Regeneration

[cssutto]

I am mystified.

I see many complaints about regen.

I have a 6.4 job #2 that I have put 5,000 miles on in 6 weeks.

I have never seen a regen. I have never seen any message light telling me one is taking place.

This is my first 6.4, but it is my 5th F250 or F350 diesel so I know a little something about a diesel engine.

Also, I flew for 40 years, so I do watch the instuments constantly. There is no way that I would have missed a message.

I do very little city driving, but not nearly so much high speed interstate as I used to. I drive mostly state highways at 45 to 65 MPH. Very little idling. Pull a 4 horse trailer 250 miles per week, sometimes a little more. The route with the horse trailer a 20 minute leg up a 9% grade pulling 35 PSI for probably 15 minutes out of the 20 minutes. Maybe this cleans things out. Maybe ?

So what gives? Is it a fact that there is a message for regen or the job #2 or was this eliminated?

CSSJR

If we do not wish to lose our freedom, we must learn to tolerate our
neighbor's right to freedom even though he might express that freedom
in a manner we consider to be eccentric.

[BigIslandBoy]

I have 6.4 job 2 and have not seen the message either. I have 3700 miles on the OD. A couple of times while driving on the hwy I saw my mpg's drop on a flat stretch so I assume I was in regen and once it went into high idle when I parked so I know it is happening, but I don't get the message in the display.

[cssutto]

For several years, Fords have had the high idle feature for several different reasons. My '99 7.3 had it and would go hi idle on cold mornings after the engine began to warm up.

I have had the 6.4 go into high idle under the same circumstances, but it seemed to be for the same reason as the weather and the temps were similar to what caused it with the 7.3.

Also, if what I have seen is all there is to it, there is no reason for anyone to complain because the minute I touched the brake or anything else, it goes back to normal RPM immediately.

CSSJR

[BigIslandBoy]

Well I don't think its weather related, in Hawaii its 70-80 year round. You are right when step on the brake it goes back to normal but if it is not done regenerating and is still idling it go back into high idle. I think the system is working fine. I think the issue is that it is using more fuel and all epa stuff is restricting making it less efficient. Just my 2 cents...

[TwinTurboStroker]

Originally Posted by cssutto

For several years, Fords have had the high idle feature for several different reasons. My '99 7.3 had it and would go hi idle on cold mornings after the engine began to warm up.

I have had the 6.4 go into high idle under the same circumstances, but it seemed to be for the same reason as the weather and the temps were similar to what caused it with the 7.3.

Also, if what I have seen is all there is to it, there is no reason for anyone to complain because the minute I touched the brake or anything else, it goes back to normal RPM immediately.

CSSJR

If you do very little idling and very little city driving, chances are haven't even noticed the truck going into regen mode. Believe me if your truck hasn't seen regen in 5000 miles you would know it. The DPF would be so clogged that I'd be surprised if your truck would even run. I believe it was half through Job#2 that the regen message was loaded on the 6.4s. I have never seen it on mine or at least for the first 6K miles it had regen .....as far as the high idle on cold mornings, thats not regen. Its doing exactly what you said it should do, and thats warm up the truck. Yes the RPM will go down if you hit the brake pedal, same as regen. I know this because the first cold morning I had here the truck kicked up the RPMs and I was horrified because I thought it was going into regen, but thankfully it was just the high idle kicking in

[TwinTurboStroker]

Oh and also when the high idle kicks in its about 900 to 1000 RPMS whereas, regen is closer to 1200-1300 RPMS

[cssutto]

There are other weird things the computer does. For instance, if you intentionally leave your lights on with the engine not running, after the battery falls to a certain point, the lights will turn off.

I found this out when using the lights to feed my animals at night. I believe there is also a high idle setting to keep the battery charged if you leave the lights on with other equipment such as the heater, air, etc.

So high idle alone does not convince me.

I expect that if you leave the air on, the engine will speed up every single time.

I have not tired that, as we have not had that kind of weather yet, but I do know that if I stop at the barn on a cold morning on the way out, the engine will speed up.

Not to beat this to death, but to try to determine when and if either of us has had a regen.

CSSJR

[cssutto]

Julian:

My last was being composed as yours was sent, so they crossed. Thanks for the reply.

I may have seen 1200 or so one time, but I am not really sure of that so I will watch for it.

CSSJR

[TwinTurboStroker]

Originally Posted by cssutto

There are other weird things the computer does. For instance, if you intentionally leave your lights on with the engine not running, after the battery falls to a certain point, the lights will turn off.

I found this out when using the lights to feed my animals at night. I believe there is also a high idle setting to keep the battery charged if you leave the lights on with other equipment such as the heater, air, etc.

So high idle alone does not convince me.

I expect that if you leave the air on, the engine will speed up every single time.

I have not tired that, as we have not had that kind of weather yet, but I do know that if I stop at the barn on a cold morning on the way out, the engine will speed up.

Not to beat this to death, but to try to determine when and if either of us has had a regen.

CSSJR

Your right if the truck is not running and you have the radio or lights on the truck will turn them off once it reads that the volts from the battery get down to certain point, its a feature built into the truck. I tried to find the actual high idle mod write up the Marc did where you can flip a switch and bring the RPMs up to run a PTO, winch, warm the truck faster, or whatever requires you to kick up the RPM, but I think it got delete cuz he not a "tech" anymore .....

Originally Posted by cssutto

Julian:

My last was being composed as yours was sent, so they crossed. Thanks for the reply.

I may have seen 1200 or so one time, but I am not really sure of that so I will watch for it.

CSSJR

No problem, the good thing is that your truck is doing what its suppose to do and thats to make it where you can't tell if its in regen......your one of the lucky few

[d7rxr]

The high Idle thing is to warm it up, but I've heard as well to keep it from coking up and to build oil pressure for the top half of the engine.