Go Back   Team-BHP > Under the Hood > Technical Stuff


Reply
 
Thread Tools Search this Thread
Old 31st July 2008, 13:23   #1
Senior - BHPian
 
DCEite's Avatar
 
Join Date: Sep 2004
Location: NCR
Posts: 3,047
Thanked: 482 Times
Unhappy Outside air entering cabin even with a/c in recirculation mode.

The a/c of my car throws outside air even in the recirculation mode. This is more noticeable when the vehicle in vicinity is emitting large amount of smoke, and it enters my cabin even in the recirculation mode.

Can it be related to the fact that my a/c servicing is due. It has not been serviced for the past 4 years.
DCEite is offline   Reply With Quote
Old 31st July 2008, 13:27   #2
Senior - BHPian
 
JayD's Avatar
 
Join Date: Jun 2007
Location: Cochin! At last
Posts: 3,195
Thanked: 1,996 Times
Default

I'm experiencing the same problem in my matiz, I had the whole system checked, and there are no leaks apparently, also, the fresh air vent is closing properly. Its a major irritation when driving past dumpsters especially!!
JayD is offline   Reply With Quote
Old 31st July 2008, 13:30   #3
Senior - BHPian
 
Join Date: Sep 2007
Location: New Delhi
Posts: 3,083
Thanked: 252 Times
Default

To an extent ALL cars take in some amount of external air.
The only thing that needs to be verified is whether the recirculation and fresh air flaps are doing their job properly.
anupmathur is offline   Reply With Quote
Old 31st July 2008, 13:32   #4
Senior - BHPian
 
DieselFan's Avatar
 
Join Date: Mar 2007
Location: Bangalore
Posts: 1,570
Thanked: 233 Times
Default

As time passes the beading which fills in the gaps in the door becomes ineffective and lets in outside air and sound.
DieselFan is offline   Reply With Quote
Old 31st July 2008, 13:38   #5
Senior - BHPian
 
srishiva's Avatar
 
Join Date: Nov 2006
Location: Bengaluru
Posts: 3,580
Thanked: 823 Times
Default

It could be through the door beads. In one of my previous cars, you could feel the cool air entering through the door latch mechanism when driving fast.
srishiva is offline   Reply With Quote
Old 31st July 2008, 14:02   #6
Team-BHP Support
 
bblost's Avatar
 
Join Date: Jul 2007
Location: Hyderabad
Posts: 9,650
Thanked: 6,663 Times
Default

If air can come in, it will also go out

Use a couple of smoky agarbathis inside the fully closed car.
A person outside keeps a check to find where the smoke cames out from.
bblost is offline   Reply With Quote
Old 31st July 2008, 14:41   #7
Senior - BHPian
 
Join Date: Dec 2006
Location: pune
Posts: 1,243
Thanked: 519 Times
Default

Quote:
Use a couple of smoky agarbathis inside the fully closed car.
Simple cost effective solution. But use a container to hold agarbathi & its ash in order to avoid messing up carpet/mats.
sukiwa is offline   Reply With Quote
Old 31st July 2008, 14:44   #8
Team-BHP Support
 
Vid6639's Avatar
 
Join Date: Jul 2006
Location: Bangalore
Posts: 14,471
Thanked: 19,385 Times
Default

well as far as i know the outside air almost always comes in even if the ac is in recirculation mode. The only thing the recirculation switch does is provide a direct path.

That's why the higher end cars have the plasma filter, pollen filter and what not to clean up the outside dirty air as much as possible before it enters the cabin.

example: the captiva has a pollution filter.

Last edited by Vid6639 : 31st July 2008 at 14:46.
Vid6639 is offline   Reply With Quote
Old 31st July 2008, 14:44   #9
Senior - BHPian
 
esteem_lover's Avatar
 
Join Date: Jul 2006
Location: Madras/Py
Posts: 7,554
Thanked: 445 Times
Default

Quote:
Originally Posted by bblost View Post
If air can come in, it will also go out

