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


Reply
 
Thread Tools Search this Thread
Old 3rd April 2012, 01:27   #46
Senior - BHPian
 
vigsom's Avatar
 
Join Date: Feb 2006
Location: AUH<->MAA
Posts: 1,722
Thanked: 581 Times
Default Re: A/c Evaporator coil fails 2nd time in my Ford Fiesta

Quote:
Originally Posted by IndigoXLGrandDi View Post
@vigsom,

How to check whether Expansion Valve is faulty or not? If it is faulty, what is the cost of repair (or replacement if no repair possible)?
If the refrigerant charge is good and the compressor , healthy the expansion valve can be declared the culprit only if the ac is not cooling.

The expansion valve is what provides the refrigeration effect(liquid flashes into vapour state and that is how the chilling takes place).

If the expansion valve is not working even with a normal refrigerant charge it would indicate:
  • abnormally high hi side pressure eg.400psi
  • abnormally low hi side pressure eg.150psi
In your case,I see no issue

BTW , the hissing should not cause any concern

Listen carefully when a brand new direct cool refrigerator is running - you'll hear some gurgling/hissing - does anyone bother about this noise?

Last edited by vigsom : 3rd April 2012 at 01:29. Reason: addition
vigsom is offline   (1) Thanks Reply With Quote
Old 4th April 2012, 19:57   #47
BHPian
 
sam_sant2005's Avatar
 
Join Date: Jan 2008
Location: Bangalore
Posts: 457
Thanked: 151 Times
Default Re: A/c Evaporator coil fails 2nd time in my Ford Fiesta

And now my brand new 2012 Ford Fiesta Classic 1.4 TDCi - the a/c cooling is pathetic. Any inputs?

Current ODO 1700kms, hardly 30 days since purchase. Experiencing poor cooling during the daytime since Day 1. I thought it was due to the summer heat (Iam in Blore). But when I drove a Wagon R and a Beat Diesel, I realized I have issue with my a/c. It isnt even cooling even after a 30 mins travel in hot sun. Always I have to keep the blower in 3rd or 4th to atleast 'feel' that there is some a/c. Though, it cools reasonably well during the night and I put in 1st or 2nd blower. Should I start getting very very upset having sold my 1.5 yr old Swift Diesel last month ?

Note: Unlike Maruti, I am not able to find out the a/c pipe glass window where you check for bubbles. Can anyone help me out plz!

Note2: Noticing HUGE water condensation from the center of the car. Looks excessive to me.

Last edited by sam_sant2005 : 4th April 2012 at 20:03.
sam_sant2005 is offline   Reply With Quote
Old 4th April 2012, 20:02   #48
Senior - BHPian
 
sagarpadaki's Avatar
 
Join Date: May 2010
Location: Bengaluru
Posts: 2,632
Thanked: 1,257 Times
Default

Quote:
Originally Posted by sam_sant2005
And now my brand new 2012 Ford Fiesta Classic 1.4 TDCi - the a/c cooling is pathetic. Any inputs?

Current ODO 1700kms, hardly 30 days since purchase. Experiencing poor cooling during the day since day one. I thought it was due to the summer heat (Iam in Blore). But when I drove a Wagon R, I realized I have issue with my a/c. It isnt even cooling even after a 30 mins travel. Always I have to keep the blower in 3rd or 4th to atleast 'feel' that there is some a/c. Though, it cools reasonably well during the night and I put in 1st or 2nd blower. Should I start getting very very upset having sold my 1.5 yr old Swift Diesel last month ?

Note: Unlike Maruti, I am not able to find out the a/c pipe glass window where you check for bubbles. Can anyone help me out plz!
Check the cooling in other fiesta for a comparison when you visit the service center
sagarpadaki is online now   Reply With Quote
Old 5th April 2012, 10:22   #49
Senior - BHPian
 
vigsom's Avatar
 
Join Date: Feb 2006
Location: AUH<->MAA
Posts: 1,722
Thanked: 581 Times
Default Re: A/c Evaporator coil fails 2nd time in my Ford Fiesta

Quote:
Originally Posted by sam_sant2005 View Post
the a/c cooling is pathetic. Any inputs?

