I here ya Travis, but that T500 should also be more than enough pump and doesn't seem to be.

Don't you think the few "bucks" I felt at the top of the hills was the res running dry?

 

I really don't think the res is running dry. I would be more tempted to look elsewhere if it were my truck giving these problems. Like I said though, I do hope that fixes your bucking problems and it will open my eyes a little bit for future issues.

What I think is happening is either hot oil giving you fits (because extended high ICP will drive oil temps way up) or possibly some injectors that aren't happy above say 2800psi or so. Hard to say without being in the truck. Diagnosing over the interweb sucks sometimes.

 

I hear what you are saying about doing this online Travis. I can kind of clear up a little more for you. I never saw over 190 on my oil temp, even on the hills. I do have a seperate oil temp gauge. I also see 2900-3100 psi a lot. When I have the cruise set and come to the base of about any hill it will hit those numbers, then may relax some.

Maybe that helps, maybe not.

 

Also this only happened on those two hills. One is a 6.5% grade about 1 1/2 miles long, the other is a little steeper but only about a mile.

 

Does it buck when the cruise is set? Cruise off? Or does it not matter whether the cruise is set or not?

 

Doesn't matter. It will buck worse with the cruise set if I keep it on a big hill as the truck will try and push it harder than me.

 

Northern wi now, heading to Omaha. Don't want to derail this thread, it's too interesting! Hope you get it figured out Darin!

 

My engine is basically stock but I can see 230F coolant/engine oil/tranny oil when towing in hot weather in the hills.


I think these are normal when the engine is working hard.


The engine oil pressure stays 50 psi or above from the LPOP, indicating the 15W40 Rotella's viscosity is taking it in stride.

 

I ran rotella before and it is good oil, but it won't be real happy at 220 for very long. I now run schaeffers 7000.

 

My oil temp is always between 220° and 227°. Yesterday I had terrible head winds and when I was hitting 3000 to 3100 DC% I was feeling a slight bucking. First time I noticed it. My DC% is 45-50 when I'm at those pressures. Only in that hot tune from PHP did I see DC% shot up to 70.

I wonder why Joey thought it was just a good idea, with that oil cooler I had on the mule, to see 15 psi more oil pressure? I'm tempted to put that back on with the water injection.

 

I haven't heard from Joey all week, he must be real busy or was/is gone for a few days. I'll send another email this weekend if I don't hear from him.

Glenn, do you run that hot of temps even on a nice day?

 

Yes I do, the oil temp is always in that range. The mule was even hotter before I put on the oil cooler. I wonder why I'm 30° hotter then you?

 

I am running a 180 tstat, so that helps. I'm guessing your water temp is close to that too? My water and oil temp run pretty close together so this time when it was cooler out, both temps stayed at 180-200 max. I run right with your temps when its warmer/hot outside.

 

The lowest tstat I could find was a 190° for the IH wp. My coolant is 210° when my oil is in the mid 220°'s. I'm afraid to look on Joey's site to see what duals would cost but I have to back out because of EGT's anyway. So, I don't see making any changes would do me any good except for water and oil cooler.

My bucking was slight, like when the tuner has the throttle response up to high, so in cruise it bucks.

 

FWIW, I run those same EOTs when towing. I stay around 195-200 empty, but its always been that way. I am starting to experience bucking issues at WOT after doing this long trip last week. If I stay in the throttle half way, it pulls great. If I ask for more, it'll pull, buck,pull, buck....weird...never done that before. Anyways, I guess I gotta start diagnosing here sometime between homework and other life stuff. Sorry for the derail...back on track!