Help! weird buzz when acclering

okay here is the problem..everytime i step on the gas pedal there would this is really faint (almost can't hear it when you roll down the windows) buzz..like the sound a computer makes...it's worrying me i was jus wondering what i should do..any ideas?
btw i own a 90 civic hb si

Its probably from the speakers or the stereo. You need a noise filter.

no my radio is broken and that buzz only sounds when i step on the gas pedal

could it be the fuel injectors needs cleaning or the spark plugs need replacing?

Any chance it could be a Alternator Wine ????
just a thought.

Noise filter huh? My stupid passenger side speaker rattles or some crap and I know it has no filter thing on it. Does that screen really take that much sound out?

hmm Alternator wine? i suppose you mean wire?
i thought the alternator only deals with the battery and not accleration?

does it make the noise when you rev the engine in park or neutral or just while accelerating?

nope not in N or revving

no he means alternator whinning because your alt is spinning. maybe its your ac or power steering. try and check your alt, power steering, and ac. because these all spin with bearings, so you should check it out

it cant be power steering but ac..as in air condition? i dont think theres a prob with that

so what do i do now ..replace the alternator?

you dont need to replace your alternator unless its bad. ac as in air conditioning, like the compressor. is your car an auto or a manual ?
also did this noise just start or is this the first time you have noticed it ?
and why cant it be the power steering ? you need to pop your hood and try and listen and find out where the sound it coming from. we cant really tell you what to do, we just make suggestions on what it could be. you need to find out where the sound is coming from.

you dont need to replace your alternator unless its bad. ac as in air conditioning, like the compressor. is your car an auto or a manual ?
also did this noise just start or is this the first time you have noticed it ?
and why cant it be the power steering ? you need to pop your hood and try and listen and find out where the sound it coming from. we cant really tell you what to do, we just make suggestions on what it could be. you need to find out where the sound is coming from.


i didn't turn on the ac so it shouldn't be the ac
it is a civic hb si 90 standard
well i just got the car and it's first time noticing it after driving a couple of times so im assuming it was there already but never really heard it
it can't be power steering b/c the car doesn't have power steering
i dont think it's hearable when im revving or acclering in N it only does the "computer whizzing" when i acclering

almost like a ticking sound coming from under the dash at idle and then increasing as you accelerate? mine does that too and I'm still trying to work it out.

yea sorta but it doesnt sound unless i acclerinate

Originally posted by onetrueshyguy
okay here is the problem..everytime i step on the gas pedal there would this is really faint (almost can't hear it when you roll down the windows) buzz..like the sound a computer makes...it's worrying me i was jus wondering what i should do..any ideas?
btw i own a 90 civic hb si
Ive seen this on a few 4gs If you're lucky you may just have a loose heat shield on the exhaust or even just a loose muffler clamp. Or you may be a victim of the infamous Honda "A-pipe" rattle It seems that many Honda exhaust systems have a double pipe near the engine, with an inner and outer tube. This is in the interest of keeping the exhaust gasses heated for the catalyic converter. Unfortunately the welds on the inside don't always hold, and you can get a loose inner pipe rattling at certain times when the engine speed matches its natural point of resonance. To fix it you could replace the pipe assembly, but that's expensive. A cheaper way is to simply cut two slots crosswise about a quarter inch apart, 1/3 of the way through the outer pipe. Then with a punch, ding the narrow strip thus created inward until it touches the inner pipe. Fill the hole with brazing metal, making sure some of it brazes the strip to the inner pipe. Make sure you don't leave any holes that will leak exhaust gasses. (it actually could be numerous things, but this is common)

if i leave things the way they are will it be problematic in the furture?

shoulden't be a problem, as long as you don't mind the noise? But its a pretty easy fix as I specified earlier.

yea it's pretty annoying..but exams are coming up not much time to do anything

but you mentioned it could be something else?

