Hi all sifu, I'd like to ask for your opinion on my car's matter. When I'm trying to accelerate hard, eg. Rev from 2K RPM to 6K rpm, inside my car will have a smell like as if when we're driving fast and we brake hard that sort of smell(smell of the brakes). What could the problem roughly be?

TY for all sifu for ur help

This post has been edited by headacheguy: Jun 14 2009, 06:38 PM

what smell??... can be more specific??... ur poo smell??... or urine smell??...

He already mentioned it dude.It smells like burning brake pad.

u say break.. not brake...

the smell is about the same as when we're speeding and we brake hard that sort of smell from the brakes but it's from the engine instead

ty bro for helping me to clarify that

it's brake not break

either brake smell or clutch smell...

if brake smell, check calipers got jammed or not... does ur car feels heavy during acceleration??...

if clutch smell, could be clutch slip... when was the last time u changed ur clutch pad??... any vibrations on ur clutch pedal during hard acceleration??..

nope car doesn't feel heavy during acceleration the same as the past. no vibration since the car is auto. wonder what could be the problem?

ooo... auto car ah...

first, open ur bonnet and check for any fluid leaks which could drip on hot surface, causing the strange burning smell....

have done that bro. nothing found

mayb clutch slip... causing the smell...

sometimes the car will have sound like gear slipping also. what should i do?

bro cata,auto transmission car will have clutch slip problem?

oh soli... didnt notice its auto tranny...

no idea den... haha... base on smell alone vr hard to diagnose the problem...

no others popping in to help?

sure the smell is like brake? and not electrical?
also the smell is from within? means all ur windows are close still got smell?

definitely not electrical bro. it have some sort of smell similar to brakes. the smell coming from within engine compartment i believe as all windows are closed. slow acceleration no such smell only when i accelerate hard have this smell.

timing belt??? aircond belt???

timing belt not yet expired. aircon belt is still new

same goes here..my family owned a Honda City iDSi..as u all know d iDSi doesnt pack a punch when pedal to d metal, but strangely, my cabin is filled with "some sort of engine smell" when i rev it hard..it only disappear when i change d air intake to d aircond from "recycle" to d outside air (i mean the knob there)..

been to Honda's authorized SC for 5 times, it doesnt solve the problem + money terbang..still have d smell that would eventually kill my family..

now my family is looking forward 2 change d Honda to a Proton as d problem cant be fixed by d SC themselves...it really saddens me as here in FnF really looked high on Honda...

any solution b4 i dump for a Proton?..

bro kazuhito, dont sell ur honda city. keep it as it's a very good car just accelerate slowly i guess unless you're in a hurry. but i hope i can find out the source to this problem so maybe other people having this problem i also can help la

@Kazuhito
i think its something wrong with the air circulation setting...(the button whether circulate inside only or both).....or also maybe leakage on the firewall??(guess only)....

My bet is that its a slipping clutch causing the smell,friends waja had the same problem and he ended up converting it to manual.

Definitely have it checked out.

what was the cause of the problem? any idea?

..slipped gears in auto transmission is related to ATF. TS should notice harsh gear shifting if this is the issue.
since the smell came from engine compartment, why don't TS go for an engine wash? might able to dissolve any spilled lubricant, if there's any.

This post has been edited by kapal: Jun 17 2009, 02:48 PM

I think you should check the aircond compressor's clutch, maybe it's slipping. one more thing is, you should check crank pulley, maybe the rubber damper already peel off causing it to slip.

i got the same problem, and my suspect went to spark plug

i changed the spark plug and the smell gone

the smell is like imperfect combustion....duno how to say

im using auto, turbo engine :0

Intermediate car mechanic here.

if smells like rubber burning, most probably the belts brushed against the mounting (the round thing that holds the belt in place and oso moves the belt). u have to check this on the alternator, air-cond compressor and oso ur timing belt. faulty bearings on the mountings can also cause this problem.

good luck in doing thorough inspection!

My car also have this weird smell, not engine smell or brake.

it just disappear for let say few weeks or mths & reappear again.

Even with aircon OFF & Door window down.

my city idsi also same,when accelerate hard then got the burning smell
i do wash my engine frequently,there is no leakage of any fluids
all windows r close

Must be the catalytic converter! I had the same problem on my smart until I remove it permanently.

U see, all vehicle cabin are not 100% sealed and odour from outside will seep in.

catalytic converter?
what is that and how does it looks?

Usually it looks like this...



If u notice...some car that accelerate very fast@high rpm....and u are behind it.....u can smell something like entering a saloon smell...

yaya something like saloon smell also
can just remove it like that?
wont affect anything to the car?

Depends. On some cars with dual O2 sensors, Check Engine warning will come on if the rear sensor is not position properly.

If your car only has 1 sensor (usually at the exhaust manifold), removing the cat won't harm it. It will however harm the environment (but who cares anyway). After the decat process, u may get 10-15% power gain.