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


Reply
 
Thread Tools Search this Thread
Old 24th March 2011, 11:42   #1
BHPian
 
500modder's Avatar
 
Join Date: Sep 2008
Location: mumbai
Posts: 76
Thanked: 10 Times
Default Advice needed - ANHC Airconditioner Smell

I have a new Honda City. It's a November 2010 model and there's only 3500km on the clocks.

I have noticed that when the AC is on with the vent closed, and I rev the car above 3000 rpm, I get an acrid, chemical burning smell in the car. It doesn't smell musty like mildew - more like a burning chemical.

Even stranger, the smell wafts into the car repeatedly every time I rev it in a gear, or even when the car is at a standstill and revving in neutral. It either stops when the revs are brought low, or it is at such a low level that I can't smell it.

I've taken it to the Arya Honda workshop in Sewri 3 times to check the problem. They agree there is a smell, but they can't seem to fix it. They've blown out the AC ducts and cleaned and washed the filters with Detol. The smell is still very much there.

The car has never seen a monsoon, so I can't believe it would be fungus or mildew. I've heard that it could be the anti-rust under-body treatment burning. But how would this get into the AC?

Any ideas on what I should do, or tell the workshop to do next?
500modder is offline   Reply With Quote
Old 24th March 2011, 20:01   #2
Senior - BHPian
 
Sn1p3r's Avatar
 
Join Date: Jul 2009
Location: Germany
Posts: 1,017
Thanked: 224 Times
Default Re: Advice needed - ANHC Airconditioner Smell

There is always a smell post usage of AC (very normal), thus at each end of your drive, switch off the AC with fan still on and then let the heater on for two minutes. This makes my car odor free when I restart for the next drive.

Try this, if this fails, remove the carpeting and then again drive with AC on. If the issue persist, they should check the vent operation again. Also this might be lead to some other issue.

Keep us posted.
Sn1p3r is offline   Reply With Quote
Old 24th March 2011, 20:36   #3
Senior - BHPian
 
Join Date: Nov 2007
Location: Bangalore
Posts: 2,376
Thanked: 528 Times
Default Re: Advice needed - ANHC Airconditioner Smell

I have noticed a burning/heated smell in my ANHC when reved, but I thought it is specific to AT model. I did not think it is coming from AC.
Guna is offline   Reply With Quote
Old 24th March 2011, 20:42   #4
GTO
Team-BHP Support
 
GTO's Avatar
 
Join Date: Feb 2004
Location: Bombay
Posts: 47,735
Thanked: 89,266 Times
Default Re: Advice needed - ANHC Airconditioner Smell

If it helps, here's two threads on a related issue:

Aircon cleaning to remove bacteria & fungi (Car Air-Conditioner Cleaning to remove bacteria & fungi)

Foul smell from HVAC (Foul Smell from Blower / Fan / HVAC)
GTO is offline   Reply With Quote
Old 25th March 2011, 00:07   #5
Senior - BHPian
 
bluevolt's Avatar
 
Join Date: Jan 2011
Location: New Delhi
Posts: 2,963
Thanked: 2,211 Times
Default Re: Advice needed - ANHC Airconditioner Smell

I have revved my ANHC till 5K and never noticed any burning smell as such. But yes there is a smell as mentioned by Sn1p3r, but that's normal.

I don't find any relation between engine revving and AC operation. But yes there can be overheating in some cases.

Can this be related to engine overheating?
bluevolt is offline   Reply With Quote
Old 25th March 2011, 01:19   #6
Distinguished - BHPian
 
dhanushs's Avatar
 
Join Date: Oct 2009
Location: Bathery/BLR
Posts: 3,446
Thanked: 4,055 Times
Default Re: Advice needed - ANHC Airconditioner Smell

I looks like you are smelling your engine compartment. Does the smell persist when the AC is in the recirculating mode?.
dhanushs is offline   Reply With Quote
Old 27th March 2011, 22:15   #7
BHPian
 
Join Date: Sep 2010
Location: New Delhi
Posts: 134
Thanked: 151 Times
Default Re: Advice needed - ANHC Airconditioner Smell

@500modder - Have you done underbody antirust coating in your car? If yes then there source of smell is due to improper application of anti rust coating over silencer.Check the boot near spare wheel for any oil or greasy substance.