Use a couple of smoky agarbathis inside the fully closed car.
A person outside keeps a check to find where the smoke cames out from.
I dont think it is a good idea & i dont believe it will work either. As suggested by anupmathur check if the air intake flap operates correctly. The car cabin is not air tight, there will be places where smell/sound can come in.
esteem_lover is offline   Reply With Quote
Old 31st July 2008, 14:45   #10
Senior - BHPian
 
wanderernomad's Avatar
 
Join Date: Jul 2007
Location: Chandigarh
Posts: 2,390
Thanked: 786 Times
Default

Nice idea, totally innovative but would it work if one wants to check if the flaps are doing their job or not? Depending upon the make of the car it might be a long wait.
wanderernomad is offline   Reply With Quote
Old 31st July 2008, 14:49   #11
Team-BHP Support
 
tsk1979's Avatar
 
Join Date: Feb 2005
Location: New Delhi
Posts: 22,955
Thanked: 15,648 Times
Default

Its the outside air flap. With time and dust lodging etc., it starts leaking. In most cars you need dashboard removal for cleanup and realignment. Don't have any idea about WagonR though.
tsk1979 is offline   Reply With Quote
Old 1st August 2008, 22:41   #12
BHPian
 
Path_Finder's Avatar
 
Join Date: Jul 2008
Location: Bangalore
Posts: 623
Thanked: 5 Times
Default

It could be because of bad or dirty flaps. In many of the cars where this is controlled thru the soft switch, it could also be some problem in the system. I had the same problem – the first time I reported, they gave back saying there is no problem. Next service I insisted on a thorough check and then it turned out be some relay problem after replacing which now it is fine.



Note from TBHP support: since it contained various [FONT], [COLOR] and [SIZE] tags. Posting with such text formatting should be avoided on Team-BHP as it is inconvenient for members to read post. Kindly go through Announcements section before proceeding.

Thanking You for your anticipated co-operation

The Team-BHP Support Staff

Last edited by Jaggu : 1st August 2008 at 22:45. Reason: Font tags
Path_Finder is offline   Reply With Quote
Old 2nd August 2008, 10:54   #13
BANNED
 
viper's Avatar
 
Join Date: Mar 2005
Location: Mumbai
Posts: 1,769
Thanked: 8 Times
Default

Hi,

The most common suspects would be the fresh air flap and the grommets through which the hoses, cables etc are passed thru the firewall. Unless you want to use the fresh air option i would suggest a simple cost effective permanent solution to that problem.

Go to any Ac mechanic/repair shop and ask him to seal of the fresh air flap with heatlon, This is what I have done in almost all my indian cars. Should not cost you more than Rs50/- including labour. Time taken 10-15 mins max.

Viper
viper is offline   Reply With Quote
Old 2nd August 2008, 12:56   #14
BHPian
 
toiingg's Avatar
 
Join Date: Oct 2006
Location: Calcutta
Posts: 601
Thanked: 70 Times
Default

But if we seal it, that means we can never use the AC in fresh air mode. Correct ?
toiingg is offline   Reply With Quote
Old 2nd August 2008, 14:36   #15
Senior - BHPian
 
danlalan's Avatar
 
Join Date: Nov 2005
Location: mumbai,JUHU
Posts: 1,597
Thanked: 133 Times
Default

Quote:
Originally Posted by viper View Post
Hi,

Go to any Ac mechanic/repair shop and ask him to seal of the fresh air flap with heatlon, This is what I have done in almost all my indian cars. Should not cost you more than Rs50/- including labour. Time taken 10-15 mins max.

Viper
HAd the same problem with my Ikon. Went to the a/c mech and he did seal the fresh air flap. Its a very simple process.


@toiingg if your need fresh air....Power your window down!!! and up again!!!
danlalan is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Engine choking in petrol mode, works fine in CNG mode fast lane Technical Stuff 12 28th August 2016 13:04
What to check for outside smell entering the car cabin? satish_appasani Technical Stuff 22 2nd October 2014 22:19
Traffic smell entering Cabin through the Boot Voyager-1 Technical Stuff 12 23rd July 2014 21:25
Skoda:Rain water entering the engine through the air filter koshy10 Technical Stuff 28 11th November 2009 11:22
CAI will suck only cold air: even if sucking in air just next from the engine :-) khan_sultan Street Experiences 19 30th June 2008 09:29


All times are GMT +5.5. The time now is 07:52.

Copyright 2000 - 2017, Team-BHP.com
Proudly powered by E2E Networks