Awful engine noise, Volvo 940
#1
#2
Not my car but one that I've been talking with somebody about, its a 940 with 105k miles. It makes this random screeching/howling when it idle.
Engine Noise
Engine Noise
https://www.rockauto.com/en/catalog/...+bushing,11651
#4
I think most redblocks do it eventually, mine did. It's a loose belt. While it's doing that spray a little water on each belt one at a time. When the noise stops you'll know which one it is. Try tightening it and if it still does it then the rubber bushings in the support brackets are cracked, split or distorted, and that prevents you holding a good adjustment. They're pretty cheap
https://www.rockauto.com/en/catalog/...+bushing,11651
https://www.rockauto.com/en/catalog/...+bushing,11651
If its just a belt would it survive a long highway drive?
#5
Sure it would if it's just a belt but make sure it is the belt and it's not really cracked, etc. Also, make sure the miles are right. What year is this car? Keep in mind '91-'92 740/940 speedometers are really bad, rarely survive. I'd run a Carfax to see the miles record besides evaluating the car's condition. A Red Block with 105k is barely broken in...
#6
Sure it would if it's just a belt but make sure it is the belt and it's not really cracked, etc. Also, make sure the miles are right. What year is this car? Keep in mind '91-'92 740/940 speedometers are really bad, rarely survive. I'd run a Carfax to see the miles record besides evaluating the car's condition. A Red Block with 105k is barely broken in...
#7
Sure it would if it's just a belt but make sure it is the belt and it's not really cracked, etc. Also, make sure the miles are right. What year is this car? Keep in mind '91-'92 740/940 speedometers are really bad, rarely survive. I'd run a Carfax to see the miles record besides evaluating the car's condition. A Red Block with 105k is barely broken in...
#8
its hard to tell in that video, but it does look like the alternator belt is vibrating something fierce, which suggests its too loose.
as Moe said, the rubber alternator mount bushings should be replaced along with the belt, otherwise the alternator sits at a slight angle, and the pulley will eat the new belt. IPD sells poly bushings that will hold up a lot longer. When the belt is off, spin the alternator pulley by hand, make sure its smooth, and has no excessive end play or wobble, otherwise the alt bearings are shot, and its time for a new/rebuilt alternator. if you can rock the whole alternator perpendicular to the direction of the tensioner, then for sure the bushings need replacing.
as Moe said, the rubber alternator mount bushings should be replaced along with the belt, otherwise the alternator sits at a slight angle, and the pulley will eat the new belt. IPD sells poly bushings that will hold up a lot longer. When the belt is off, spin the alternator pulley by hand, make sure its smooth, and has no excessive end play or wobble, otherwise the alt bearings are shot, and its time for a new/rebuilt alternator. if you can rock the whole alternator perpendicular to the direction of the tensioner, then for sure the bushings need replacing.
#9
its hard to tell in that video, but it does look like the alternator belt is vibrating something fierce, which suggests its too loose...
...its time for a new/rebuilt alternator. if you can rock the whole alternator perpendicular to the direction of the tensioner, then for sure the bushings need replacing.
...its time for a new/rebuilt alternator. if you can rock the whole alternator perpendicular to the direction of the tensioner, then for sure the bushings need replacing.
#10
as long as the battery light on the dashboard comes on when you turn the key on, and goes out when you start the engine, the alternator is at least trying to charge the battery if its dim and/or flickering when the engine is running, then its weak and on its way out. a quick simple test is voltage readings when the engine is running, it should be around 13.6-14.2V.
#11
#12
Theres a few other faults if they help indicate the real mileage:
1. Aluminum pipe/hose underneath the car has fallen off, I THINK this is the hose that goes from the airbox to an outlet on the exhaust.
2. Neuteral Safety switch is bad, so the car wont start in park.
3. Outer blinker light lense is broken.
4. The car was mostly driven to and from Oklahoma from Kansas, which leads me to question the mileage myself.
#13
#14
Thats true, in the past I yanked it off my 240s and cleared out the airbox just so they breahted better, and to keep the MAF sensor or what not from melting (I forget the part).
#15
#16
True, I found baby jar lids to be effective airbox caps myself.
At Lev:
I'll ask for the vin tomorrow and PM it to yah, I need to ask if hes still taking the car to a shop.
EDIT: I asked for the VIN and I'm still waiting to hear back on it, they've been very busy for the most part.
Last edited by 92Sedan; 12-19-2018 at 05:17 PM.
#17
For now this might be my last update on the car. I havent heard back on the VIN. I explained that Volvos are known for buggy odometers, and when I asked if the guages in the car worked the seller picked up a bit of an attitude with me.
Basically they won't provide the vin, answer any more questions, nor bother looking into the engine noise. I'll have to either bite the bullet and make a 4 hour drive or move on to another car.
#19
Thank you for the carfax offer though, if I find another Volvo I might take you up on that offer.
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