6.0L Hiccups?

[2006KR]

Need some ideas, folks.

Have a 2006 F350 with the 6.0L PSD. Have less that 6,000 miles on it. When I'm not towing, the things runs like a scalded jackrabbit, but when towing .....

No problems on acceleration, or slowing down, but when trying to maintain my speed, with the trailer, the boost stays between 5 and 10 Lbs. The engine will hiccup (I don't have any better way of describing it, except to say that if it were a gasser, I would honestly believe I had a plug misfiring). Runs good for a few seconds, hiccups, runs fine, hiccups a couple times, runs fine, etc.

Had it in at a dealer in Austin TX when we were there for Thanksgiving. The only problem they found and corrected was a bad O rings on a couple injectors. Fixing that did help power, and milage, but still have the hiccups. Now, I've got it in the dealer where I bought it. It's driving the tech up a wall trying to diagnose the problem. Says there are no codes in the computer, and they are unable to duplicate the problem. He mentioned the next step is to hook up some sort of computer doohicky to it, have me pull the trailer, and when it hiccups, push some sort of button so they will have a reference or something when digging deeper.

Guess if that's what they gotta do, they gotta do it. The problem is that there is a waiting list, and it may be a few weeks before they can do it. In the mean time, has anyone else heard of this type problem, and what could be the possible fix? The tech has been really receptive of any suggestions or comments I've made so far. I'm really pleased with the way they have bent over backwards to find out what's going on.

Thanx in advance folks.

Larry

[Chewzu]

I have this problem also while towing my 5th wheel camper. I live Rapid City and tow into the Black Hills and other areas during the camping season. I notice it when trying to maintain at 65 mph. The only way it disappears is to put my foot into the throttle and it is fine at about 70 mph. The local Ford dealers has not heard of the issue and has no idea. I'm going to another dealer to get it looked at. Do you see your turbo boost gauge jump when this happens, it jumps on my truck when the hiccup so up.

[2006KR]

I haven't noticed the boost guage jumping when it 'hiccups', but it may be so small or quick the guage doesn't react. The dealers have not had any luck at all in tracking down the problem. I'm hooking up again tomorrow to 'camp out' and one of the casino rv lots this weekend, and I'll keep a close eye on it. I'm almost at the point of wondering if the brake controller is sending pulses to the trailer brakes. Guess the only way to know for sure would be to tow but leave the cord disconnected. I'm not very comfortable in trying to drive that way with a 13,000 pound trailer behind me. The dealer is supposed to get with me sometime and hook up some sort of a diagnosic computer that I can activate when the hiccups start, but in the mean time, I think that I am going to ask that they check out the break controller. I'll post if I have any positive results on that.

Rapid City, beautiful area. I was stationed at Ellsworth in the 77 thru 79 time frame. Didn't have a trailer at the time, but made plenty of trips up into the Black Hills. One of our greatest thrills (easily amused) was to take '72 F250 Camper Special with west coast mirrors thru the tunnel on the Needles Highway. Only had about 12" of clearance on each side. Now that I think of it, I just may pull up that way this summer with the grandsons. They have never seen Mt. Rushmore, and the Crazy Hourse monument was just starting to be carved while my wife and I were there.

[stomper2]

this may be really stupid on my part, but is this anything like the compressor surge that they experienced on the 7.3? I know everybody is telling me to replace my compressor wheel because the turbo will surge while pulling a trailer with a 7.3.

[2006KR]

Could you explain 'Compressor Surge' please? This is my first diesel vehicle, and I'm still learning. We just made a small trip this past weekend, and I made it a point to more closely observe when it was happening. The hiccup appears to be more noticeable below 10 pounds boost, and just cruising (just holding my speed). Where it can get really violent is if I'm pulling over 10 pounds boost and for what ever reason, take my foot off the accelerator, then it almost feels like I stomp the brakes 2 or 3 time in rapid sucession, then all seems OK.

Just got a safety recall from Continental Tire and had my truck checked. They have to replace all except the spare. When they get the replacement tires in, I'm going to see if there is some sort of diagnostic that can be ran on the brake controller, because, the only time I get the surge or hesitation as you will, is when the trailer is connected.

I've turned the boost all the way off (for just a short distance) and it didn't seem to have any effect, and the only other option along that lines is to unhook the trailer cord, and I ain't got enough danglies to do that.

[Worm Drowner]

Hiccups?

Isn't that a new line of bras for women from West Virginia?

[stomper2]

Now thats funny right there, I don't care who you are!

[99Smokin73Stroker]

That sounds like something that Larry the Cable Guy would come up with! Nice one drowner!

[Chewzu]

What was the tire recall about 2000KR? I have continental contitrac tr tires on mine. Where did recall come from?

[2006KR]

The recall was from the Continental Tire Company itself, and only effected tires with a DOT date code of 2205 or 2305 on 17" tires. (The date code is the week and year of mfg.) There were 4 other tire series, but they were all 18". Your dealer should have the info, and they should do the inspection free. They are going to have to replace 6 of the 7 tires on my truck. The dealer had to fax the tire info to Continental, and they will ship the replacement tires back to the dealer, who will then contact me to come in and get them replaced.