I thought it was due to the summer heat (Iam in Blore).

Note2: Noticing HUGE water condensation from the center of the car. Looks excessive to me.
I have a feeling your temperature control ring is set about halfway - hot+cold air mix

Please check if your ac is on recirculation mode,the temperature ring is set all the way to coolest(blue band) and the compressor switch is on (silly but still !!!)

Also if you see water condensation inside the car,the evaporator coil drain pipe must have come off ; please get that refitted
vigsom is offline   Reply With Quote
Old 5th April 2012, 10:22   #50
BHPian
 
Join Date: Nov 2009
Location: Noida
Posts: 519
Thanked: 175 Times
Default Re: A/c Evaporator coil fails 2nd time in my Ford Fiesta

Quote:
Originally Posted by sam_sant2005 View Post
And now my brand new 2012 Ford Fiesta Classic 1.4 TDCi - the a/c cooling is pathetic. Any inputs?

Current ODO 1700kms, hardly 30 days since purchase. Experiencing poor cooling during the daytime since Day 1. I thought it was due to the summer heat (Iam in Blore). But when I drove a Wagon R and a Beat Diesel, I realized I have issue with my a/c. It isnt even cooling even after a 30 mins travel in hot sun. Always I have to keep the blower in 3rd or 4th to atleast 'feel' that there is some a/c. Though, it cools reasonably well during the night and I put in 1st or 2nd blower. Should I start getting very very upset having sold my 1.5 yr old Swift Diesel last month ?

Note: Unlike Maruti, I am not able to find out the a/c pipe glass window where you check for bubbles. Can anyone help me out plz!

Note2: Noticing HUGE water condensation from the center of the car. Looks excessive to me.
Since most mechanicals are same between Fiesta Classic and Figo, I am tempted to think that AC would be same as well. If so, there should be an issue in your car as Figo AC is quite good even at temps in excess of 40'C. Is there any mention in the manual about compressor size of fiesta classic?
amit1234singla is offline   (1) Thanks Reply With Quote
Old 5th April 2012, 10:59   #51
Senior - BHPian
 
vnabhi's Avatar
 
Join Date: May 2007
Location: DC -> DC
Posts: 5,272
Thanked: 1,236 Times
Default Re: A/c Evaporator coil fails 2nd time in my Ford Fiesta

@sam_sant2005-----Please get your AC checked by the dealer. The Fiesta and Figo have the most powerful AC in the given segment.

My Fiesta's AC cools nearly twice as much than my WagonR. Only when temperatures soar above 40 degrees do I put the fan speed on the second slot: the rest of the time slot # 1 is chilly enough.

As someone said, please check the heater knob's position and also the air-flow knob. I hope the air is not directed to the windscreen in defrost mode.
vnabhi is offline   (1) Thanks Reply With Quote
Old 5th April 2012, 11:02   #52
BHPian
 
sam_sant2005's Avatar
 
Join Date: Jan 2008
Location: Bangalore
Posts: 457
Thanked: 151 Times
Default Re: A/c Evaporator coil fails 2nd time in my Ford Fiesta

Quote:
Originally Posted by vigsom View Post
I have a feeling your temperature control ring is set about halfway - hot+cold air mix

Please check if your ac is on recirculation mode,the temperature ring is set all the way to coolest(blue band) and the compressor switch is on (silly but still !!!)

Also if you see water condensation inside the car,the evaporator coil drain pipe must have come off ; please get that refitted
Thanks, but I have had those things right! Dont feel silly bcoz people do make such mistakes and these are definitely the basic troubleshooting steps.Though I have been following cars for the past 15 yrs so these misses not for me ! And hey the condensation is not inside the car. Its right from the center of the car BELOW the car. When I park it somewhere after a run it wets the whole area.

Quote:
Originally Posted by amit1234singla View Post
Since most mechanicals are same between Fiesta Classic and Figo, I am tempted to think that AC would be same as well. If so, there should be an issue in your car as Figo AC is quite good even at temps in excess of 40'C. Is there any mention in the manual about compressor size of fiesta classic?
My understanding is that Fiesta Classic and Figo share these things - Engine, Dashboard, Steering Wheel, A/c and Suspension.

