U-joint problem.
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U-joint problem. - 11/20/2007 6:00:38 PM
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S10Blazer
Posts: 184
Joined: 9/4/2006
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Ok, so I recently got my truck back from the mechanic before he closed. He replaced both U-joints that were on the rear shaft. Now, I have noticed that when I accelerate, the whole truck vibrates, and it gets worse if I accelerate more. What could this be? I am going to take it back to him tomorrow, but I just wanted to know what could be the problem.
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''96 S-10 Blazer LS 4.3L 4x4, Compustar 2WSS-AS Alarm, 1200 Watt Profile California Amp, Kole Audio 2.5Farad Capacitor, 12" Dual Subs, JVC KD-AVX1 CD/DVD Player, Pioneer speakers, Nu Image Gauges, Optima Yellow Top, K&N FIPK, HID White Interior LEDs
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RE: U-joint problem. - 11/22/2007 3:53:38 AM
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S10Blazer
Posts: 184
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Ok, my mechanic said that I should drive the truck at 50 mph or more, so that the new u-joints could adjust.
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''96 S-10 Blazer LS 4.3L 4x4, Compustar 2WSS-AS Alarm, 1200 Watt Profile California Amp, Kole Audio 2.5Farad Capacitor, 12" Dual Subs, JVC KD-AVX1 CD/DVD Player, Pioneer speakers, Nu Image Gauges, Optima Yellow Top, K&N FIPK, HID White Interior LEDs
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RE: U-joint problem. - 11/22/2007 8:04:21 AM
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rriddle3
Posts: 1545
Joined: 12/22/2006
From: Fort Worth,Texas
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Hmmm, that's a new one to me. Never heard that before.
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RE: U-joint problem. - 11/22/2007 3:06:20 PM
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S10Blazer
Posts: 184
Joined: 9/4/2006
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Well, actually this morning, I decided to run it at 50 mph and higher, to see if it would go away. It's really bad. The truck vibrates a lot. It does it even more when I hit 60 mph. I am going to take it back to him first thing in the morning on Monday. Also, when I am cruising(not giving it gas) at a low speed, it makes a loud, ugly sound as if some metal parts are moving. And as I said, the truck vibrates very much. my radar dectector and gps almost fell off the windshield from rattling so much. What do you guys think?
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''96 S-10 Blazer LS 4.3L 4x4, Compustar 2WSS-AS Alarm, 1200 Watt Profile California Amp, Kole Audio 2.5Farad Capacitor, 12" Dual Subs, JVC KD-AVX1 CD/DVD Player, Pioneer speakers, Nu Image Gauges, Optima Yellow Top, K&N FIPK, HID White Interior LEDs
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RE: U-joint problem. - 11/22/2007 5:19:07 PM
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TripleBlackBlazer
Site Moderator
Posts: 2004
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Sounds like he didn't index it properly. My guess is he didn't mark the driveshaft when he took it out so when he replaced it, the weights were in the opposite side (where they were stock) which is giving you that nasty vibration.
EDIT: I would have a hard time bringing it back there after he fixes his problem. The advice to drive it over 50 so that it will adjust...shady.
< Message edited by TripleBlackBlazer -- 11/22/2007 5:21:12 PM >
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RE: U-joint problem. - 11/22/2007 7:01:09 PM
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S10Blazer
Posts: 184
Joined: 9/4/2006
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Yea, I've known him for quite a few years, and this is the first problem I have with him. But I will definitely go to him with an attitude. It didn't cost a penny either. He had replaced the heater core for me along with this joint, and it was not cheap at all. Do you think anything could get seriously damaged by running the truck in this condition? Thanks again for all your help.
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''96 S-10 Blazer LS 4.3L 4x4, Compustar 2WSS-AS Alarm, 1200 Watt Profile California Amp, Kole Audio 2.5Farad Capacitor, 12" Dual Subs, JVC KD-AVX1 CD/DVD Player, Pioneer speakers, Nu Image Gauges, Optima Yellow Top, K&N FIPK, HID White Interior LEDs
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RE: U-joint problem. - 11/22/2007 9:45:16 PM
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Chevy Lover
General Tech Moderator
Posts: 3411
Joined: 6/11/2006
From: Vancouver. B.C. Canada
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quote:
ORIGINAL: S10Blazer
... this is the first problem I have with him. But I will definitely go to him with an attitude...
I wouldn't go with an attitude, if someone comes to me with with an attitude I just return the same to them.
I'd go back to him and let him know that there's a major vibration problem and that a friend mentioned that the drivehaft may have been installed 180deg out ( not indexed), and that could throw the driveline out of balance.
Then see if he's willing to adjust the shaft for you. ( it only take a few minutes on a hoist).
Everyone can have a bad day and make a mistake. If he doesn't want to fix it, then go for the attitude!
I wouldn't run the truck with the vibration any longer than you have to and keep the speed down, then there should not be any damage to the truck.
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Give a man a fish and he will eat for a day, teach a man to fish, and he will sit on a boat drinking beer for a life time
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RE: U-joint problem. - 11/22/2007 9:57:40 PM
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S10Blazer
Posts: 184
Joined: 9/4/2006
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quote:
ORIGINAL: Chevy Lover
quote:
ORIGINAL: S10Blazer
... this is the first problem I have with him. But I will definitely go to him with an attitude...
I wouldn't go with an attitude, if someone comes to me with with an attitude I just return the same to them.
I'd go back to him and let him know that there's a major vibration problem and that a friend mentioned that the drivehaft may have been installed 180deg out ( not indexed), and that could throw the driveline out of balance.
Then see if he's willing to adjust the shaft for you. ( it only take a few minutes on a hoist).
Everyone can have a bad day and make a mistake. If he doesn't want to fix it, then go for the attitude!
I wouldn't run the truck with the vibration any longer than you have to and keep the speed down, then there should not be any damage to the truck.
Well, that is true. I mean, the only reason why I'm kind of mad is because I paid a lot for all of this, and I expected the best. But it is true, people can make mistakes. What exactly is the process to fix it? Does he have to take off the drive shaft, and adjust or rotate the joint? By "indexed", do you mean that it is not centered?
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''96 S-10 Blazer LS 4.3L 4x4, Compustar 2WSS-AS Alarm, 1200 Watt Profile California Amp, Kole Audio 2.5Farad Capacitor, 12" Dual Subs, JVC KD-AVX1 CD/DVD Player, Pioneer speakers, Nu Image Gauges, Optima Yellow Top, K&N FIPK, HID White Interior LEDs
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RE: U-joint problem. - 11/23/2007 9:59:34 PM
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Chevy Lover
General Tech Moderator
Posts: 3411
Joined: 6/11/2006
From: Vancouver. B.C. Canada
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He doesn't need to take the driveshaft off. Just remove the rear u-joint clamps, push the driveshaft forward enough to clear the rear diff flange, rotate the diff 180 degrees, slide the driveshaft back into position and bolt it back up.
Indexed refers to the position of the driveshaft to the rear axle flange. most people will mark the flange and the driveshaft with paint before removing the driveshaft to make sure they put it back together the same way it came apart....for balance reasons.
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Give a man a fish and he will eat for a day, teach a man to fish, and he will sit on a boat drinking beer for a life time
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RE: U-joint problem. - 11/26/2007 6:33:19 AM
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cain45
Posts: 56
Joined: 6/13/2007
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If I may ask, what did it cost to have the heater core replaced?
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