Shake, rattle and roll!

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Joined
Mar 27, 2023
Posts
41
Reaction score
14
Location
Richmond, VA
First Name
Andrew
Truck Year
1987
Truck Model
R10
Engine Size
305
Hi guys! 1987 R10 with 305. I experience two distinct types of shaking and both are intermittent.

Shake 1: the truck seems to hate 35-45 mph. It sometimes shakes while accelerating and cruising and shakes similarly but more violently when braking down through those speeds. 2 out of 10 times maybe that it doesn’t happen at all.

Shake 2: is an up and down bounce when coming to a complete stop. Again, not every time but usually. Towards the very end of the stop it jerks like when the rotors are warped.

Rear brakes just got complete overhaul and were a mess. Front brakes passed inspection a year ago.

Sometimes I feel like a paint can getting put in the mixer.

Anyone experienced this? Would love to have a more pleasant ride.
 

SquareRoot

Full Access Member
Joined
Mar 18, 2017
Posts
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Location
Arizona
First Name
Mike
Truck Year
85
Truck Model
K20
Engine Size
350
It's either your tires, brakes, drive line, axles or the taco bell you had for lunch. Process of elimination. I've installed brand new warped rotors before. Damn Chinese.
 
Joined
Mar 27, 2023
Posts
41
Reaction score
14
Location
Richmond, VA
First Name
Andrew
Truck Year
1987
Truck Model
R10
Engine Size
305
Lol. What is messing with my mind is why it isn’t consistent. BTW, I put a new imported EGR in like two months ago and the code is back. Never ends.
 
Joined
Mar 27, 2023
Posts
41
Reaction score
14
Location
Richmond, VA
First Name
Andrew
Truck Year
1987
Truck Model
R10
Engine Size
305
Also, the shake does sometimes feel like a knot on my tire but can’t find one. And great tread.
 

SquareRoot

Full Access Member
Joined
Mar 18, 2017
Posts
4,501
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Location
Arizona
First Name
Mike
Truck Year
85
Truck Model
K20
Engine Size
350
Check the motor mounts for the heck of it. You'll need a crowbar to do it correctly.
 

mtbadbob

Supporting Member
Supporting Member
Joined
May 9, 2021
Posts
849
Reaction score
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Location
Montana
First Name
Bob
Truck Year
1987
Truck Model
V20
Engine Size
350
Also, the shake does sometimes feel like a knot on my tire but can’t find one. And great tread.
You night have a tire separating. Sometimes you can't see it happening. How old are the tires??
 

SquareRoot

Full Access Member
Joined
Mar 18, 2017
Posts
4,501
Reaction score
8,902
Location
Arizona
First Name
Mike
Truck Year
85
Truck Model
K20
Engine Size
350
If by chance you have a two piece driveshaft take a good look at the carrier bearing. I've seen these symptoms before with a dilapidated bearing and mount.
 

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