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Re: Vibration when accelerating from stop [message #324669 is a reply to message #324298]

Sat, 07 October 2017 09:47

JohnL455

Messages: 4447
Registered: October 2006
Location: Woodstock, IL

Karma:

Senior Member

If you suspect a light part throttle transitional engine miss, have someone do very light "brake torque" moves from idle to light part throttle in D in the suspect range. You listen and feel with your hand at tailpipe for miss. Simple quick test to isolate if engine miss or drive train harmonic vibration. Could be gummed pullover slots in Qjet or any number of things like plug gap wrong. If no miss, move your diagnostic efforts to rotating drive train assembly parts.

John Lebetski
Woodstock, IL
77 Eleganza II

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[Message index]

		Vibration when accelerating from stop By: RF_Burns on Sun, 24 September 2017 08:56
		Re: Vibration when accelerating from stop By: JohnL455 on Sun, 24 September 2017 09:15
		Re: Vibration when accelerating from stop By: JohnL455 on Sun, 24 September 2017 09:17
		Re: [GMCnet] Vibration when accelerating from stop By: Richard Denney on Sun, 24 September 2017 09:52
		Re: [GMCnet] Vibration when accelerating from stop By: Luke Walling on Sun, 24 September 2017 10:23
		Re: [GMCnet] Vibration when accelerating from stop By: hal kading on Sun, 24 September 2017 16:46
		Re: [GMCnet] Vibration when accelerating from stop By: Hal StClair on Mon, 25 September 2017 17:45
		Re: Vibration when accelerating from stop By: RF_Burns on Sat, 07 October 2017 07:17
		Re: Vibration when accelerating from stop By: JohnL455 on Sat, 07 October 2017 09:47
		Re: Vibration when accelerating from stop By: Scott Nutter on Sat, 07 October 2017 10:29
		Re: [GMCnet] Vibration when accelerating from stop By: James Hupy on Sat, 07 October 2017 10:42
		Re: Vibration when accelerating from stop By: RF_Burns on Mon, 09 October 2017 20:44
		Re: Vibration when accelerating from stop By: JohnL455 on Mon, 09 October 2017 21:47
		Re: Vibration when accelerating from stop By: Scott Nutter on Mon, 09 October 2017 21:48
		Re: [GMCnet] Vibration when accelerating from stop By: johnd01 on Tue, 10 October 2017 01:01

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