Storng Vibration at 60mph/100kliks?

[Wheatking]

I have had tires balanced and alignment done, the truck vibrates so bad that your voice reverberates with the vibration, its brutal. need some advice. The steering column doesn';t vibrate, just when you hit the gas pedal, when you release its clean...

also, found that my heater core was clooged with sludge, from the toyota recommended coolant, be carefule what you put in your vehicle, all that glitters is not gold!

 

[brian2sun]

You probably have a bad u-joint - try greasing the driveshaft first. As far as the heater core goes, I recently just dealt with a similar issue and fixed it easily and for free, maybe it'll help your problem too:
http://www.toyota-4runner.org/3rd-gen-t4rs/63149-trickling-water-sound-heater-core.html

Are you sure the sludge was from your coolant and not from rust?

 

[Wheatking]

well I didn;t really analyze the stuff, but I did smear it in my fingers and found no real abrasive or sand feel, just greezy sludge, it was a blob of it. What did you do to yours to make it work for free, its awesome now, I burn my fingers with the heat on full blast...

 

[Wheatking]

read thru the hyperlink you sen, but do you have any pics of where the heater core inlet and outlets are?

 

[brian2sun]

read thru the hyperlink you sen, but do you have any pics of where the heater core inlet and outlets are?

Here's a pic, but it's dark and on my cell camera. The hoses are where the light is shining on connected to the firewall. The inlet is toward the driver, the outlet right next to it, towards the passenger. I blew mine out backwards, then forwards, backwards again, and so on about 5 times.

 

[durrell]

I'm experiencing the same thing, but mine feels like it's in the front end. I'm going to have to crawl under there and see if anything looks strange.

 

[JohnsD90]

I have had tires balanced and alignment done, the truck vibrates so bad that your voice reverberates with the vibration, its brutal. need some advice. The steering column doesn';t vibrate, just when you hit the gas pedal, when you release its clean...

also, found that my heater core was clooged with sludge, from the toyota recommended coolant, be carefule what you put in your vehicle, all that glitters is not gold!

Maybe u joints or CV's, then its on to the front diff bearing worn out, or wheel bearings.