[harish5000]

Originally Posted by hserus

Do you change the ac filter regularly? Fiestas have their filter located inside a panel under the drivers side gear shift column that needs an Allen key to open it rather than being behind the glove box like in most cars. So it often gets over looked when servicing the car.

Yes I do change the AC filters in regular intervals. I also make sure that all the filters are cleaned or changed regularly during the services.

[piyush78]

Hello Friends,
I have a rather peculiar problem with my diesel ertiga in the delhi heat this summer. On more than 3 occasions, during peak afternoon heat , my car suddenly gives a small judder every 5 seconds or so but the engine does not die down. The other thing at that very moment is loss of cold air from AC vents which is very perceptible. But the temperature gauge is always in the middle position only and coolant levels are also ok.

I think the AC compressor trips and restarts which gives a minor jerk and is felt. All these were felt say about 20 mins after starting the journey, but did not occur while retuning probably because the returns were in the evening only. At that time there is no jerk on idling , and AC is working fine.

If any of you knowledgeable folks could help me and point the direction in which I should get this problem diagnosed. I had the AC serviced about 2 months back during the start of summer, but this problem has occured now.

Thanks in Advance.

[pixantz]

Originally Posted by piyush78

during peak afternoon heat , my car suddenly gives a small judder every 5 seconds or so but the engine does not die down. The other thing at that very moment is loss of cold air from AC vents which is very perceptible.

My guess is that your compressor is getting jammed intermittently. The reasons for this could be a faulty compressor or less compressor oil or high discharge pressure(due to various possible reasons) or then a combination of the above possible causes. It could also be related to an engine issue. Is your Check-Engine light lit?

[hserus]

Originally Posted by pixantz

My guess is that your compressor is getting jammed intermittently. The reasons for this could be a faulty compressor or less compressor oil or high discharge pressure(due to various possible reasons) or then a combination of the above possible causes. It could also be related to an engine issue. Is your Check-Engine light lit?

Compressor clutch is a possible culprit but before that check the coolant level + that it hasn't detiriorated / lost colour etc.

[trinity0114]

Cross posting from another thread

My 2019 T-Jet had adequate cooling in the first year, then after a year in 2020 during the lockdown the compressor just didn't turn on, afterwards when the lockdown eased visited FCA and there was no refrigerant in the system but they couldn't find any leaks even after pressurizing the whole system for 5 hours so filled the gas and cooling was good.

Move on to 2021 cooling reduced drastically in May, again visited FCA because the car was in warranty and they kept the system pressurised overnight and changed a valve and again cooling was good for the rest of the year. Now in 2022 cooling reduced again to the extent that it was struggling to cool down the cabin even after driving for 5 hours continuously

So finally decided to skip FCA as the car was out of warranty and visited my trusted FNG(the guy who runs this is an EX-FCA expert especially in electricals)so his diagnosis was that the car has only 40% gas and he topped it to around 450 grams and played around with the low pressure valve of which the plastic cover was missing (FCA didn't bother to fix it after refilling the gas in 2021) and claimed that something was wrong with the said valve.

After the refrigerant top up we kept the engine and AC running for around 30 mins and first time in over 3 years I found that the radiator fan runs on high speed also, it kept on switching between low and high speeds and I don't recall the fan ever running at high speeds earlier, also I should mention that the cooling is now great and its become a chiller, I don't know what was wrong with the stock system or what FCA did to it twice under warranty or what special this man did even with the lack of specialist machines which most dealers have these days for HVAC works but the AC now feels amazing

[som9729]

Originally Posted by hserus

Compressor clutch is a possible culprit but before that check the coolant level + that it hasn't detiriorated / lost colour etc.

Hi hserus & Fellow BHPians,

Hope all well!

My friend has a 15yr old Scorpio in perfect working condition. Its used regularly for outstation trips etc too.

But the AC is lacking in cooling capability.
He got it checked at many places & they say there's no problem/leakage with the AC itself.

The issue is that the actual cooling capacity of the AC is low compared to cars nowadays.
And yes, practically, during peak summer, we find ourselves wishing for a better AC!

IS there a possibility of upgrading my AC?
Perhaps a new compressor or something like that ?

He intends to keep the car for a few more years atleast.

Do advise, if anyone here has done such a thing!
tx!

[kedar3223]

Cross posting from this thread
https://www.team-bhp.com/forum/techn...ml#post5453714 (Aircons! Demystifying the car air-conditioning system)

Can anyone please guide me through the possible cause of my ac problems.

Scenario:
The car is parked under warm temperature for a while. After this, if i use the car and turn on the ac, the compressor nor the radiation fan start. The ac starts after 10 15 mins of driving.

Additionally what I've noticed is, if as before the car is parked and i turn on the ac, if i spray little water on the radiator the ac compressor and the fan turn on immediately.

Note that i have checked the gas pressure checked. The cooling is good once the compressor gets going.

What could be the potential cause of this issue?

[Shubhendra]

Originally Posted by som9729

The issue is that the actual cooling capacity of the AC is low compared to cars nowadays.
And yes, practically, during peak summer, we find ourselves wishing for a better AC!

IS there a possibility of upgrading my AC?

Do advise, if anyone here has done such a thing!
tx!

