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73-87chevytrucks.com
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73-87 Chevy _ GMC Trucks
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Engine/Drivetrain
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bad vibration
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Topic: bad vibration (Read 254457 times)
VileZambonie
Global Moderator
Senior Member
Posts: 19255
Re: bad vibration
«
Reply #465 on:
August 30, 2026, 07:06:02 pm »
It's not the torque converter. Pull the plugs, check the cap and rotor.
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74 GMC
,
75 K5
,
84 GMC
,
85 K20
,
86 k20
,
79 K10
philo_beddoe
Senior Member
Posts: 2779
77 C-10
Re: bad vibration
«
Reply #466 on:
August 30, 2026, 08:54:04 pm »
Quote from: VileZambonie on August 30, 2026, 07:06:02 pm
It's not the torque converter. Pull the plugs, check the cap and rotor.
Ok, will do!
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Behold, the day of the LORD cometh, and thy spoil shall be divided in the midst of thee. Zechariah 14:1
philo_beddoe
Senior Member
Posts: 2779
77 C-10
Re: bad vibration
«
Reply #467 on:
August 31, 2026, 04:07:06 pm »
Are these bad? Clean, replace??
Sent from my SM-S942U1 using Tapatalk
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Behold, the day of the LORD cometh, and thy spoil shall be divided in the midst of thee. Zechariah 14:1
VileZambonie
Global Moderator
Senior Member
Posts: 19255
Re: bad vibration
«
Reply #468 on:
August 31, 2026, 05:19:29 pm »
Time for a tune up
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74 GMC
,
75 K5
,
84 GMC
,
85 K20
,
86 k20
,
79 K10
philo_beddoe
Senior Member
Posts: 2779
77 C-10
Re: bad vibration
«
Reply #469 on:
August 31, 2026, 05:48:21 pm »
Quote from: VileZambonie on August 31, 2026, 05:19:29 pm
Time for a tune up
I did the plugs a month ago, R45TS. Should I add in new wires, I have cap and rotor in my cart right now.
still have same wires you put on.
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Behold, the day of the LORD cometh, and thy spoil shall be divided in the midst of thee. Zechariah 14:1
VileZambonie
Global Moderator
Senior Member
Posts: 19255
Re: bad vibration
«
Reply #470 on:
September 02, 2026, 05:06:31 pm »
Did it start running rough after you did the plugs?
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74 GMC
,
75 K5
,
84 GMC
,
85 K20
,
86 k20
,
79 K10
philo_beddoe
Senior Member
Posts: 2779
77 C-10
Re: bad vibration
«
Reply #471 on:
September 02, 2026, 08:05:29 pm »
No, it was smooth. I just got a new dist. cap, rotor and plug wires. Ill check and make sure each plug is sparking.
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Behold, the day of the LORD cometh, and thy spoil shall be divided in the midst of thee. Zechariah 14:1
philo_beddoe
Senior Member
Posts: 2779
77 C-10
bad vibration
«
Reply #472 on:
September 03, 2026, 06:29:24 pm »
No change at all, new dist cap, rotor and plug wires. The only thing I saw back there not connected was this. What is it and where does it go? Connection for optional tachometer?
«
Last Edit: September 03, 2026, 10:05:56 pm by philo_beddoe
»
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Behold, the day of the LORD cometh, and thy spoil shall be divided in the midst of thee. Zechariah 14:1
VileZambonie
Global Moderator
Senior Member
Posts: 19255
Re: bad vibration
«
Reply #473 on:
Today
at 02:58:29 pm »
Pull your plugs, check the gaps, make sure none of them are cracked. That is oil pressure sending unit or switch. Do you have gauges or lights?
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, ___
/ _ _ _\_
⌠ŻŻŻŻŻ' [☼===☼]
`()_);-;()_)--o--)_)
74 GMC
,
75 K5
,
84 GMC
,
85 K20
,
86 k20
,
79 K10
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73-87chevytrucks.com
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73-87 Chevy _ GMC Trucks
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Engine/Drivetrain
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bad vibration