the1adman wrote:
Yeah I don't like 6000 rpm's I hit that and know where I was at cause I would surprisingly shift out of 2nd and be there In 1st. How much does your 5th wheel weight GOrste? It also has a lot more frontal area than my TT. Thanks for the advice DHDB. Is the PCM fuse labelled under the hood or are you pulling the main fuse? Thanks again for everyone's advice.
I hear ya! Mine does the same thing. It is because of the big gap in gearing between 2nd and 1st. I don't often end up in first gear but when I do that is what happens - I will have it to the floor and loosing speed until about 40 MPH and then it shifts down into first and the RPMs jump to 6000. 2nd gear is too tall, but it can't downshift into first until the speed drops enough for the RPMs to be 6000 (redline). 6000 is too much and you can't maintain speed in 2nd, so I lock it in first and back off on the throttle to bring the RPMs down to under 5000 and just keep it there for the duration.
The new 66RFE 6-speed should eliminate that by having an extra gear and closer together so that you don't have the two extreme choices for gear selections.
My fifth wheel weighs in between 8000 and 8500 depending on how long and the nature of our trips (gear packed). I also have a 30-gallon refueling tank/toolbox combination full of fuel and tools. My weighed GCW is between 16,000 and 17,000. Driving on the flats, frontal surface area is the main opposition you have to overcome, pulling grades it is the weight.
