mariner

Hi Guys,I have a situation where the truck once started (starts very easily) and I start to move off, it will often not change from 1st gear though the engine revs up (2002 auto tranny 57RE). Consequently, the truck moves at maybe 30kph. I have found that if I pull over, put the trans in park and shut the engine off and leave it for a minute or so and then restart and put it into drive, the truck will drive away normally, shifting through the gears as if nothing had happened. For the rest of the day the truck acts and performs normally.I have no codes show up and I have around 12 psi at idle and maybe 9psi at speed.Anyone have any ideas as to what is happening. Should I re-adjust the front bands - they were done about 20,000km ago when the tranny was serviced.Otherwise the truck and engine perform normally with no other problems.Any input from you experinced guys would be greatly appreciated.Thanksmariner2002 3500 auto 4x4 QC long box

Inside the pressure fitting where you screw on the gauge line (you have the isspro 30# gauge ?), you will see a small lotted screw with an even smaller hole in it. This is a dampening arrangement on the gauge itself and it might just be completely shut off. I would guess about one turn open would be plenty - maybe slightly less.I would take the gauge off and make sure that this small screw isn't completely shutting off the incoming fuel pressure. Hopefully it will be this and not a bad pump. HTHmariner

Hi Guys,Have read this thread with interest. I have a 2002 Ram 3500 dually since new. I also have a 1986 F250 with the 6.9 litre IH engine since new.F250 - the antifreeze I have used all along is Prestone green - but I also use SCA's as well. I use IH recommended DCA4 and test it to ensure it is up to snuff. The antifreeze hasn't been changed annually and the engine is just fine - even though there has been problems with the 7.3 and 6.9 engines.I n the 2002 I am using STO extended life antifreeze - an orange colour. It does have the HOAT and I assume, will last the five years that they claim. For the overflow bottle I put in some new Prestone which is supposed to be good for all antifreezes.I have a couple of questions that maybe someone here can answer.1) Do any of you use SCA's in your Cummins diesels ? The Ford 6.9 and 7.3 engines had cast blocks with no renewable liners (i.e. cast cylinders in the block) and they were prone to cavitation pitting without using SCA's. Using SCA's seems to be advantageous in this respect.2) Do the new generation antifreezes tolerate SCA's well ? Are there any negative effects from these SCA'sbeing added to the coolant?Big rig trucks and all larger engines up to 30,000 hp marine diesels use real water treatment on their engines (chemical companies make big bucks) - common sense would suggest that the pickup truck engines should be treated in a similar manner.A note of interest - I had to rebuild the engine in my JD450 crawler loader - because of the cylinder liner cavitation and seal degredation. Previous owners obviousl neglected proper maintenance and I paid the price with an out of frame rebuild.Thanks