When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
truck has a auto trans and has recently started having a vibration at take off. When towing a 28 ft toybox the torque doesn't seem to be there. Not only that, you get in a situation where you are stuck in 2 wheel or at a base of a hill and it takes alot of acceleration to get it moving. Does anyone have this problem? is it a torque converter or something? The truck only has 30k on it.
I assume you've checked the fluid level and it's good. I would suggest getting one of those Sonnex valve kits and installing it. It raises the line pressure inside the transmission.
First I don't know what truck you have or what you have done to it - but if you have a longer wheel base rig - the drive shaft carrier bearing will make a vibration like you describe on takeoff. The bearing could be going bad - or if you have lifted the rear of the truck at ALL it can give you a slight vibration on takeoff.
I don't know about the other part of your question - but the sonnax valve and tri-springs do NOT cure problems with a tranny. They are good and help the tranny shift better and quicker (I have them in my truck) - but I don't think that has anything to do with the problems you stated in your post. It sounds as though maybe the T.C. is slipping and not engaging correctly but I am no tranny expert.
Your probably right, but I was picking up on him saying that he has to give a lot of throttle to get going. That's why I thought maybe the torque wasn't getting through the transmission. OTOH, I've fixed two of my own trucks shaking on take off pulling a load by replacing u-joints. But never did they have a power loss.
Its a ext.cab long bed. My concern is even on a hill it won't usually spin until full aceleration is given. I havn't done any hop-ups yet, thinking my first ps would perform different than a 460 would. The vibration is consistant of trying to start out in a higher gear with a manual tranny. I did put a leveling kit w/ 3" inthe back with 35's tucked under.
Spin? As in spin the tires? Spool up the turbo? I thought you were trying to pull a trailer.
And now that you mention a leveling kit, yes, I fully agree with Catman. Check out your driveline. The geometry has been changed by the leveling kit.