I own 16 years old Scorpio CRDe which I used only for outstation trips (did 4800 kms round trip last week). It's always heavily loaded with luggage and trolley. I never faced this issue of less cooling ever.
I did 4000 kms in mid may which covered few of the hottest places in India (Nagpur, Raipur, Amravati, Gondia etc.). And yes, I travelled during day and peak afternoon.
Scorpio AC takes more time (5-10 mins) to cool down the cabin but once cooled it can be kept on Fan speed 2. I would strongly suggest to get it checked by an AC specialist.
Also, if your friend uses last row seat for passengers then he may think about getting a generic roof mounted split fan unit (only fan, not the AC) similar to be found in Safari Dicor. Its commonly available and shall help in better circulation for last row passengers.

[Mortis]

Originally Posted by kedar3223

Cross posting from this thread
https://www.team-bhp.com/forum/techn...ml#post5453714 (Aircons! Demystifying the car air-conditioning system)

Can anyone please guide me through the possible cause of my ac problems.

Scenario:
The car is parked under warm temperature for a while. After this, if i use the car and turn on the ac, the compressor nor the radiation fan start. The ac starts after 10 15 mins of driving.

Additionally what I've noticed is, if as before the car is parked and i turn on the ac, if i spray little water on the radiator the ac compressor and the fan turn on immediately.

Note that i have checked the gas pressure checked. The cooling is good once the compressor gets going.

What could be the potential cause of this issue?

Is your car a new gen Dzire by any chance? I face similar issues when it's been parked for a while and intermittently under normal conditions as well. Rapidly turning the AC compressor switch on and off a few times mostly solves the issue. My AC mechanic examined it and diagnosed it as a compressor coil issue. Going to take it up with the ASS during the next service as it's still covered by warranty

[shb19]

I own a 2007 Alto, the AC compressor shuts off randomly, it will work fine for 5-6 hrs straight without issues, some sometimes it will cut off within minutes of starting the car, switching on & off the AC starts the compressor again for some time. The issue is more frequent at higher ambient temperatures. What could be the possible reasons?

[Mortis]

Originally Posted by shb19

I own a 2007 Alto, the AC compressor shuts off randomly, it will work fine for 5-6 hrs straight without issues, some sometimes it will cut off within minutes of starting the car, switching on & off the AC starts the compressor again for some time. The issue is more frequent at higher ambient temperatures. What could be the possible reasons?

Similar to my previous post, it could be due to two issues:

1) The magnetic clutch coil of the compressor is corroded and getting stuck. It needs to be replaced.

2) The AC switch has become faulty and needs to be replaced. You might have to replace the entire AC control panel if just the switch isn't available.
After I started experiencing the coil issue, I would keep mashing the AC button to unstick the coil by rapidly turning it on and off so after changing the coil, it would still happen occasionally until I changed the switch panel.

The switch is easy to check. If the AC cuts off when it shouldn't or if the compressor doesn't kick on after a cold start, just push the switch in and hold it. If the compressor comes on when you do this then it's the switch and not the coil

[Karaboudjan]

I own a 2012 Hyundai i20, petrol model.
Off late my AC has stopped cooling.
I gave it to the authorised service centre at Modi Hyundai, Bhandup. As per the SA, the compressor has conked off, there is a leakage in the coil and also the Fan and the motor needs replacement due to the fact that these two are also not operating at a steady speed.

The total expenditure quoted is to the tune of 40K which is not viable for the car this old.

Can anybody suggest a good AC workshop in Powai?

[hserus]

This is why dealers just clean the ac filter and put it back.

First check the cooling coil
Then the ac condenser just behind the car grille might be choked with dirt, remove the grille and power wash the condenser. See how much dirt comes out (in my 2011 car where I did this, the water came out black like sewage)

Do all this at some specialist AC repair place, dealership ac tech will be focused on hit and trial replacement of as many parts as he can bill.

Originally Posted by Karaboudjan

I own a 2012 Hyundai i20, petrol model.
Off late my AC has stopped cooling.
I gave it to the authorised service centre at Modi Hyundai, Bhandup. As per the SA, the compressor has conked off, there is a leakage in the coil and also the Fan and the motor needs replacement due to the fact that these two are also not operating at a steady speed.

The total expenditure quoted is to the tune of 40K which is not viable for the car this old.

Can anybody suggest a good AC workshop in Powai?

[Karaboudjan]

Dear Hserus,
Thanks for the prompt reply. I will follow this advise and fully agree that the dealership only knows how to replace and never to repair. Have posted this query in the Directory thread to get a reference of a reliable AC repair workshop as well. Have a great day ahead.

Originally Posted by hserus

This is why dealers just clean the ac filter and put it back.

First check the cooling coil
Then the ac condenser just behind the car grille might be choked with dirt, remove the grille and power wash the condenser. See how much dirt comes out (in my 2011 car where I did this, the water came out black like sewage)

Do all this at some specialist AC repair place, dealership ac tech will be focused on hit and trial replacement of as many parts as he can bill.

[Shankyz]

Hi All,

I am unable to find an AC specialist in Noida/East Delhi/Ghaziabad in the directory and will appreciate if you could share or point me to the thread please.

Need to get my i10 AC issue fixed urgently this week for a long trip this weekend.

Thanks for your help.