1982 Porsche 911SC soft ticking sound when moving, not idling
#1
Instructor
Thread Starter
1982 Porsche 911SC soft ticking sound when moving, not idling
I just noticed a ticking, of more of a flip flip flip, soft sounds that I can hear only when moving. it accelerates as the car goes faster and vice versa. it only happens when moving.
When idle, the engine sounds as it should for a 40+ yrs old. No strange noise. The previous owner had replaced gaskets, and valve covers I think, and it has always serviced the car with a lot of care.
At first, I thought it must be something to do with a rear tire tire because the frequency feels something that goes at the same pace as one cycle of the tire.
Can it be something to do with brakes? I even thought it could be something stuck on the tire.
Anyway, I'll try to make a video. I drove 200 miles and the car is great. And honestly, I don't even notice it anymore because of the engine's loud sound itself. but I'm curious to know my car better.
When idle, the engine sounds as it should for a 40+ yrs old. No strange noise. The previous owner had replaced gaskets, and valve covers I think, and it has always serviced the car with a lot of care.
At first, I thought it must be something to do with a rear tire tire because the frequency feels something that goes at the same pace as one cycle of the tire.
Can it be something to do with brakes? I even thought it could be something stuck on the tire.
Anyway, I'll try to make a video. I drove 200 miles and the car is great. And honestly, I don't even notice it anymore because of the engine's loud sound itself. but I'm curious to know my car better.
#5
Three Wheelin'
i had an 82 SC for 18 years. i noticed what you're talking about a few times while driving slowly through the neighborhood. i think it's the odometer.
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robtgreenberg (02-11-2024)
#6
Instructor
Thread Starter
ooh interesting, I will keep an eye (or better ear) on that... yeah it feels very soft, and it blends with all the other louder sound when above 3,00rpm
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#8
Drifting
Originally Posted by jfischet
i had an 82 SC for 18 years. i noticed what you're talking about a few times while driving slowly through the neighborhood. i think it's the odometer.
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jfischet (02-08-2024)
#9
RL Community Team
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3,000 rpm is a fairly high threshold for drowning out of the sound. A few other preliminary things to "check" would be:
- Can you hear this sound in multiple gears (i.e., first and second) and also reverse? Also, if you put the car in neutral and coast, do you still hear the sound?
- Try to get a feel for which side the noise seems to be coming from, then swap your wheels left to right (assuming the tire treads are not directional) and see if that makes any difference
- grab the top of each wheel and try to push it in and out firmly to get an initial indication of loose wheel bearings
#10
Instructor
Thread Starter
Thanks for all the suggestions.
I'll try to troubleshoot this weekend. for sure it's not the engine in neutral/idle position even when revving, and pushing the throttle i don't hear it.
all the other suggestions around wheels, axles, tachometer or odometer (anything that rotates!) seem plausible
will keep you posted
I'll try to troubleshoot this weekend. for sure it's not the engine in neutral/idle position even when revving, and pushing the throttle i don't hear it.
all the other suggestions around wheels, axles, tachometer or odometer (anything that rotates!) seem plausible
will keep you posted
#11
Instructor
Thread Starter
UPDATE:
after driving today in a quite part of the city, and moving my head in different positions, opening windows etc
I certainly feel the noise is coming from the front/dash, not the rear or outside.
it does feel like a soft clock-y mechanical thing
I believe the Odotometer suggestion maybe a good one... which means I will get used to it and be fine...
after driving today in a quite part of the city, and moving my head in different positions, opening windows etc
I certainly feel the noise is coming from the front/dash, not the rear or outside.
it does feel like a soft clock-y mechanical thing
I believe the Odotometer suggestion maybe a good one... which means I will get used to it and be fine...
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jfischet (02-11-2024)
#13
Odometer
I have the same issue with my 1982 911SC. My mechanic thinks that it is coming from the odometer but recommended turning the radio up a little. That worked!
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jfischet (02-11-2024)
#14
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I just noticed a ticking, of more of a flip flip flip, soft sounds that I can hear only when moving. it accelerates as the car goes faster and vice versa. it only happens when moving.
When idle, the engine sounds as it should for a 40+ yrs old. No strange noise. The previous owner had replaced gaskets, and valve covers I think, and it has always serviced the car with a lot of care.
At first, I thought it must be something to do with a rear tire tire because the frequency feels something that goes at the same pace as one cycle of the tire.
Can it be something to do with brakes? I even thought it could be something stuck on the tire.
Anyway, I'll try to make a video. I drove 200 miles and the car is great. And honestly, I don't even notice it anymore because of the engine's loud sound itself. but I'm curious to know my car better.
When idle, the engine sounds as it should for a 40+ yrs old. No strange noise. The previous owner had replaced gaskets, and valve covers I think, and it has always serviced the car with a lot of care.
At first, I thought it must be something to do with a rear tire tire because the frequency feels something that goes at the same pace as one cycle of the tire.
Can it be something to do with brakes? I even thought it could be something stuck on the tire.
Anyway, I'll try to make a video. I drove 200 miles and the car is great. And honestly, I don't even notice it anymore because of the engine's loud sound itself. but I'm curious to know my car better.