Question about GMC Safari

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Vibrations When my van is in park, very little vibrations, once it's in drive and my foot on the brakes, it vibrates to the point that I can't even put a coffee in my cup holder with out spelling all over ( major vibrations!) when accelerating little vibration, but rear end humming noise? Seems like it's held back when accelerating? Sometimes when accelerating rear vibrates like its struggling to go! seems like it's holding back? Please help, thanks

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Sounds like a misfire, if it is 1996 or newer have somewhere like autozone scan the computer for you and see if there is any codes for a misfire, if its older than 1996 then i personally would start it up in park, then pull off spark plug wires one at a time (use pliers and gloves, dont get shocked) and then plug them back in. see which ones change how the engine sounds and how much it shakes or stalls.

if one makes a big difference in how it sounds then that one is firing, if it makes little difference then it might not be firing properly, could need a new plug or wire.

Posted on Oct 15, 2013

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6ya6ya
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Posted on Jan 02, 2017

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angelo63
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SOURCE: 95 ford explorer, grinding noise/vibration at slow speeds.

CHECK YOUR UNIVERSAILS COULD BE WORN OR DRY U NEED TO PULL OUT THE SHAFT TO CHECK PROPLEY CHECK FOR STIFFNESS AND NOTCHEY MOVEMENT

Posted on Dec 16, 2008

  • 33 Answers

SOURCE: 2003 pontiac vibe vibration from the front end

not trans, but could be alignment or bearing.

Posted on Feb 17, 2009

  • 79 Answers

SOURCE: Vibration and noise from front end while driving

Jack up the front end and put stands under it and block rear wheels. Look at axle boots and see if they are cracked. Try turning wheel back and forth sharply and see if you can hear any clicking. Problem could be outer axle joints. If the boots are cracked or you hear a clicking noise you will have to replace the axle. The axle and boot come as a complete unit. Please let me know what you find out.

Posted on Apr 15, 2009

01fordeb
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SOURCE: vibration when idling in drive

check your pulley's. Sounds like one of them are bad and causing movement which where the vibrations coming from. A friend of mine had the same problem, his was the fan pulley. It could be moved inward and outward a little but enough to cause the engine to vibrate. The bearings were going out. check it out and let us know what you come up with.

Posted on Jan 27, 2010

  • 11800 Answers

SOURCE: When my 2005 Infiniti G35x

One of the front wheels isn't balanced correctly and its vibrations cause a resonance in the suspension at that speeds. You might also have a look at the shocks - if you have fitted new tires their hardness and misbalance might bring out the weaknesses in the shocks : these vibrations might be the first sign the shocks have aged and will soon have to be replaced.
You just need to have all the wheels balanced and the bushings of the suspension inspected at a tyre shop - a 30 minute/$50 simple job.

Posted on Jul 20, 2011

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