Iam down with a flu. So planning to take the car to the Service Center only by this weekend. Before that it will be good to have as much information as I can to avoid a revisit.

Last edited by sam_sant2005 : 5th April 2012 at 11:08.
sam_sant2005 is offline   Reply With Quote
Old 5th April 2012, 11:14   #53
Senior - BHPian
 
vigsom's Avatar
 
Join Date: Feb 2006
Location: AUH<->MAA
Posts: 1,722
Thanked: 581 Times
Default Re: A/c Evaporator coil fails 2nd time in my Ford Fiesta

Quote:
Originally Posted by sam_sant2005 View Post
the condensation is not inside the car. Its right from the center of the car BELOW the car. When I park it somewhere after a run it wets the whole area.
The condensation is a normal thing ; no worries

Please get the system pressures(Hi side and low side) checked ; that would throw some light
vigsom is offline   Reply With Quote
Old 5th April 2012, 11:18   #54
BHPian
 
sam_sant2005's Avatar
 
Join Date: Jan 2008
Location: Bangalore
Posts: 457
Thanked: 151 Times
Default Re: A/c Evaporator coil fails 2nd time in my Ford Fiesta

Quote:
Originally Posted by vigsom View Post
The condensation is a normal thing ; no worries

Please get the system pressures(Hi side and low side) checked ; that would throw some light
Does ford use some other technology? I have not seen this in any of my previous cars - M800, Esteem and Swift D. Initially I thought the radiator hose gave away!

Last edited by sam_sant2005 : 5th April 2012 at 11:23.
sam_sant2005 is offline   Reply With Quote
Old 5th April 2012, 15:45   #55
Senior - BHPian
 
vigsom's Avatar
 
Join Date: Feb 2006
Location: AUH<->MAA
Posts: 1,722
Thanked: 581 Times
Default Re: A/c Evaporator coil fails 2nd time in my Ford Fiesta

^^ No, not at all

The a/c reduces the humidity of air inside,so the water vapour gets condensed on the outside of the cooling coil(evaporator) - that's what you see on the outside.

Once you switch off the ac and park the car,you'll see approx 200ml of water which would have drained out of the evaporator casing.

anyways,keep the forum updated on what happened.
vigsom is offline   Reply With Quote
Old 5th April 2012, 18:19   #56
Senior - BHPian
 
vnabhi's Avatar
 
Join Date: May 2007
Location: DC -> DC
Posts: 5,272
Thanked: 1,236 Times
Default Re: A/c Evaporator coil fails 2nd time in my Ford Fiesta

Quote:
Originally Posted by sam_sant2005 View Post
Does ford use some other technology? I have not seen this in any of my previous cars - M800, Esteem and Swift D. Initially I thought the radiator hose gave away!
I invariably find water droplets below my Waggie after swiching off the car, when the AC was used.

Ditto for the Fiesta.
vnabhi is offline   Reply With Quote
Old 4th May 2012, 16:25   #57
BHPian
 
Optimus7's Avatar
 
Join Date: Mar 2012
Location: Chennai
Posts: 111
Thanked: 12 Times
Default Re: A/c Evaporator coil fails 2nd time in my Ford Fiesta

Quote:
Originally Posted by sam_sant2005 View Post
And now my brand new 2012 Ford Fiesta Classic 1.4 TDCi - the a/c cooling is pathetic. Any inputs?

Current ODO 1700kms, hardly 30 days since purchase. Experiencing poor cooling during the daytime since Day 1. I thought it was due to the summer heat (Iam in Blore). But when I drove a Wagon R and a Beat Diesel, I realized I have issue with my a/c. It isnt even cooling even after a 30 mins travel in hot sun. Always I have to keep the blower in 3rd or 4th to atleast 'feel' that there is some a/c. Though, it cools reasonably well during the night and I put in 1st or 2nd blower. Should I start getting very very upset having sold my 1.5 yr old Swift Diesel last month ?