I faced similar problem of burning rubber/plastic smell and was clueless for 6 months,until I showed a picture of boot of my car to a friend and he pointed out that the heat shield along with rubber bushes(boots) have melted due to silencer coming in contact with body of car due to anti rust coating over silencer which sticked to body leading to melting of rubber bushes inside and smell of burning rubber/plastic in the car could be due to it due to heat from silencer.

I have given my car to MASS for removing the anti rust coating from silencer.The sound deadner in boot will be removed and replaced with new one and rubber boots with new one.I hope this smell from Air conditioner disappears with this repair.

Last edited by FrozeninTime : 27th March 2011 at 22:17. Reason: to correct errors in sentences
FrozeninTime is online now   Reply With Quote
Old 31st March 2011, 15:58   #8
BHPian
 
500modder's Avatar
 
Join Date: Sep 2008
Location: mumbai
Posts: 76
Thanked: 10 Times
Default Re: Advice needed - ANHC Airconditioner Smell

First of all, thank you guys for your feedback. I've been tearing my hair out trying to figure this out.

Quote:
Originally Posted by FrozeninTime View Post
@500modder - Have you done underbody antirust coating in your car? If yes then there source of smell is due to improper application of anti rust coating over silencer.Check the boot near spare wheel for any oil or greasy substance.
This sounds really interesting. I have done the under-body treatment. Will definitely check out what you said. One question: the smell is most pronounced when the AC is in recirculate mode. How would the burning smell get into the AC from the boot with the recirculate vent closed? Is there an intake for the AC system there?

Quote:
Originally Posted by dhanushs View Post
I looks like you are smelling your engine compartment. Does the smell persist when the AC is in the recirculating mode?.
The smell is most pronounced in recirculate mode. When the vent is open it almost disappears. How could it be coming from the engine compartment?

Quote:
Originally Posted by bluevolt View Post
I don't find any relation between engine revving and AC operation. But yes there can be overheating in some cases. Can this be related to engine overheating?
Bluevolt, in my case the overheat light doesn't come on. And anyway I'm hardly pushing the car to 4000rpm max. This isn't enough to overheat a brand new ANHC.

Quote:
Originally Posted by Guna View Post
I have noticed a burning/heated smell in my ANHC when reved, but I thought it is specific to AT model. I did not think it is coming from AC.
Guna, perhaps in your case you are heating up the engine enough to burn some lose engine oil by spirited driving. But, in my case my car is so new I've hardly revved it like that. I'm still trying to treat the young cylinder bores gently
500modder is offline   Reply With Quote
Old 28th September 2012, 15:29   #9
Team-BHP Support
 
Rehaan's Avatar
 
Join Date: Feb 2004
Location: Bombay
Posts: 22,369
Thanked: 22,586 Times
Default Re: Advice needed - ANHC Airconditioner Smell

Bumping up an old thread with a similar issue...

Quote:
Originally Posted by 500modder View Post
I get an acrid, chemical burning smell in the car. It doesn't smell musty like mildew - more like a burning chemical.
A friend with a brand new VW Vento TDI just called me. Its run < 1,500 kms.

He was on his way from Mumbai to Goa, and just 60kms before Panjim he started to get a strange chemical smell. Thinking it was from outside, he put up the windows and turned the A/C on -- only to be blasted by the smell. He said it smelled like they were in a chemistry lab. Everyone in the car started coughing and had watery eyes. They stopped and called VW for a tow to be on the safe side.

Any idea what it could have been? I couldn't think of anything other than an A/C gas/refrigerant leak until bblost pointed me to this thread. Interesting theory about something burning (and possible too, since they had been driving for 6-8 hours).

500modder - did you ever figure out a solution to your problem? Or did the problem just 'burn away' ?

cya
R

PS - Does anyone know what r-134a smells like?

EDIT: VW has sent a flatbed for pickup.
Name:  deven.jpg
Views: 1516
Size:  228.3 KB

Last edited by Rehaan : 28th September 2012 at 15:56.
Rehaan is online now   Reply With Quote
Old 28th September 2012, 15:48   #10
Senior - BHPian
 
planet_rocker's Avatar
 
Join Date: Sep 2006
Location: Bong-land
Posts: 2,320
Thanked: 365 Times
Default Re: Advice needed - ANHC Airconditioner Smell

AC gas smells sweet. It is kind of oil based, i was told. Chemical burning smell can relate to either coolant leak (most unlikely) or Battery water (since it is acidic) leak.

