating temp. It accelerates hard and fast like it has no issues. While its cold it doesnt miss at all. Once its warmed up sometimes while cruising it will feel like its missing on every cylinder or better description would be as if your driving on a cobble stone road.. If you mash the pedal for a couple seconds till it kicks down and raises the rpms it stops.. Its most prevalent at idle though.. You can literally hear the difference in the engine when it starts missing. Truck will shake as if its got a large lopey cam. Odd part while sitting at idle it will cycle back and forth between running smooth and missing. But same with at cruise as soon as you get on the throttle it goes away. If its doing it while sitting idle at a light, it will take a couple seconds once your on the throttle for it to smooths out. But always does.
Ive tested the Ficm hot and cold, KOEoff and KOEOn.. getting a steady 48v from the main board.. Scan gauge says the Logic boards reading steady 13v... Also from the scan gauge it says my ICP pressure is in the 640 range at idle (full throttle highest ive seen is 3600psi so dont think its a pressure leak) and volts bounce between .80-.90.. but oddly once it starts missing the ICP pressure jumps up 20 psi.. IPR at idle reads 23.5-25.5.. at cruise its up around 45ish.. fuel pressures said to 70 psi.. which its usually around that most times, cruising itll be around 66psi. I had 3 injectors replaced not this past spring but the year before (ironically same symptoms).. Injectors 5,7,8 were replaced then.. ICP sensor was also replaced at the same time as it split and shorted out the connector which was the initial reason i took it in that time since it was dumping the oil on the ground.
I dont have any way to perform a cylinder contribution test and after spending 6K on a rebuild I really cant afford to take it in to have someone else do it. A local guy was able to scan the truck for me but he couldn't do the contribution test either but was able to buzz test them. Everything passed there but we also found some hidden fault codes my code readers did not find. The ones we found hidden said that injectors 2, 4, and 7(again??) are reading low contribution. Of what I've read 2 & 4 sit on either side of 7 in the firing order so have wondered if they're not pulling down 7's results.
I really cant afford to replace the injectors till near the end of next month. Is there anything else I can look at that might actually possibly be causing false readings or intermittent misses only when warm.
My dad's 03 has had some work done after his oil cooler was clogging. New oil cooler, egr delete, head studs etc. The oil temp seemed to run some what high when he got it back. After a couple interstate runs on cold days 15-20 degrees, the water ran around 185 and oil as high as 218 but usually a bit lower. What's going on here? how could this thing be clogged again? It hasn't seem to gotten much worse since we got it back but not better either.
View 8 RepliesSo the other day while towing my 5er my temp alarm on my CTS went off at 220. I let off and it cooled down, but not where it usually runs. Unloaded it will run at 200 where it usually runs at 180 or less. Its an 06 EGR deleted, coolant filter, studs, the works. Water pump? Thermostat? Coolant level is ok.
View 14 RepliesLooking at another 6.0. It's an 2005 with 156k. When test driving it on the scan gauge water temp stayed around 160 and don't believe it ever went above 170 if it even made that. Bad t-stat? Or a more significant issue? The other issue I seen that concerned me, is cruising at 65 for 10 minutes plus to check deltas their was up to a 20 degree difference so I'm thinking plugged oil cooler and bad egr cooler. Temps were 190 eot and maybe 170 ECT. Wasn't sure if the water temp issue affected the results on this reading or not.
View 14 RepliesI'm about to take my ambulance on its first road trip but I'm skeered because the OBDII connector is dead so my ScanGauge doesn't work. The temp gauge always says normal, but several times I have heard the fan kick on for a few seconds when driving in routine conditions. Is that normal with these big vans? Is the weight of the ambulance box so much that the fan has to kick in more often?
Again, when I've heard the fan, it only came on a few seconds. My only experience is with the Fseries 6.0s I've had - when those fans came on, the temp would be at least 205, usually more than 210, and it would run longer. However, those were always pulling a trailer, which I guess is about the same as the heavy ambulance box.
Is there any way to tell whether the engine is running hot besides the truck's idiot gauge?