ECT's After egr & egr cooler removal - Ford Powerstroke Diesel Forum
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Old 08-24-2011, 05:41 AM
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ECT's After egr & egr cooler removal

I have a 2005 F350 that I am considering removing egr/cooler. I tow 14,000lbs with it often. I would like know from some of you that have done this, how much the removal ended up lowering ECT's towing loads similar to mine.

Thanks
Jimmy
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Old 08-24-2011, 05:53 AM
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None. After the EGR delete, you won't see a drop in ECT.
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Old 08-24-2011, 06:07 AM
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Originally Posted by Lilpooh View Post
None. After the EGR delete, you won't see a drop in ECT.
no difference t stat and fan operation control coolant temp
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Old 08-24-2011, 07:49 AM
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ECT is controlled by the thermostat. Removing/deleting the egr/egr cooler has no effect on that.

You will however likely find a small increase in EGT. When the egr is operating it alows some portion of the cylinder to be filled with spent exhaust gasses which do not contribute to combustion. For example lets say an arbitrary 20% exhaust gas is in the cylinder at some point in time. That means that the cylinder has an 80% charge capable of burning and making power and the proper fuel is injected to burn this 80% charge.

When the EGR is deleted at the same point in time as the above example the cylinder is filled 100% with fresh air suitable for combustion and so more fuel is injected to burn the additional 20% fresh air. The result is a cylinder firing with more energy and a hotter charge from the add'l air and fuel.

HTH
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Old 08-24-2011, 07:55 AM
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Maybe this is the reason why the confusion??
This is directly copied from a new forum sponsors website. Their FAQ section on the page where they sell EGR delete kits:
See anything that stands out?

Quote:
Q: I have a stock 6.0L Powerstroke and I am currently not experiencing any problems with the EGR that I am aware of and I have never checked to see if my EGR valve is clogged. Is there any real benefit to getting the EGR Delete now?
A: If you are not having any problems with your EGR now you do not need to replace it. However, if you want to prevent the chance of EGR going out and want to lower coolant and oil temps, I would recommend using our EGR Delete Kit. Also, there will be a slight gain in fuel mileage and horsepower.
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Old 08-24-2011, 09:46 AM
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So referring to what pgreen said, that sponsor is saying the opposite?
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Old 08-24-2011, 09:53 AM
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Well, all I will say is that they became a sponsor here yesterday, and that I disagree with every statement that they made in response to that question.
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Old 08-24-2011, 10:36 AM
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well i got the egr delete and now i find my ect running hot. especially when i tow.... but even just riding around in the city in the afternoon, my coolant temp runns hot. another problem which has occured is my ac wont work when i sit and idle for awhile, and my coolant temp starts rising again. so could this increase in ects be from egr delete??????
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Old 08-24-2011, 10:58 AM
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Quote:
Originally Posted by 85pickup4x4 View Post
well i got the egr delete and now i find my ect running hot. especially when i tow.... but even just riding around in the city in the afternoon, my coolant temp runns hot. another problem which has occured is my ac wont work when i sit and idle for awhile, and my coolant temp starts rising again. so could this increase in ects be from egr delete??????
Sounds like your fan is not running properly, especially the AC bit as the condenser coils are in front of the radiator and require the fan to be running to properly cool.

Check the fan wiring harness connector at the top drivers side of the fan to make sure it's connected. If it is, take it off and reconnect it to make sure its seated properly.
If it is seated properly, and that fan is not blowing like the dickens with your AC on and engine temperature over 210ish, then your fan clutch is shot.

If the harness is disconnected, the fan will spin, but very slowly as the clutch is not engaged, and your engine will heat up when you're standing still, and your AC will get warm when you stop moving forwards.

Ask me how I know:


Last edited by Dicion; 08-24-2011 at 11:04 AM.
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Old 08-24-2011, 11:19 AM
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Quote:
Originally Posted by Dicion View Post
Sounds like your fan is not running properly, especially the AC bit as the condenser coils are in front of the radiator and require the fan to be running to properly cool.

Check the fan wiring harness connector at the top drivers side of the fan to make sure it's connected. If it is, take it off and reconnect it to make sure its seated properly.
If it is seated properly, and that fan is not blowing like the dickens with your AC on and engine temperature over 210ish, then your fan clutch is shot.

If the harness is disconnected, the fan will spin, but very slowly as the clutch is not engaged, and your engine will heat up when you're standing still, and your AC will get warm when you stop moving forwards.

Ask me how I know:

Also, there are some strategies that prevent the fan from reaching full RPM when you disconnect the EGR valve electronically.
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