Running on 5 cylinders

[TowPro]

Ok, here is what happened.

Before I start, its got 16K miles on it, this is my 06. Just did all the filters and all the oils at 15k miles.

Last weekend I drove all the way to Fla (1000 miles) running from 65-75mph, towing 11,000 lbs. Ran great, even running at 2500 at times the overhead showed 12. 5-13 MPG (I know its not correct, but its a number).

Coming home, ran all the way out of fla, and stopped at Flying J around Savannah Ga, filled her up. Left it running at the pumps. Drove another 3 or 4 hours at 70-75mph, pulled into a rest area and shut it off. After Lunch (around 1/2 hour) I started the truck back up and it was running on 5 cylinders! Reving it up would seem to clean it out so I hit the road (what was my other choice, call a local dealer, then call work and ask for another 3 weeks off?). Once on the road again, I did notice that when I came to a stop and let it idle, it was smooth as can be.

Drove the rest of the day yesterday, Mileage is down to 11 on the overhead, filled up again at Flying J just before South of the Border, again left it running, drove another couple minutes to the campground at South of the Border, parked the camper and shut it off. Still idles perfect when hot.

This morning I started the truck and again, its running on 5 cylinders but cleans up with RPM, so I leave. Once the engine is heated up it idles great.
Still, mileage is down to around 11. Filled up again on the side of Richmond (some unknown name brand), it idled fine at that stop, but I did not shut it off. Drove the rest of the way home, noticed the Overhead is now back up to 12. 5-13 (doing same speed as the day before), parked the camper, unhooked, and turned off the truck. Around 1/2 hour later I start the truck to put it away, idles great.

WTF? I will check for codes tomorrow, but I did not see a CEL the whole trip.
The whole way home vision of a stuck injector run through my mind, but there was no extra smoke (it would leave a mark on my camper like my 02 used to do)

 

[lmills]

hearing this more and mnore and it is bothering me. It sounds very familiar, when you give it throttle, it clears up?

 

[ktb]

my truck did that its a 2003 was a loose nut on the injector hope yours is that simple

 

[RankRam]

Have you checked your oil level?

 

[Cattletrkr]

Somebody slapped a Ford stick on your tailgate.

 

[TowPro]

Again this morning it ran fine. In fact it always runs better after a long hard tow

The oil level is just at the full mark, same as it was at 15K when I changed it.

It was already cooled off when I parked it in the garage last night, I went back in around 2 hours later and could smell antifreeze. I did not see anything leaking underneeth, could be just a loose clamp (typical, had same problem with last 2 CTD's). The radiator was still full and overflow tank was still within marks.

this weekend I will craw underneath and look around, plus take a fuel sample from the filter.

Problem is unless there is a code, the dealers will say "could not duplicate problem".

 

[BGlidewell]

have you changed the fuel filter? Maybe some SP or seafoam through a tank of fuel?... (injector)

 

[sayrew]

Don,t use seafoam. I saw on here somewhere that the seafoam was bad for injector seals and lift pump. Bummer really it is the only additive I have used that makes an instant difference in the way the truck runs. I now use Power service and marvel mystery oil mix. Works pretty good.



Bill

 

[TowPro]

I have to get some new PS silver bottle (cleaner). All I have is White and the quart of 911 I keep around in case I need it for my Wifes car or my truck.

I wish I had not forgot to check the codes this morning.
I can't figure out what would cause this.

If it had been a piece of dirt hung in the seat of the injector, it would have done it at idle once heated up. Plus I don' think it would have cleared up with RPM.

If it was compression, the problem would have still been there this morning.

If it was an injector electronic coil, I would expect a code.

 

[TowPro]

More Information
Tonight I started it, still idles fine, but CEL is on. P0111
Anybody fill me in on that that one means?
Thanks

 

[RankRam]

More Information

Tonight I started it, still idles fine, but CEL is on. P0111

Anybody fill me in on that that one means?

Thanks

Here's a thread about your P0111 code:



http://www.tdr1.com/forums/showthread.php?t=153688&highlight=P0111

 

[CStraface]

How do you know it was running on 5? From the sound? Is the power way down? I ask because I had the P0111 code last summer. My truck sure felt like it was running on 5 cylinders. Power was way down. But anyway, changed the sensor out, cleared CEL, and everything was back to normal.

 

[betterthanstock]

Maybe it has a bad temp sensor somewhere (air filter, manifold, battery tray), and it went into the cold idle cylinder deactivation mode (it runs on 2 or 3 cylinders to warm up faster).

 

[TowPro]

When it does it you can feel the engine has a miss, its not the 3cyl cold idle. Kind of like a spark plug going bad (that is what I told the female service advisor, she looked at me and said "diesels don't have spark plugs". I said I know, I was just kidding you, with a smile).

Anyway the diesel tech said p0111 was the air intake temp sensor code. I already had the reflash done for this so he said maybe the sensor is going bad.

I will make a appointment to have them replace it and do the PCM flash to raise the trailer brake light fuse value (I will need to find that TSB number).
might get the higher idle TSB done also. I been thinking about it, and watching the tach when I drive. My style driving I notice the RPM drops pretty low when I let the clutch out. I am not one to "rev" a motor to let the clutch out. It must be working, I have never had to replace a clutch in anything I have ever owned.

He did'nt know what to say about the miss. if he can't see it doing it and there is no codes he can't fix it, but he said he could look for problems. he said at 26,000 PSI, its hard to picture something sticking in an injector nozle.