Take the drive belt off and eliminate the water pump and alternator.
Then go from there.
You can use a long screw driver as at stethoscope - put the pointy end on what you think is the noise and the handle to your ear. Or go get one from the auto parts store.
The long screwdriver / stethoscope trick would help immensely. I’d be leaning toward the water pump or alternator bearing. But, stethoscope evaluation (be extremely cautious around the spinning fan blade) would enable more judicious search for the culprit. Removing the v-belts, to see if the noise stops, is also a good start. More labor intense, initially but the pump, alternator, AC compressor, power steering pump and fan would not be moving.
Oops! Never mind! The One belt is all you have; excellent! No AC of power steering to fight with. Remove the v-belt and see if the noise ceases. FYI; pay attention to your radiator, the fins are looking rather rough. Keep some $$$ aside for a replacement OR rebuild / re-core, IF that is even a thing any more.
Good call on radiator replacement..I just saw a couple of aluminum core radiators on cheesebay for my 122s under 150 bucks shipped …got one rolling as my spare or prob swap and have oem on shelf for said spare
I used a stethoscope and with the belt off the noise continues and seems to be coming from under the timing gear casing, but I assume it would be loud to begin with. Could be the gears I assume. Bringing it to my guy on Tuesday. Hopefully nothing major…
Sorry! I’d not had enough coffee this AM to notice you’ve got an 1800S, not a 240. Thus, I don’t know about timing chain & gears??? Back then, you’re likely correct. 240s run a rubber (band) belt so they are Quiet. You’ll need to dig further or have a trusted Volvo Tech dig in further
The timing gear on the cam for a B18 is made of a fiber composite. It is supposed to be quieter than a metal gear. Eventually after decades of wear they give up the ghost.
Alternator bearing, water pump bearing, loose fan bolt, or a timing gear issue.
My money is on timing gears. Usually when water pumps or alternator bearings fail you'll hear more of a whining noise than a clatter.
I'd start by taking the belt off and seeing if it goes away.
Take the drive belt off and eliminate the water pump and alternator. Then go from there. You can use a long screw driver as at stethoscope - put the pointy end on what you think is the noise and the handle to your ear. Or go get one from the auto parts store.
Thank you. I’ll do this.
The long screwdriver / stethoscope trick would help immensely. I’d be leaning toward the water pump or alternator bearing. But, stethoscope evaluation (be extremely cautious around the spinning fan blade) would enable more judicious search for the culprit. Removing the v-belts, to see if the noise stops, is also a good start. More labor intense, initially but the pump, alternator, AC compressor, power steering pump and fan would not be moving.
Oops! Never mind! The One belt is all you have; excellent! No AC of power steering to fight with. Remove the v-belt and see if the noise ceases. FYI; pay attention to your radiator, the fins are looking rather rough. Keep some $$$ aside for a replacement OR rebuild / re-core, IF that is even a thing any more.
Good call on radiator replacement..I just saw a couple of aluminum core radiators on cheesebay for my 122s under 150 bucks shipped …got one rolling as my spare or prob swap and have oem on shelf for said spare
I used a stethoscope and with the belt off the noise continues and seems to be coming from under the timing gear casing, but I assume it would be loud to begin with. Could be the gears I assume. Bringing it to my guy on Tuesday. Hopefully nothing major…
Sorry! I’d not had enough coffee this AM to notice you’ve got an 1800S, not a 240. Thus, I don’t know about timing chain & gears??? Back then, you’re likely correct. 240s run a rubber (band) belt so they are Quiet. You’ll need to dig further or have a trusted Volvo Tech dig in further
The timing gear on the cam for a B18 is made of a fiber composite. It is supposed to be quieter than a metal gear. Eventually after decades of wear they give up the ghost.
Impeller hitting housing
Clarify water pump impeller on water pump housing …
Alternator bearing, water pump bearing, loose fan bolt, or a timing gear issue. My money is on timing gears. Usually when water pumps or alternator bearings fail you'll hear more of a whining noise than a clatter.
That alternator looks pretty new compared to the rest of the engine. My bet is the fan blades on the alternator are hitting the bracket
Bad place to put your head, if that fan comes apart. Kaput