no-blue-screen wrote:
I pulled the air filter and it looks pretty dirty after 6700 miles. Kind of surprised at all the debris and dirt in there. I will probably drop a new one in and I will look into bleeding the fuel system. I hope I don't have an air leak somewhere because that is going to be a pain to track down.
I have read all about the shudder, but this doesn't feel like the typical tranny shudder. It doesn't only do it between 55-65, but seems to happen no matter what speed I am going. It doesn't happen all the time, but it will do it almost every time when I push hard on the go pedal and then let off. it will buck and bob very similar to a gasser when it is running out of gas. No CEL or anything like that...and it goes away as soon as I give it more go pedal. It will usually disappear about 60 seconds after it starts....very strange. I hope I didn't get a bad tank of fuel that clogged my fuel filter.
Mine gave me the very definet pulsing sensation less then one mile from the dealer the day I bought it
My first thought was the salesman just filled it up at BP and got a tank of bad fuel as it indeed felt like it was starving for fuel
If you look for it at a steady rate of say 65 mph on a flat road you will get the feeling your being passed by a semi and it's wind is buffiting you around but no semi in sight. (maybe just what your discribing) Not as suttle as what you discribe but longer lasting. Months later I used PS in a tank of fuel labled ULSD and no shudder and it ran noticably better
Same for the next tank again with PS. But as soon as I felt good about it with the third tank it was back to normal and maybe worse
I should mention that the fuel I use does not bubble or foam at all. In Central Ohio the only BP diesel is rotgut #2 so I avoid BP. I regualarlly use Meijer Premium Diesel. I don't know where it's from but it has always preformed well in my diesels present CRD and past VW's
So yes I feel it's partially fuel related but I don't think it's clogging the flow control valve because the effects with these two tanks was instanious
I'm retired now and have the time to drive 50 miles round trip to try a tank of B20. My CRD is at 4500 miles. Read the first post only of this thread and you'll see a VM employee has the same problem with his CRD. So from that I think it's a DC problem as opposed to a VM problem but what's new.
http://www.lostjeeps.com/forum/phpBB3/vie ... sc&start=0
One person has put a tiny clear "pre filter" before his main filter to watch for air bubbles. Another found the hose clamp going into his pump loose. My hose clamp is not loose and I was able to get a screw driver on it as it points upward in a small area just above the flow control valve. Some have found the banjo fittings loose on the filter.
But it could very well be a problem with fluid flow to the TC but I see no pulsing of rpm's on the tac
Or could also be the ECM switching the EGR flow control valve on and off at a transition point and getting confused and if that's the case a GOOD patch/flash could cure it.