Note: Unlike Maruti, I am not able to find out the a/c pipe glass window where you check for bubbles. Can anyone help me out plz!

Note2: Noticing HUGE water condensation from the center of the car. Looks excessive to me.
I own a 5 year old Fiesta, the AC is really powerful. I always have my blower speed in 1, rarely 2, and never in 3,4. It cools the car in about 10 minutes, then I either have to switch off the AC, or set the cooling adjust knob to the 10 o clock position.

The condensation is normal, no need to worry about that. Take your car to FASS, and check the cooling gas and for any leak in the AC hose pipe, which is a common problem in Fiesta.

Edit: Just realized its been a month since the last post in this thread. Any updates Sam.

Last edited by Optimus7 : 4th May 2012 at 16:27.
Optimus7 is offline   Reply With Quote
Old 4th May 2012, 21:27   #58
Senior - BHPian
 
vnabhi's Avatar
 
Join Date: May 2007
Location: DC -> DC
Posts: 5,272
Thanked: 1,236 Times
Default Re: A/c Evaporator coil fails 2nd time in my Ford Fiesta

Quote:
Originally Posted by Optimus7 View Post
I own a 5 year old Fiesta, the AC is really powerful. I always have my blower speed in 1, rarely 2, and never in 3,4. It cools the car in about 10 minutes, then I either have to switch off the AC, or set the cooling adjust knob to the 10 o clock position.

The condensation is normal, no need to worry about that. Take your car to FASS, and check the cooling gas and for any leak in the AC hose pipe, which is a common problem in Fiesta.

Edit: Just realized its been a month since the last post in this thread. Any updates Sam.
+1 to your views, but in my case, the car cools in 2 to 3 minutes, and not 10. Even if I park in the hot Hyderabad sun, it does not take even 5 mintues to cool down. And it is around 42 Deg Celsius here.

Last edited by vnabhi : 4th May 2012 at 21:28.
vnabhi is offline   Reply With Quote
Old 5th May 2012, 01:29   #59
Distinguished - BHPian
 
dhanushs's Avatar
 
Join Date: Oct 2009
Location: Bathery/BLR
Posts: 3,446
Thanked: 4,057 Times
Default Re: A/c Evaporator coil fails 2nd time in my Ford Fiesta

Quote:
Originally Posted by sam_sant2005 View Post
Does ford use some other technology? I have not seen this in any of my previous cars - M800, Esteem and Swift D. Initially I thought the radiator hose gave away!
Condensation mostly means, the AC is working OK. Check the fan for proper functioning, and the ducts for leakage. Also, the cabin air filter.
dhanushs is offline   Reply With Quote
Old 14th February 2013, 16:53   #60
BHPian
 
penpavan's Avatar
 
Join Date: Oct 2007
Location: Blore
Posts: 381
Thanked: 131 Times
Default Re: A/c Evaporator coil fails 2nd time in my Ford Fiesta

Hi Guys,

Our Ford Fiesta's A/C is not cooling.
The problem had first occurred in 2011 (car purchased in 2007)
The service guys replaced A/C Core for Rs. 11k and then it was fine until last 2-3 months when the cooling effect deteriorated.
Now it does not cool. Went to service station again and they checked for the leak.
Came back saying it is happening again in the core and it has to be replaced.
When I asked about having it changed only in 2011, the service advisor says that it is possible that it reoccurs and is a common problem in Fiesta.

He also says that warranty of the core is only 10k KMS or 6 months from the date of installation. Hence it is kinda expected.

Confused. Any help much appreciated.
penpavan is online now   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Spied: All-new 2017 Ford Fiesta for the first time RavenAvi The International Automotive Scene 6 29th November 2016 21:24
Corolla A/c Evaporator Replacement - Steps and Pics! vigsom Technical Stuff 7 18th May 2012 20:44
Please help me decide: Fiesta S or Fiesta ZXi? EDIT: Booked Fiesta S! Pics on pg5. frankmehta Sedans 108 18th August 2009 13:43
Ford Fusion fails crash test (apparently?) rkg The Indian Car Scene 12 8th March 2006 08:00


All times are GMT +5.5. The time now is 15:36.

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