need a mechanic for this one

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  #1  
Old 04-25-06, 02:27 PM
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need a mechanic for this one

1990 chevy s10--2wd pickup--Im having some vibration/shuddering in driveline on 2.5 l with 176k on it.. 5 spd manual- Clutch grabs fine- just replaced plugs, wires, cap rotor, fuel filter, air filter- occurs at mid-upper rpm with engine under load- most noticeable in 3rd gear and lower end of 4th gear-- feels similar to being in too high of a gear for current speed -- any similar problems or clues as to how to diagnose this?
 
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  #2  
Old 04-25-06, 03:04 PM
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shot in the dark

Just a thought but what condition are your engine and transmission mounts in? Do an inspection of them use a strong light and mirror and a lift if you can.
 
  #3  
Old 04-25-06, 04:08 PM
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Retarded timing has that same feel.
I don't know about anyone else, but a timing light is the only way I can get timing right.
 
  #4  
Old 04-25-06, 04:38 PM
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neighbor has same problem.

Neighbor has same truck, lots of miles. Replaced universal joints but the mechanic did a bad job by pressing them out. Then it really shook. He had to get a rebuilt and balance driveshaft section.

Hope this helps.

Tony
 
  #5  
Old 05-02-06, 04:43 PM
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s10 shakes

Turns out ujoints are wasted-- will be replacing this weekend -- Thanks for the advice!
 
  #6  
Old 05-02-06, 04:46 PM
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good deal

Good deal thanks for the update.
 
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