humming noise @ 140km/h+ - Toyota Nation Forum : Toyota Car and Truck Forums

elvasoshexai · 10-28-2005, 03:57 PM

er... yea... this has been going on for a while... as soon as i start to go over 140km/h my car (93 5sfe) starts to get an incredibly loud humming noise from the engine bay... my engine isn't about to crap out on me is it? it's got 266k km on it... any ideas on what might be wrong?

Waghle · 10-28-2005, 05:21 PM

whats that? like 85 mph?

leasaunce · 10-28-2005, 05:52 PM

check if any of the engine mounts are loose, tighten every screws in the engine.

elvasoshexai · 10-28-2005, 05:58 PM

i'll check the mounts this weekend... hope it's the reason for it... don't want my car to die before i graduate... and it's annoying and damn loud even when i have my music on so high

leasaunce · 10-28-2005, 06:00 PM

or you might have a leaking exhaust? or piping

elvasoshexai · 10-28-2005, 06:06 PM

no.. it's not an exhaust leak sound... this sounds completely different

terrastrife · 10-28-2005, 09:49 PM

you might have some kind of aerodynamics bug

camry300 · 10-28-2005, 10:26 PM

restrictive exhaust ?????????

elvasoshexai · 10-29-2005, 12:42 AM

restrictive exhaust really cause this kind of noise? o, btw the car is stock.

Gary_602Z · 10-29-2005, 12:48 AM

Is it related to engine rpm or road speed ? If it is road speed I woul look at wheel bearings or tires. If it is engine rpm look for an alternator bearing or something of the like or a possible exhaust shield loose.

Gary

elvasoshexai · 10-29-2005, 01:23 AM

er.. it's hard to tell if it's rpm or road speed. because i have an auto, i can't keep it above certain rpm for too long. why i think it's road speed is because around 140 i'm around 3.5k rpm... and when i accelerate from a stop i sometimes touch 4k. even though it's loud. it's not this type of hum... so i'm assuming it's road speed. my tires are new and i've had this problem even before i replaced my tires. i just replaced a wheel bearing and i still have this problem

Gary_602Z · 10-29-2005, 01:27 AM

Did you replace the right bearing? Don't feel bad because I have done it before sometimes the damn sound travels, you think it is one side but nope it is the other!

What does it sound like?

Gary

elvasoshexai · 10-29-2005, 01:33 AM

it sounds like a reallie loud humming coming from the engine bay?.. the second i go over 140 i hear it. once i go back down to 140 or less it's gone

but if it's wheel bearings the wheel with the bad bearing has some vertical (or was it sideways) 'play' right?