Did you get any updates, did your friend open the bonnet to check?
planet_rocker is offline   (1) Thanks Reply With Quote
Old 28th September 2012, 17:40   #11
Team-BHP Support
 
Rehaan's Avatar
 
Join Date: Feb 2004
Location: Bombay
Posts: 22,369
Thanked: 22,586 Times
Default Re: Advice needed - ANHC Airconditioner Smell

Quote:
Originally Posted by planet_rocker View Post
Did you get any updates, did your friend open the bonnet to check?
He said he'll update me when the mechanics figure it out.

He did open the bonnet when the car was off, but said there was no noticeable smell there. He then smelled the AC vents (with the car still off) and he got the smell again.

cya
R
Rehaan is online now   (1) Thanks Reply With Quote
Old 4th October 2012, 10:50   #12
BHPian
 
Blackbolt's Avatar
 
Join Date: Oct 2012
Location: Mumbai
Posts: 29
Thanked: 43 Times
Default Re: Advice needed - ANHC Airconditioner Smell

Quote:
Originally Posted by Rehaan View Post
He said he'll update me when the mechanics figure it out.

cya
R
Hello,

This is my first post on T-BHP, trust me I wanted to start off with my ownership thread and not with an issue faced by my Vento TDI “Blackbolt”

Thanks Rehaan for posting the issue above, following is the update:

I spoke to my car supervisor Mr. Swapnil @ Caculo Automotive Panjim on Saturday 29th September asking him for his analysis. He said they had received a couple of cars which had a condenser problem. He will start from the air-con vents and let me know. Later that evening, he says they have not detected anything yet and are opening the entire dashboard to check further.

On Monday I register a complain by writing an email to 'customer.care@volkswagen.co.in' Its surprising to see that they have not responded even after 3 days! I atleast expected an automated response saying that they will look in to the problem and my query number is XYZ!

I called up Mr. Swapnil on Wednesday; he says they could not identify any problem in the car. The on board computer is not showing any error, they have checked the condenser and there is no problem there also. They have filled AC gas again, taken a 20 kms test drive and all everything is alright.

I am flying down to Goa later today and will be getting my Blackbolt back on Sunday!

I will keep you guys posted.

Cheers.

Mod team note: Removing [Font] tags, please avoid Copy Paste from external font editors, also do a Preview before Submitting posts. Thanks.

Last edited by Jaggu : 4th October 2012 at 11:07. Reason: Removing [Font] tags, please avoid Copy Paste from external font editors, also do a Preview before Submitting posts. Thanks
Blackbolt is offline   Reply With Quote
Old 10th October 2012, 16:27   #13
BHPian
 
Blackbolt's Avatar
 
Join Date: Oct 2012
Location: Mumbai
Posts: 29
Thanked: 43 Times
Default Re: Advice needed - ANHC Airconditioner Smell

Update:

Got my car back from Goa on Sunday, drove it for 622 kms (10 hours), no problem at all.

I'm just surprised as VW also have no clue what was wrong with the car. Swapnil acknowledged the fact that when the car came in, there was a chemical like smell coming from the air vents.

Job card does not mention anything, tried probing Swapnil to figure out if they have changed something faulty but he said nothing! I was not charged by VW for ac gas refueling and condenser checking.

VW customer care guys have still not replied to my email (very disappointed), all the coordination for getting the car back was done by calling Swapnil, who indeed was very helpful.

I'm done scratching my head as to what could have gone wrong? The drive back was so awesome that I've almost forgotten the issue.

Thanks all for the help.

Cheers.
Blackbolt is offline   (3) Thanks Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
PICS : Gypsy with power steering + Airconditioner wbd8779 4x4 Vehicles 27 2nd December 2010 21:31
Airconditioner in my Accent CRDi abhilashvk Modifications & Accessories 15 16th July 2008 01:07
Misbehaving Airconditioner Ricky_63 Technical Stuff 17 9th May 2007 12:16
Baleno airconditioner problem Ram Technical Stuff 11 2nd May 2007 13:48


All times are GMT +5.5. The time now is 16:54.

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