Interesting Jack

I have never seen this one before.

 

There was a database with a group of people's test data, but it was lost when Webshots screwed everyone over, and the original data went with a hard drive loss. Maybe Mark (Bismic) has a copy in his collection as he was there at the time.

I thought I had written up an explanation recently here, but don't see it. There also was another thread on TDS, but the short of it was I could pass or fail the Ford test depending on how I ran it with my cooler.

The Ford procedure was written as a fast test, but from an engineers perspective was poorly done due to the variables.

The test is to determine how much flow is going through the heat exchanger. The ECT value is there to know the cooling fluid is at temp, then check the hot oil temp to see if it's working. As mentioned in an earlier post, thermal transfer properties get in the way.
The flat road check was an idea to give an owner an easy way to check their cooler. From a dealer service perspective, they can't afford the time.

What they should have done was relatively simple and how any fluidics engineer would have wanted until they worked out the engine light parameters. Your trying to measure the flow. Then measure the flow!

Let the engine cool.
Drain 2 gal of coolant.
Remove the hose between the oil cooler and EGR cooler.
On the EGR cooler, install the special cap.
On the cooler output nipple, install the molded hose, and place the open end in the measuring bucket.
Refill with the removed coolant until coolant starts to flow from the open hose.
Empty the measuring pail.
Start motor and keep idle at 1000rpm for xxx seconds then shut off motor.
Measure volume of coolant in the mastering pail.
If under xxx replace cooler.
If within the acceptable range, reinstall removed components.

But flat road under specfic variables works. But you can't guarantee every dealer is close to a highway even if they allow it to warm in the parking lot.

 

I'm with you on this, im on my 3rd oil cooler and still 20* delta empty. And on this last one, I ran vc9, flushed the system 20 times until it was clear and added elc, been running a filter for 100k miles...waited 3 months after the 20 flushes and installed new cooler. Still have large delta....i just stopped monitoring oil temp lol

 

so do these high deltas on new oil coolers correspond to dorman installed coolers?

 

That's a good question!

 

I am going to replace both sensors tonight from Ford, I know oil temp is a concern at around 250* and its obviously not near that.

I used a Ford oil cooler, I get parts at wholesale so its not a huge expense.....

If it ends up NOT being the sensors I will probably wait until the spring time to replace the oil cooler again.

 

It might not be the oil cooler at fault. It maybe the check valve that you can't get and have to buy the whole housing.

 

I only use ford coolers as well

 

The worst part is I spend more time looking at the stupid gauge then the road!

 

Just wanted to give an update, swapped out both sensors and did the same run, one at 65MPH cruise, and one at 90mph beating it down.

At 90mph the oil temp never went past 205* and the coolant want around 190/191 so 15* delta there.

At 65MPH I saw about a 13* difference coolant was still 190/191* and oil
Temp was right around 203* dropped to 202 once or twice. So I would say the sensor were PART of the issue but then new egr cooler is probably partially clogged already.

Again, this was not on flat ground but very hilly highway, but I wanted to have the same scenario as when I saw the 20* delta.

In the time it took me to write this with the truck idling the the coolant temp is 188* and the EOT is 191

 

I am wondering if I do an oil cooler by pass would make the most sense instead of doing another cooler

 

The first situation I was ever involved with on an oil cooler reclogging was Karl (nylyon) and the second install was fine. At that time he followed the FUBAR Ford procedure of running flushing agent through the cooling system after installing the new cooler. That fun time spanned at least two forums. You should go read that to see all the steps he went through as they are same being mentioned here.

 

its hard to tell from this side the PC but looks like it has the ability to cool the oil


I guess the part that makes me wonder was how Hilly was it?? Plus you was doing 90mph


Im almost thinking if you ran 65mph on flat ground during the Test you would be Fine Tyler


you might be surprised test it out under a more controlled enviroment

 

I agree. It would be worth a road trip. But I'd check at 60 and 65.

 

Just wanted to give another update:

Drove the truck today, again on hilly highways, but kept it @ 60-65mph and I never saw a delta greater then 9*

I will continue to monitor my temps and let you know if any thing changes....

I guess normally doing 80-85mph will HIGHLY effect the deltas