So oil cooler is fine, I've got the Mishimoto 200°thermostat.
As we've all read I'm sure some are having maybe notmover heating issues but are running warmer than they would expect this time of year.
I'm kinda in 4he same boat but only at certain times. Today in stop and go traffic my ect hit 208 while in traffic (eot reached 209). Once on the interstate running normal ect dropped after about 8 miles back to 202 and eot dropped to 208 which is normal for me with oat in the upper 70s.
My question is do I need or should I need to look at a radiator upgrade or a better then stock water pump. My thinking is that my issue (not really an issue but don't like seeing the ect act that way) is when the vehicle is static (not moving much) after warming up there is not enough flow/enough radiator cooling to keep the ect in line with what the tstat is designed to keep. Again at spead (based on 65mph) everything is perfect---stop and go traffic gives me concern. Am I off base or thinking correctly?

2006 F350 4X4 Mishi 200° tstat, IPR EGR delete/up-pipe

 

The fan doesn't come on until 215 or 217 on full speed. So it does look worrisome to be over 205 idling, sitting in traffic, but rest assured when she does come on, even at idle, it cools things down like crazy fast. I don't think typos will have problems even outside temps over 100 f as once the fan comes on from low to medium, it starts moving a ton of air over the coolers. It does remain to be seen how this 200 degree stat does in the warmer weather and pulling but I don't think you need to run out and get a new larger radiator as yet. I do owpwonder how water pump impellers are holding up and I can see looking into a metal impeller over an plastic one. I tow in hot temps here in the summer but I have not seen the extreme heat soak you guys would get way down south. I have towed fully loaded GCWR, at 40 plus Celsius for extended periods on steep grades and not had a problem with cooling at all. I really wish there was a way I could manually turn on fan var to 85% when at idle or pulling when in extreme hot weather just to be on the safe side. But I have yet to see a sweet mod to th is effect. I would even use on the down hill in engine braking in tow haul and add the fan for the extra hold back and to get the heat out from pulling but alas not as yet available. I think this more than bigger rads would be neat.

 

There is alot of variables to that question,but if I had the spare coin or had better knowledge of this truck when I was putting it back together I would have done a lot of things different. The first is I would have used a all aluminum radiator,and a BD water pump and a factory Ford fan clutch. I cheeped out on all of the above and totally regret it. Also make sure that all the foam pads and dust shields are in place,this make a BIG difference in the cooling of the truck in high heat and towing.

 

I wish I did have the time and coin when I did the egr delete to just replace the water pump with a BD unit. It just bugs the crap out of me that this only comes up when getting to temp, shutting it down for a few hours, getting to temp again while in traffic. I can pretty much guarantee if I did the above and didn't hit traffic it wouldn't do it. I would it 202 ect, eot would get to 206 or 208 and be rock solid--iit's like it has a mind of its own.

 

Mine is all over the place also, 197-206. Rock solid at freeway speed 202. It should work just the same in 100* weather... when it hits the mark, it should open.

 

Have you taken out your radiator and innercooler and power washed it? A lot of garbage can get caught in there. Had this happen to a 05. Didn't look bad from the fan side, but the front was near plugged. Before spending big money pull it and clean the rad and the innercooler.

 

Guess that would be the best bet--make sure everything is clean and see how that does. It makes sense.

2006 F350 4X4 Mishi 200° tstat, IPR EGR delete/up-pipe

 

Your temps are fine and perfectly normal IMHO, especially with a slightly higher temp thermostat. The cooling system on these engines is more than adequate for this engine. If you get what you consider "too hot" sitting in traffic, flip your AC over to max and the fan engage sooner. I bet you'll see a difference in your temps.

 

I'll try that one!!!

2006 F350 4X4 Mishi 200° tstat, IPR EGR delete/up-pipe

 

I have a (new to me )2004 that I just put an Edge Insight CTS on and I have gotten 210 ECT and 225 EOT just driving around in 70 to 80 degree weather. I found out in its previous life it was used as an oilfield service truck. Do you think I should pull the radiator and intercooler and try cleaning them? Truck had two injectors and EGR valve replaced in 2012 by Ford dealer, work order stated that coolant was replaced at the time. I know the coolant is not gold or red its green.

Sharn

 

Sounds like your due for a chemical flush and then oil cooler.

 

What 69cj said.
Your issues is a bit different

2006 F350 4X4 Mishi 200° tstat, IPR EGR delete/up-pipe

 

Get rid of that green coolant! I'd be a little concerned about the 210ECT, maybe a t-stat change is in order. Are you running the 200* t-stat or a stock unit?

David,
Be careful using a power washer on the radiator, it could hurt the fins, they are aluminum and I've heard of guys doing this and tearing it apart. Maybe something lower pressure to blow the crap out?

The temp's your getting match mine as well, looks fine to me.

 

Yep--I got a washer that has somelower pressure.

2006 F350 4X4 Mishi 200° tstat, IPR EGR delete/up-pipe

 

Agreed, these temperatures sound relatively normal. Once the thermostat is open, it is up to the fan to control fluid temperatures at idle. On the highway, once warmed up, coolant temperatures should remain right around our activation temperature (give or take 1-2 degrees) as airflow through the radiator should be providing cooling.

If temperatures become excessive on the highway, please let us know. If temperatures continue to rise at idle (over 220F), this could be a fan related issue.

Let us know how this progresses!

-John

Thanks, great tip!