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-   Hummer H3 (https://www.hummerforums.com/forum/hummer-h3-17/)
-   -   Engine vibration (https://www.hummerforums.com/forum/hummer-h3-17/engine-vibration-22765/)

jewjenk 01-29-2011 07:36 AM

Engine vibration
 
Hello everyone, I'm the new guy, just brought a 2008 H3 5 cylinder........

Question does this engine have a slight vibration at idle? Car has 26k on it.....

Thanks

drtom 01-29-2011 07:57 AM

slight?
 
yeah,all motors do,,slight?, kind of a judgement call. u can feel it,smooth vib,not shakin

airborne227 01-29-2011 09:07 AM

Yes you will have a vibration. It's a in-line 5 cylinder, not as balanced as a 6, or 8 due to their V-shape

jewjenk 01-29-2011 10:34 AM

Thanks for the responses, that was my thought, that it is a 5 cylinder and at idle that is the nature of the beast.........

Car was apparently a lease vehicle, still smells new...................

drtom 01-29-2011 01:05 PM

my used 07 smelled gud too,those used car dealers,really tricky,,got a spray can labeled "new smell". they spray everything. what to do,,,
i think carmax beats them all

joewcob3 02-01-2011 12:44 PM

Mine does it a bit. It is better since I cleaned the throttle body and dropped in a K&N flat air filter element. I posted some pics of how dirty my TB was after only 25000 - 30000 miles. On a full tank of gas, I hardly notice the vibration...liquid dampener.

drtom 02-02-2011 10:51 AM


not as balanced as a 6, or 8 due to their V-shape
1949 buick straight 8 felt like an electric clock motor, its design.
a 90 degree v6 is impossible to balance.

actually the i5 has 2 counter balance shafts to help.
they all need help!

waltham41 01-25-2023 10:58 PM

I realize this is an old thread but it's what I'm experiencing.at idle the vibration is bad enough that the tranny dipstick is a blur shaking back and forth. No misfire felt at exhaust. I have noticed if I turn on the A/C compressor it changes the idle and it smoothes out.

​​​​​​​engine has 241,000 miles but runs great.

Eurynomestolas 01-26-2023 08:32 AM


Originally Posted by waltham41 (Post 398277)
I realize this is an old thread but it's what I'm experiencing.at idle the vibration is bad enough that the tranny dipstick is a blur shaking back and forth. No misfire felt at exhaust. I have noticed if I turn on the A/C compressor it changes the idle and it smoothes out.

engine has 241,000 miles but runs great.

shouldnt bring up old threads. Start with removing and cleaning the TB “Throttle Body” see if that helps. They get gunked up and can cause the engine to run rough.

TAINTER 01-26-2023 01:25 PM


Originally Posted by waltham41 (Post 398277)
I realize this is an old thread but it's what I'm experiencing.at idle the vibration is bad enough that the tranny dipstick is a blur shaking back and forth. No misfire felt at exhaust. I have noticed if I turn on the A/C compressor it changes the idle and it smoothes out.

engine has 241,000 miles but runs great.

HOOO LEEE COWWW, 12 year old thread.
https://cimg8.ibsrv.net/gimg/www.hum...9abb5fe66d.gif
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