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#1 |
Registered User
Join Date: May 2017
Location: Fort Knox Kentucky
Posts: 2
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Clicking noise behind dash when accelerating
Gents,
First post! Unfortunately I have to start it off with an issue. Does anyone have any prior experience with this specific issue? On my 1971 C10 350/350 combo When accelerating from a stop a loud clicking noise from what seems behind the dash area. Also when it clicks the truck will hesitate.??? I've checked out the relays, flywheel, general inspection and cannot find anything to be the cause. It doesn't do it every time; very intermittent. Thanks for the help guys. |
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#2 |
Registered User
![]() Join Date: May 2002
Location: Lakewood, CO
Posts: 40
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Re: Clicking noise behind dash when accelerating
Have you checked your speedometer cable? It can be noisy when it's spinning without lube. That won't have anything to do with the truck hesitating though.
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'72 C10 Short Fleet "Praise the Lowered" |
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#3 |
Registered User
Join Date: Dec 2002
Location: St. Louis, MO
Posts: 118
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Re: Clicking noise behind dash when accelerating
X2 on the speedo cable needing lube.
Check the near wiring to make sure the speedo cable jacket hasn't worn through any creating a short as it wobbled.
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1971 C10 SWB 350/350 A/C PS PDB |
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#4 |
Senior Member
![]() Join Date: Jun 2005
Location: Winona Lake, IN
Posts: 6,284
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Re: Clicking noise behind dash when accelerating
Check your left motor mount, it could be allowing the motor to lift and the fan blade to hit the shroud. The hesitation would then be the carb linkage binding.
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70 C/10 SWB 402/TH400/3.73 "The Needy Beast" 200,000 Mile Club Disc Brake Club Owner installed options: Front Sway Bar Power Steering Power Brakes Cigar Lighter Courtesy Lights Deluxe Side Markers Wiper Delay Power windows Power Locks Sniper EFI 2015 Silverado 1500 LS 4.3/6L80/3.23 lowered 2" front & rear |
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#5 |
Registered User
Join Date: Feb 2003
Location: Santa Ana, CA
Posts: 2,191
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Re: Clicking noise behind dash when accelerating
Clicking could be due to a burnt plug wire. The arc from the burnt wire to whatever it is grounding on will make a clicking sound. This would also account for the hesitation. When its clicking, its arcing, and you essentially have a dead cylinder.
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#6 |
Registered User
Join Date: Jul 2016
Location: Olathe, KS
Posts: 267
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Re: Clicking noise behind dash when accelerating
Check the wires on your ignition switch that could be shorting out against the firewall or the dash. That will make it hesitate because it shorts the ignition. The clicking you are hearing could be the sparking when it's happening.
Also check your fuse block for shorts.
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1970 GMC K2500 Dis-use is harder on a car than mis-use. |
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#7 |
Senior Member
![]() Join Date: Jun 2005
Location: Winona Lake, IN
Posts: 6,284
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Re: Clicking noise behind dash when accelerating
Please post your findings and/or solution here so other members can benefit from the info.
__________________
70 C/10 SWB 402/TH400/3.73 "The Needy Beast" 200,000 Mile Club Disc Brake Club Owner installed options: Front Sway Bar Power Steering Power Brakes Cigar Lighter Courtesy Lights Deluxe Side Markers Wiper Delay Power windows Power Locks Sniper EFI 2015 Silverado 1500 LS 4.3/6L80/3.23 lowered 2" front & rear |
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#8 |
Registered User
Join Date: Jul 2011
Location: Mt Brydges Ontario
Posts: 181
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Re: Clicking noise behind dash when accelerating
Drivers side exhaust manifold leak?
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#9 |
Registered User
Join Date: Dec 2009
Location: El Dorado Ca
Posts: 3,374
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Re: Clicking noise behind dash when accelerating
sub'd
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#10 |
How did I get this OLD!
![]() Join Date: Dec 2014
Location: Lamont County, AB, CANADA
Posts: 1,047
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Re: Clicking noise behind dash when accelerating
Welcome to the forum!!
This is where you can find the answers to your issues.
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1967 Oshawa built LWB Fleetside. 327,3 OTT, 515 Vermilion, CST, PS, PB, Shoulder Harness, Tach,Vac, Speed Warning, Choke Delete, Manual Throttle, Fawn interior. Dealer installed A/C 04/2015, N34 Rosewood Wheel 06/2023 Members who I have met personally. Metaldoc, chevnkevin, 62 Longbed, 72LHorn, 72MARIO, YBNORML, TBONE1964, Classic Bowties, Chevemall, Dagnabbitt. |
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#11 |
Registered User
Join Date: Aug 2006
Location: Redmond, WA
Posts: 6,332
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Re: Clicking noise behind dash when accelerating
When someone joins and their single, only-ever post is to ask a somewhat obscure troubleshooting question I doubt they ever come back to follow it up. We'll see however, maybe this one is an exception!
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1970 GMC Sierra Grande Custom Camper - Built, not Bought 1969 Pontiac 2+2 427/390 4-speed Coupe 1969 Pontiac 2+2 427/390 4-speed Convertible |
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#12 |
Registered User
Join Date: Jun 2015
Location: Bellevue, Id
Posts: 173
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Re: Clicking noise behind dash when accelerating
I had a similar issue and it turned out to be speedo cable. I took the dash out and subsequently the cable and lubed out. Then took it out of the cable sheath and lubed with dry graphite. It fixed the issue. I had an erratic speedo as well when this was happening. If that's not it and the engine runs well then I'd be checking for an exhaust leak.
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http://67-72chevytrucks.com/vboard/s...25#post7532025 71 Cheyenne K10. 283/Th350/NP205. 3.07s non posi. 31x10.5 Bighorns.L31 350 Vortec swap in progress. 79 Suburban K20. 350/350. 6" lift. 35x12.5 Toyos. 93 Burb K1500. 350/4l60e Parting out. 2001 Tahoe LT, 5.3, autoride, 265/75s, leather, loaded, family hauler, 243k miles! |
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