Knocking noise when accelerating
#1
Knocking noise when accelerating
Hello volvo forums
I just bought a "mint" 945 b230fk with the m90 gearbox.
put when i accelerate the pedal start knocking/clicking/clunk put stops around 3000 rpm. i can feel it in my foot.
no matter what gear im in, put stops if i press the clutch and release the throttle. doesn't do it in idle.
any suggestion on how to fix the problem?
english isnt my main language, so the grammar might not be perfect
I just bought a "mint" 945 b230fk with the m90 gearbox.
put when i accelerate the pedal start knocking/clicking/clunk put stops around 3000 rpm. i can feel it in my foot.
no matter what gear im in, put stops if i press the clutch and release the throttle. doesn't do it in idle.
any suggestion on how to fix the problem?
english isnt my main language, so the grammar might not be perfect
#3
#12
#14
The clutch is a big clue. But the knock sounds too slow for something turning 2000-3000 RPM. It sounds like something hitting the body of the car. Whatever it is I would verify the location by listening through a hose. Check both the engine compartment and the underside of the car.
Last edited by Johnsf; 07-24-2021 at 10:06 PM.
#17
Could be the heater valve(and hoses) knocking against the firewall? Try some zip ties and cinch it up tight to pull the valve away from any solid objects. Might be as simple as that. As mentioned, it sounds slower than the actual engine speed.
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pablochapo (07-25-2021)
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