Yet another EGR CEL question
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From: NORCAL
Yet another EGR CEL question
Hello, I disconnected my EGR today for fun and drove around awhile, CEL came on the second time I started it, then I came home and reconnected it. I've started it and driven it four times since reconnecting it. CEL won't go away. Question, will it fix itself? Disconnect batteries to fix it? Thanks
2006 F250 4X4 6.0 PSD Kalifornia
2006 F250 4X4 6.0 PSD Kalifornia
Last edited by blub; Aug 30, 2006 at 09:33 PM.
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From: waynesville, mo.
Welcome to fte, you'll find a lot of good information here. I am one of the few that does not advocate disconnecting the egr. With all the flashes and updates on both the older and latest model of the 6.0, the turbo takes information from several sensors to determine vgt position for boost. One of them is egr. When the information received by the pcm isnt "correct" it defaults the vgt to a set value(the vanes no longer move). The set value might be more boost than normal at low rpms (thats why it feels like it has more response), yet it will be less than what would be normal at higher rpms. I believe the egr valve doesnt cause problems, but, a problem has caused the egr to malfunction.
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From: NORCAL
Hi, thanks for the response, I did reconnect it, I just got curious after reading about the EGR and disconnected it to see how it would run, I hooked it back up and now the CEL won't go out. Any suggestions would be appreciated, thanks again. It's an 06 California model PSD
Last edited by blub; Aug 30, 2006 at 10:06 PM. Reason: left out info
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From: NORCAL
Hey again, I just went out and turned my ignition on then off three times and it reset the CEL. No more light. I don't know if that had anything to do with it although it did go out after that.
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From: Roy, Washington
I tried it again.
Originally Posted by vloney
Welcome to fte, you'll find a lot of good information here. I am one of the few that does not advocate disconnecting the egr. With all the flashes and updates on both the older and latest model of the 6.0, the turbo takes information from several sensors to determine vgt position for boost. One of them is egr. When the information received by the pcm isnt "correct" it defaults the vgt to a set value(the vanes no longer move). The set value might be more boost than normal at low rpms (thats why it feels like it has more response), yet it will be less than what would be normal at higher rpms. I believe the egr valve doesnt cause problems, but, a problem has caused the egr to malfunction.
I stopped in about 3 blocks and unplugged it. The turbo lag and lack of low end performance is just terrible. I guess if I was heavy load towing at high boost most of the time, I might leave it plugged in, but I just made a round trip from Tacoma to Kalispel with my old (very old) slide in camper and didn't miss the high end boost at all, and the low end performance is terrific.I have had the egr unplugged since the 1,000 mile mark so I am reasonably sure that it is functioning correctly, it is just not set up correctly.
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From: Florence,SC
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From: waynesville, mo.
fordsd--- just be aware of the issues about the vanes of the turbo sticking, With them not moving from the default, there is more chance for them to corrode in place. Yes, it is your truck to do with whatever you wish, just keeping you informed.
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From: So Cal
Vloney and Bowtie, I have never unplugged my EGR, and truck ran great until the recent reflash for the recall. Now I have very poor low end boost. Took it back and they swear all is normal, throwing no codes, etc. Have never had a CEL. They reflashed it again and now it is even worse. To get to 20 on the boost gauge I am now hitting 3000 rpms. This can not be normal?! Because I am in Los Angeles, we do sit around a lot at stop lights and of course on freeways, could my EGR valve be all clogged up, or maybe sticking turbo vanes? I took one of your advice and floored the sucker on an up hill on-ramp to the freeway last night and ran the RPMS way up (I think it hit 4000 rpms/25 boost) and smoked out a BMW convertible...also left it in the smoke too. Any thoughts?
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From: Roy, Washington
Well then, maybe..
What I will do is plug the egr in on trips and leave it unplugged around town. The dead throttle with egr working is not just annoying, when you have two lanes of cars coming at you and flooring it does nothing for a couple seconds, it can be hazardous. 
If Ford comes up with a flash that will give reasonable low end performance, I will plug it in full time. Does anyone know if the PCM starts working normally upon plug in or do I have to clear the codes first?
If Ford comes up with a flash that will give reasonable low end performance, I will plug it in full time. Does anyone know if the PCM starts working normally upon plug in or do I have to clear the codes first?
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From: Florence,SC
Originally Posted by usroute66
Vloney and Bowtie, I have never unplugged my EGR, and truck ran great until the recent reflash for the recall. Now I have very poor low end boost. Took it back and they swear all is normal, throwing no codes, etc. Have never had a CEL. They reflashed it again and now it is even worse. To get to 20 on the boost gauge I am now hitting 3000 rpms. This can not be normal?! Because I am in Los Angeles, we do sit around a lot at stop lights and of course on freeways, could my EGR valve be all clogged up, or maybe sticking turbo vanes? I took one of your advice and floored the sucker on an up hill on-ramp to the freeway last night and ran the RPMS way up (I think it hit 4000 rpms/25 boost) and smoked out a BMW convertible...also left it in the smoke too. Any thoughts?
dissconect your batteries, turn headlights on with the batteries dissconected to drain all the power for at least 10 minutes, hook batteries back up, do a key on twice then crank engine and let idle for atleast 5 minutes. if you do not have a coherrency issue with another sensor the strategy will learn itself. then just go flog it and see what happens.
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From: So Cal
Thanks Bowtie...I will give it a try tomorrow and report back! Yeah, when you flog it at night, the headlights of the car behind you really make the flogging exercise look even more dramatic (and with the right car behind you, more satisifying too!)
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Need help from the ROAD!!
I'm on the road with my 11,000lb fifth wheel in tow. Prior to leaving I unhooked my EGR. Actually I really didn't notice that much of a difference and was going to hook it back up but forgot. I read this post yesterday and at the advice of you guys I hooked it back up.
I left Mitchell, SD this morning and again really didn't notice a difference till I hit I-90. The truck will not shift into OD, the RPM's are running up at 2300-2400 at 65mph instead of 1900 like the days before. My mileage went from 10.5-11.3mpg down to 8 mpg. After 300 miles I un-plugged it again and re-fueled. Immediately I could tell the difference. The trans. would shift into OD and engine was running back at 1900rpm. I'm now in the Badlands and it looks like the mileage is back up (haven't re-fueled yet).
What's up? Did I mess something up by un-plugging it? Possibly bad fuel? Have been getting fuel at large truck stops and using Diesel Kleen white bottle double strength. Don't want to carbon up the turbo in place (default) but then again I can't afford 8mpg.
By the way, left WV on Thursday. Cheapest diesel was Ohio at $2.76 gal and most expensive has been South Dakota at $3.22.
Any help or advise would be appreciated.
Thanks,
Bill
I left Mitchell, SD this morning and again really didn't notice a difference till I hit I-90. The truck will not shift into OD, the RPM's are running up at 2300-2400 at 65mph instead of 1900 like the days before. My mileage went from 10.5-11.3mpg down to 8 mpg. After 300 miles I un-plugged it again and re-fueled. Immediately I could tell the difference. The trans. would shift into OD and engine was running back at 1900rpm. I'm now in the Badlands and it looks like the mileage is back up (haven't re-fueled yet).
What's up? Did I mess something up by un-plugging it? Possibly bad fuel? Have been getting fuel at large truck stops and using Diesel Kleen white bottle double strength. Don't want to carbon up the turbo in place (default) but then again I can't afford 8mpg.
By the way, left WV on Thursday. Cheapest diesel was Ohio at $2.76 gal and most expensive has been South Dakota at $3.22.
Any help or advise would be appreciated.
Thanks,
Bill