Truck has the shakes - The 1947 - Present Chevrolet & GMC Truck Message Board Network

twalker · 03-19-2011, 12:19 AM

First post but long time reader. I have a 1984 C10, static drop front and rear, recently had new tires and front end alignment. While driving between 55-65 mph the truck shakes at certain spots. I had the shop check the tire balance and all was good. What can be causing this?

2badgn · 03-19-2011, 01:04 AM

Flat spots on tires? Bent rim(s)? Suspension problems? Brake problems?

1BadSS · 03-19-2011, 01:10 AM

Has it seen a ford lately?

Toxic Redline · 03-19-2011, 12:38 PM

did they "Road Force" balance them? sometimes the rubber can have high and low spots that doesnt effect until a certain MPH, also could be a bent driveline

sjreno · 03-19-2011, 09:25 PM

Quote:

Originally Posted by 1BadSS

Has it seen a ford lately?

34psi on a 78mm Turbo??? Thats pretty serious!!

You need spray to get that thing spinning??

I too have a 2.7, but its not in a ford, and my 2 turbos are MUCH SMALLER. Unsuspecting V8's, and some V10's have no clue

1BadSS · 03-20-2011, 01:23 AM

Quote:

Originally Posted by sjreno

34psi on a 78mm Turbo??? Thats pretty serious!!

You need spray to get that thing spinning??

I too have a 2.7, but its not in a ford, and my 2 turbos are MUCH SMALLER. Unsuspecting V8's, and some V10's have no clue

I don't see boost until 3500 when just driving. That isn't full boost either, it's just starting to come in. The car has a 50 shot on it to help the spool. I haven't really had any issues, it'll leave off of the trans brake or via brake boosting from a roll.

sjreno · 03-19-2011, 09:18 PM

call me crazy, hows the U joints in the drive shaft? Had this problem with my 2000 silverado, and it racked my brain but good trying to trouble shoot. Changed out the u joints with new ones, problem solved.

Lost 40 · 03-20-2011, 07:45 AM

Quote:

Originally Posted by sjreno

call me crazy, hows the U joints in the drive shaft? Had this problem with my 2000 silverado, and it racked my brain but good trying to trouble shoot. Changed out the u joints with new ones, problem solved.

X2. I just had my U-joint fixed yesterday. Anything over 50 mph, and I had this horrible shaking. Would even go away for a few seconds at a time. I just bought the truck a couple weeks ago and the truck has a shift kit in it. So I had a hunch the U-joint might be bad. Sure enough, it was shot. Had it fixed, and then still had a small vibration. I noticed my rear tires were cupped, and I had one front tire that had seperated a little. I replaced all the rubber same day, and now she rides like a dream from the drop off the hammer, to chirping the tires in second, through the top end of the speedo. I was a very happy guy. Long story short, get your U-joint looked at.
Posted via Mobile Device

LONGHAIR · 03-20-2011, 08:57 AM

Assuming that the more obvious things have been eliminated... balance, bent wheels, etc., look at the driveshaft itself. I have seen them bent by improper positioning of the lift.

twalker · 03-20-2011, 11:33 PM

Thanks for the replies fellas. I'll check the u-joints and driveshaft since it has a shift kit installed. I got the truck last year and trying to fix the previous owners mess.

03-19-2011, 12:19 AM	#1
twalker Registered User Join Date: Nov 2010 Location: Grant, Alabama Posts: 4	Truck has the shakes First post but long time reader. I have a 1984 C10, static drop front and rear, recently had new tires and front end alignment. While driving between 55-65 mph the truck shakes at certain spots. I had the shop check the tire balance and all was good. What can be causing this?

03-19-2011, 01:04 AM	#2
2badgn Registered User Join Date: Nov 2009 Location: Yonkers, NY Posts: 277	Re: Truck has the shakes Flat spots on tires? Bent rim(s)? Suspension problems? Brake problems?

03-19-2011, 01:10 AM	#3
1BadSS NOT REALLY BANNED! Join Date: Jul 2004 Location: Shawnee, KS Posts: 1,072	Re: Truck has the shakes Has it seen a ford lately? __________________ 1987 Mustang Coupe - 2.7 Stroker, 78mm turbo, Stainless header, 3" Exh, FMIC, 160lb/hr Injectors, MS3, twin walbro 255's, 34psi. Eating V8's daily. 04 Pontiac GTO 04 Ford Mustang GT 68 C20 LWB stripper truck 73 K5 Cheyenne 76 C20 Sierra Crew SRW 88 K20 Suburban I'm not hammering on metal just to hammer, i'm creating a piece of art.

03-19-2011, 12:38 PM	#4
Toxic Redline Registered User Join Date: May 2010 Location: Ogden, Utah Posts: 219	Re: Truck has the shakes did they "Road Force" balance them? sometimes the rubber can have high and low spots that doesnt effect until a certain MPH, also could be a bent driveline __________________ 84 K20 Long Box W.I.P 78 Burb - parts now [Rolled] 68 c20 dump bed WHEN IN DOUBT--- FLOOR IT

03-19-2011, 09:18 PM	#7
sjreno Registered User Join Date: Aug 2009 Location: central jersey Posts: 55	Re: Truck has the shakes call me crazy, hows the U joints in the drive shaft? Had this problem with my 2000 silverado, and it racked my brain but good trying to trouble shoot. Changed out the u joints with new ones, problem solved.

03-20-2011, 11:33 PM	#10
twalker Registered User Join Date: Nov 2010 Location: Grant, Alabama Posts: 4	Re: Truck has the shakes Thanks for the replies fellas. I'll check the u-joints and driveshaft since it has a shift kit installed. I got the truck last year and trying to fix the previous owners mess.



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.