Thread: 2.2 EGR Valve Coolant Control

Further to Beery's question...is it possible to blank / close the EGR on a Puma 2.2 without getting a remap and without dash light coming on?

To answer your question, Zeros. No, the ECU is too clever for that apparently. It has to be remapped to not call for egr.

Originally Posted by Beery

To answer your question, Zeros. No, the ECU is too clever for that apparently. It has to be remapped to not call for egr.

Are you thinking of complete egr delete? Including removing the hardware? And remove the cooling piping as well?


I have a remap and was told better to leave the hardware functional as if ever the engine temp is too high, egr can be used as a method to lower engine temperature

Cheers

Originally Posted by martnH

Are you thinking of complete egr delete? Including removing the hardware? And remove the cooling piping as well?


I have a remap and was told better to leave the hardware functional as if ever the engine temp is too high, egr can be used as a method to lower engine temperature

Cheers

I'd like to remove it, but thats not really why I'm asking. I'm wondering if there's a constant flow of coolant because if so, a significant amount of coolant would be bypassing the radiator, like is already happening with the heater valve.
I'm looking at it as a possible way to increase engine cooling capacity in hot weather by putting a single heater valve in the hot supply hose.

I've heard it before but I don't for the life of me see how EGR can can help cool a diesel down. That would best be done by limiting engine power, which it already does at high temps.

EGR definitely cools the combustion process by taking up the space of combustible air with general ****
His reduces EGTs which would reduce engine heat loads

The benefit though in my opinion is not worth the cost of pouring carbon and **** into your engine

From my reading of the WSM and considering that the cooler is straight through no valve I would guess that it is simply an open circuit

Steve

Originally Posted by roverrescue

From my reading of the WSM and considering that the cooler is straight through no valve I would guess that it is simply an open circuit

Steve

I wonder then why coolant would pass through the EGR valve before going to the cooler.
Maybe there's a water jacket in the valve to stop it from overheating.

Originally Posted by Beery

I'd like to remove it, but thats not really why I'm asking. I'm wondering if there's a constant flow of coolant because if so, a significant amount of coolant would be bypassing the radiator, like is already happening with the heater valve.
I'm looking at it as a possible way to increase engine cooling capacity in hot weather by putting a single heater valve in the hot supply hose.

I've heard it before but I don't for the life of me see how EGR can can help cool a diesel down. That would best be done by limiting engine power, which it already does at high temps.

The egr let exhaust gas into the inlet manifold and this displace certain amount of oxygen in the chamber (I.e. choking the engine

And this will lower the cylinder temperature because less air less bang...

Originally Posted by Beery

I wonder then why coolant would pass through the EGR valve before going to the cooler.
Maybe there's a water jacket in the valve to stop it from overheating.

I may be wrong
But I think the cooling in the egr is actually for the recirculated exhaust gas

So I think the coolant will be constantly running there but if the valve is closed, there is no high temperature exhaust gas to be cooled to won't have any effect?

Cheers