Originally posted by onetrueshyguy
yea it's pretty annoying..but exams are coming up not much time to do anything

but you mentioned it could be something else?
yes exactly where is the noise coming from? I know its hard to tell due to it only happening when you accelerate, try to find out if you can. As for now it dosen't seem that you are having any symptoms besides the noise? I don't believe that you have anything to worry about.

uh-oh...man i check it out again and now im pretty sure it's my front part of the system and not the muffler
because when i step on the acclerator really hard the sound got a lot louder and then my "check engine" light came on

what should i do?!

what code is it throwing ?

also you said it was whinning, but then someone said ticking and you said yeah. so which one is it

also doesnt matter if you turn your as on or not, the compressor spins on bearing, if the bearings are going out then it would make a whinning noise.

knocking ? valves ?

its hard to describe the sound from it sounds like the back of your compuerter..like a whirring noise

it's weird cuz if i put it in N then rev it i dont hear anything but if i am on the road then i do

I found a lot of other people with a ticking noise when they accelerate. In fact, I'm one of them. I have a 95 Nissan Pathfinder with the same problem, passenger side. It ticks when i accelerate, especially if in gear. It seems to tick at every RPM, it sounds kinda like a motor cycle. Its gotten louder in the past month. It didn't do it in Nuetral before but now it does. Its a stick shift. How do I check the alternator thing? Also, it gets louder when the engine works harder and it ticks faster at faster RPM. Is that the same as your problem?

PS: My sister has a honda civic that had a weird buzz sound when she accelerates. It sounded like a tie fighter from star wars. Kinda electronic. She hired some wannabe mechanic to put a new engine in for a grand. It fixed the problem, or at least he had fixed it before giving it back. Her car had trouble starting and died sometimes. All the problems happened about the same time. I think they were linked. When she changed out the engine there have been no problems since.

My friend's honda makes a fan noise when he hits the gas but he has custom intake. Maybe its intake related? Gotta describe the noise or record it and post it on a web page so these guys can hear it then toss us the URL

but does that affect the performance of the car/ because when it does the sound the car jerks up and down, and then if i dont release a bit of pressure on the gas then the CE light comes on

possibly the whirring sound is your speedo sensor. and it might be throwing the code for that. is your speedometer working? think about this, what stuff only operates when you are moving? its gonna be everything after the input shaft on your transmission. anything else that rotates will be spinning whenever your engine runs, and since you didnt hear it while in neutral revving, the chances of it being the alternator or AC compressor or slim.

of course theres a chance that the noise only happens when the engine is under a load, in which case it could be inside the engine or the alt. or compr. try this, put it in 1st, and with the ebrake up, try to accelerate. the car wont move much if at all, but you will be putting the engine under a load. which means you can rule out the engine itself or the alt. and compr. if the noise isnt heard. if it isnt heard, move on to the tranny and the rest of the drivetrain.

my hypothesis is: wheel bearings or internal bearings in the tranny. or the already mentioned speedo sensor.

so the disturbitor has nothing to do with it?

does it do it whenever you hit the gas, or only when you make the car accelerate? if it does it whenever you rev the engine, than it could be a lot of things. if it only does it while you are putting the engine under a load to make it accelerate, then the possibilities narrow a lot.

it only does it when its under a load..it rarely does it when i accleraterate on 1st gear on a normal startup...what could be the possibilities

thanks

Ok:

SiR: Noise comes from passenger (RHD remember) side. Not the ECU, not the VSS (I replaced mine) not a loose heat shield or anything else jangling. It's not the PS pump, alternator or A/C pump (repbuilt, replaced, disconnected respectively. The only thing I can think of is it's the injectors

Cheers
Pete

Mine does it when the engine is under a load or working hard, ie: take offs, hills. If I don't accelerate and am in the right gear or coasting it doesn't do it. It sounds kinda like a motorcycle or a baseball card in the spokes of a bike. You said that if it does it under a load that it narrows down what it could be substantially. I'm afraid it'll be engine. How can I check? What about the alt or comp? How do I check those?

Someone online told me that nissans are noutorious for developing a loose timing chain at about 80 thousand miles. He said that I should install a new timeing chain. My SUV uses dual chains on a V6, a kit is about 140 bucks. It should be an easy do it yourselfer. He said that my tourqe converter is probably bad and that I should take it out and have it rebuilt for about 80 bucks. I hope this helps.

You need to increase your knowledge of Hondas :? They ALL run timing belts, not chains. Torque convertors are for autos only, I don't think there are too many auto ED/EF drivers here.

'bout what you'd expect from an SUV driver though :P

I found the problem! It was an exhaust leak near the engine, at the manifold.