Climbing Up Hill with A/C On
- Thread Starter ilango[speed thirst]
- Start date
Re: Climbing Up Hill with A/C On.
BUT I FEEL THAT Climbing uphill we should put ac on with recirculating mode if your behind a polluting truck only problem in using ac uphill is you may have to downshift gears
BUT I FEEL THAT Climbing uphill we should put ac on with recirculating mode if your behind a polluting truck only problem in using ac uphill is you may have to downshift gears
Last edited by a moderator:
Re: Climbing Up Hill with A/C On.
I live in Pune and surrounded by ghat sections wherever I go. The fact which I believe is listen to your car. You will be the first one to know if the car is struggling to climb uphill with a/c on. If it climbs up easily don't continue to drive with a/c otherwise shut it off. My Ritz ascends easily on the ghat section with a/c on but i personally shut it off while going uphill. I have been driving cars from the good old days of premier padmini (With steering-column- mounted lever and floor gear, both a/c and non a/c versions) that lady use to get short of breath while going uphill with a/c.
I live in Pune and surrounded by ghat sections wherever I go. The fact which I believe is listen to your car. You will be the first one to know if the car is struggling to climb uphill with a/c on. If it climbs up easily don't continue to drive with a/c otherwise shut it off. My Ritz ascends easily on the ghat section with a/c on but i personally shut it off while going uphill. I have been driving cars from the good old days of premier padmini (With steering-column- mounted lever and floor gear, both a/c and non a/c versions) that lady use to get short of breath while going uphill with a/c.
Re: Climbing Up Hill with A/C On.
As a practical experience of a novice I got stucked up in Hyd roads at at 30 degree slop trying to mount when all of a sudden a crazy man crossed the road and had to apply brakes. Being a learner I had a horrible experience. I shifted my gear to 1st and tried to move the car but the car kept rolling down. I was really nervous and struggling to find out a way. With much effort nothing happened.
Called up my friend who was just 2 mins away from the point of incident and he came running.
What he did let me narrate here:-
First thing he put off the AC
Next he put his legs on the brake and cluth and slowly release the clutch
One point the car tried to move, he immediately started pumping slowly the accelerator.
Once it got some momentum he release the hand Brake and Walla we were up.
I do this everyday now and without any glitch.
He told me put off the AC while on slope else you would miss acceleration.
Please let me know if this approach is correct or not?
As a practical experience of a novice I got stucked up in Hyd roads at at 30 degree slop trying to mount when all of a sudden a crazy man crossed the road and had to apply brakes. Being a learner I had a horrible experience. I shifted my gear to 1st and tried to move the car but the car kept rolling down. I was really nervous and struggling to find out a way. With much effort nothing happened.
Called up my friend who was just 2 mins away from the point of incident and he came running.
What he did let me narrate here:-
First thing he put off the AC
Next he put his legs on the brake and cluth and slowly release the clutch
One point the car tried to move, he immediately started pumping slowly the accelerator.
Once it got some momentum he release the hand Brake and Walla we were up.
I do this everyday now and without any glitch.
He told me put off the AC while on slope else you would miss acceleration.
Please let me know if this approach is correct or not?
Re: Climbing Up Hill with A/C On.
Yea dude. AC helps prevent some load on engine and helpful to switch off. My driver also does same.
Yea dude. AC helps prevent some load on engine and helpful to switch off. My driver also does same.
Re: Climbing Up Hill with A/C On.
i don't know but in tata safari its automatic if ECU feel that load on engine is increasing then it simply turn off compressor . i think most of modern car has this please correct if i am wrong
i don't know but in tata safari its automatic if ECU feel that load on engine is increasing then it simply turn off compressor . i think most of modern car has this please correct if i am wrong
Re: Climbing Up Hill with A/C On.
Never happens in Ritz at least, have to manually power off the compressor.
Never happens in Ritz at least, have to manually power off the compressor.
Thread Starter
#53
![ilango[speed thirst]](/forums/data/avatars/m/0/80.jpg?1543402189){kind=avatar}
Re: Climbing Up Hill with A/C On.
All cars with ecm do this. this is worst stage of engine i hope. imo
All cars with ecm do this. this is worst stage of engine i hope. imo
Re: Climbing Up Hill with A/C On.
Actually i went there to ask them that my AC turn off if i drive car on mountain area specially suddenly i get good height road. Then tata mechanic he told me this, even showed me . Before i had no idea :P .
Actually i went there to ask them that my AC turn off if i drive car on mountain area specially suddenly i get good height road. Then tata mechanic he told me this, even showed me . Before i had no idea :P .
Re: Climbing Up Hill with A/C On.
modern cars switch of the compressor if engine rpms go over a certain threshold to prevent damage to the compressor. it even disengages it when engine rpm goes low
modern cars switch of the compressor if engine rpms go over a certain threshold to prevent damage to the compressor. it even disengages it when engine rpm goes low
![[;)]](https://www.theautomotiveindia.com/forums/images/smilies/Wink.gif "Wink [;)]")
only
i did not feel engine straining with AC on Up hill on Scorpio. but in Bolero i can feel the difference and the engine strains a little.
as for my 800 it was a 5 speed powerful than normal one (with vacum booster brakes.) the strain reduced a lot when i changed the AC gas to R134 (non-CFC).. it cost me 8000/- 3 years back. but it did the job the load was reduced.
now i have a K10 wagon r, and yes i do see strain with AC so i just switch it off and downshift to make it easier on the car
as for my 800 it was a 5 speed powerful than normal one (with vacum booster brakes.) the strain reduced a lot when i changed the AC gas to R134 (non-CFC).. it cost me 8000/- 3 years back. but it did the job the load was reduced.
now i have a K10 wagon r, and yes i do see strain with AC so i just switch it off and downshift to make it easier on the car
in my indica and wagon r i used to switch off the ac when climbing uphill and overtaking. but with my vento i rarely have switched off the ac to get more power. the strain on the engine if ac is switched on i feel is only negligible and is of no consequence on the life of the engine
@jayadev
AFAIK cars now-a-days do not have a thermostat like the room AC or the refrigerators. ( I do not know about High end cars, but cars like maruti zen, swift santro, esteem, accent, indica, indigo, honda city, manza, etc, dont have it.)
The temperature control knob only operates the hot air vent, so if we turn it clockwise or slide it towards the right, it opens the warm air inlet progressively. The AC compressor is still on till you turn it of manually.
Even in Auto AC/climate control, when we set the temperature for the cabin, the temperature is controlled by mixing warm air when the temperature in the cabin goes lower than the set temperature. But the compressor keeps running.
Cars now have only a high/low pressure cutout.
AFAIK cars now-a-days do not have a thermostat like the room AC or the refrigerators. ( I do not know about High end cars, but cars like maruti zen, swift santro, esteem, accent, indica, indigo, honda city, manza, etc, dont have it.)
The temperature control knob only operates the hot air vent, so if we turn it clockwise or slide it towards the right, it opens the warm air inlet progressively. The AC compressor is still on till you turn it of manually.
Even in Auto AC/climate control, when we set the temperature for the cabin, the temperature is controlled by mixing warm air when the temperature in the cabin goes lower than the set temperature. But the compressor keeps running.
Cars now have only a high/low pressure cutout.