I've read that the exhaust brake helps warm up the engine?

Is this true and if so how,or why would it help warm up the engine?

If it is true do you just push in the button for this to work at idle?

I have the high idle which i use all the time and really like, just curious about the engine brake.

Thanks DJ

 

I put the exhaust brake on my 99, 03, 05, factory on my 07. It does help warm up engine quicker, puts more of a load on it. I tow a large toy hauler surrounded by mountains couldn't live without it. Was worth the money on all my other trucks, very happy to have factory installed on this new one.

 

If your engine is to cold the e-brake will come on and help warm your truck up but you have to turn it on via the button.

 

Is there any way to program the truck for the e-brake to come on with each startup? I just left it on with my 97 but the 07 turns it off with each cycling of the ignition switch.

 

Currently no. It's a safety issue. You to have to turn it on each time so you cant accidentally have it on under icey/slippery conditions.

 

darn!!!!!!

 

I'll probably never see ice here. I wish the switch could be fixed to not turn off all the time... I find my self driving without it and only realize when I let off the gas.

 

Alright i think i get it. When cold at idle the e break comes on resulting in less compression making the engine work harder (more fuel=more heat) to keep the rpms up. Correct?
Will try this in the morning, it's suppose to be 26 deg.

DJ

 

Unlike a real jake brake this engine brake does not change the compression of the motor. All it basically does is create an obstruction in the exhaust system which increases the back pressure in the engine. So all of that hot exhaust gas is kept in the engine a little longer and helps it warm up quicker.

If you have the 6 speed automatic you may also notice that it doesn't shift into 6th gear until your water temp reaches about 120 degrees.

 

or until the transmission temp reaches 55f.

 

Actually that makes more sense, Thanks for the info. This is my first diesel so i'm still learning. Towed my snowmobile trailer up into the mountains (only around 4000 lb) the other day and man do i like towing with this rig.
I did use the e brake this morning as it was 26 deg along with the high idle. I could hear the e break come on as i was sitting there. Seemed to warm up a hair faster.

Thanks again
DJ

 

the brake will come on at idle if the truck is cold if you listen you will hear a deep rumble .the switch does not have to be on but it doesnt come on enough to slow the truck down trust me i know and if you havnt brought you truck in for the recall dont.unless you want you mileage to be cut in half. i know i should have stayed with the 5.9 .

 

o and it has to change the comp. or the truck would not slow down .closing the exst. will send the air back into the cylinder when the valves open and put pressure in the cylinder on the exst stroke.

 

I think its compression on the compression stroke and backpressure on the exhause stroke is what you mean. Compression occurs when the valves are closed. I just took my truck into today for the recall and I sure hope the MPG doesn't get any worse. Was hoping for better.

 

Whatever. Go hammer a potato into your tail pipe and it will have the same effect, call it what you will.

And at least for all of the reports I've seen so far from people that have had the recall, they are either seeing no mpg improvement or a slight one. Yours is the first report I've heard of someone having a negative result from getting the recall done.