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#1
05-19-2024, 09:36 PM
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Buzzing from instrument cluster
Well, I am enjoying my winter projects results - car is running like a scaled ape and the new exhaust sounds incredible. I’ll put up a comparison on another thread to hear difference.
My question is this- I’ve all of the sudden gotten a buzzing coming from the instrument cluster. It loosely follows rpm and is quietest at idle, but still discernible. I’ve recently rewired msd box and the tach adapter, so not sure if something there. How would you trouble shoot this? thanks for any thoughts |
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#2
05-19-2024, 10:14 PM
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Pop the speedo cable out of the speedo, see if the noise goes away or at least changes.
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#3
05-19-2024, 11:16 PM
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Mufflers are too quiet.
__________________
My Pontiac is a '57 GMC with its original 347" Pontiac V8 and dual-range Hydra-Matic. |
| The Following User Says Thank You to Bill Hanlon For This Useful Post: | ||
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#4
05-20-2024, 06:03 AM
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Sometimes the voltage regulator will buzz (just before it dies).
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| The Following User Says Thank You to Kenth For This Useful Post: | ||
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#5
05-20-2024, 08:34 AM
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Heat cycles over the decades have broke down the material holding the windings in place in the inductor in the old style regulator as stated in the above post.
__________________
Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
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#6
05-20-2024, 09:59 AM
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You said you recently installed a MSD and tach adapter. Disconnect tach wire.
Process of elimination. Good luck. Let us know. |
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#7
05-20-2024, 04:35 PM
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Ok thanks guys will report back
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#8
05-22-2024, 12:20 AM
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What year and model?
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1977 Trans Am 400/4speed (swap) Brian |
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