Defuel question????

[alwil]

This is kind of a broad question but I would like to know what sensors would cause my truck to defuel?

[cliford]

that would be your map sensor. it monitors your boost levels and when it gets to 22 or 26ish. somewhere around there it tells the computer hey i dont think this is safe easy on the fuel.

[alwil]

is there a way to test it?

[bismic]

You begin to defuel on coolant temperature at 221 degrees F according to the PC-ED manual; on oil temperature at 253 degrees F; at 4000 rpm's; and at 95 mph.

cliford -
I was not aware of the MAP sensor being part of the defuel strategy. Do you have a reference for that?

[cliford]

Originally Posted by bismic

You begin to defuel on coolant temperature at 221 degrees F according to the PC-ED manual; on oil temperature at 253 degrees F; at 4000 rpm's; and at 95 mph.

cliford -
I was not aware of the MAP sensor being part of the defuel strategy. Do you have a reference for that?

Is this boost fooler worth it??

yea just use the search function at search boost fooler.

Originally Posted by alwil

is there a way to test it?

what do you mean test it?

[alwil]

Does this apply to a 6.0L also? or just 7.3L

[Dave]

Originally Posted by cliford

that would be your map sensor. it monitors your boost levels and when it gets to 22 or 26ish. somewhere around there it tells the computer hey i dont think this is safe easy on the fuel.

Originally Posted by cliford

Is this boost fooler worth it??

yea just use the search function at search boost fooler.



what do you mean test it?

Cliford's info is 7.3 only. It has no bearing on your truck

[cliford]

man im horrible at looking at what section things are posted

[alwil]

Originally Posted by bismic

You begin to defuel on coolant temperature at 221 degrees F according to the PC-ED manual; on oil temperature at 253 degrees F; at 4000 rpm's; and at 95 mph.

cliford -
I was not aware of the MAP sensor being part of the defuel strategy. Do you have a reference for that?

I have the same power cold as I do warmed right up, my coolant has never gone that high on WOT.....I know my EOT sensor is failing cause it reads 50* cooler than my ECT even after an hour of highway driving.

Do I need a boost fooler for a 6.0l?

[Dave]

Originally Posted by alwil

I have the same power cold as I do warmed right up, my coolant has never gone that high on WOT.....I know my EOT sensor is failing cause it reads 50* cooler than my ECT even after an hour of highway driving.

Do I need a boost fooler for a 6.0l?

No you dont need a boost fooler. But either you need a new EOT sensor or EGR cooler.

Acceptable spec is within 20 degrees of each other