Team-BHP > Modifications & Accessories


Reply
  Search this Thread
4,393 views
Old 11th April 2011, 11:30   #1
BHPian
 
Join Date: Feb 2011
Location: Bangalore
Posts: 160
Thanked: 496 Times
Tata Vista TDi : Drop in power with cold engine + aircon

I am having a peculiar ac problem with my Vista Tdi.
When i am taking the car out for the first time in the day, and i switch on the ac when i have not driven for 5-6 kms, i feel the engine's pulling power to be greatly reduced, actually it's horrible especially in 2nd gear .
But, when i have done some 5-6 kms, and then when i switch on the ac, it behaves normal, although there's a very small feel of engine lag.

What could be the probable reason for this or what i am feeling is not correct?

Also, what is the correct way of driving with ac on because i assume, there will be a little bit of lag when the ac is on
turbo_delight is offline  
Old 11th April 2011, 13:09   #2
Distinguished - BHPian
 
dhanushs's Avatar
 
Join Date: Oct 2009
Location: Chennai
Posts: 4,268
Thanked: 9,805 Times
re: Tata Vista TDi : Drop in power with cold engine + aircon

The engine needs to be warmed up sufficiently before it churns out optimum performance.
dhanushs is offline  
Old 11th April 2011, 14:32   #3
BHPian
 
anoopash's Avatar
 
Join Date: Apr 2011
Location: Bangalore
Posts: 83
Thanked: 28 Times
re: Tata Vista TDi : Drop in power with cold engine + aircon

Do idle you car for a minute before driving it, especially early mornings
anoopash is offline  
Old 11th April 2011, 15:14   #4
Distinguished - BHPian
 
condor's Avatar
 
Join Date: Jun 2006
Location: Speed-brkr City
Posts: 15,845
Thanked: 15,964 Times
re: Tata Vista TDi : Drop in power with cold engine + aircon

@Turbo Delight, as has been said above: pls remember to idle the engine for about a minute before you start. Also avoid using the a/c immediately after starting, esp on a cold engine.

But one more question - was any other work done on your car recently ?
condor is online now  
Old 11th April 2011, 15:35   #5
Senior - BHPian
 
bluevolt's Avatar
 
Join Date: Jan 2011
Location: New Delhi
Posts: 3,274
Thanked: 3,474 Times
re: Tata Vista TDi : Drop in power with cold engine + aircon

You should switch on your car's AC only when Engine has sufficiently warmed up. This will cause less strain to the engine and will not cause drop in pick up. Follow as others have suggested and update with result.
bluevolt is offline  
Old 11th April 2011, 18:00   #6
BHPian
 
amit_purohit20's Avatar
 
Join Date: May 2006
Location: mumbai
Posts: 675
Thanked: 897 Times
Re: Tata Vista TDi : Drop in power with cold engine + aircon

I dont know whether this is related to your problem or not,but the Vista's 1 service/year policy is too stretched for Indian driving conditions. I have a Vista TDI and i dont drive my car much so it catches a lot of dust.My air filter was clogged because of heavy dust from nearby construction. I just cleaned the air filter and did a thorough service and everything is fine now and I am again getting the initial turbo response which I was missing.
Regarding your problem just check your ECU and other sensors,I hope they are doing the job properly.
amit_purohit20 is offline  
Old 14th April 2011, 11:42   #7
BHPian
 
Join Date: Feb 2011
Location: Bangalore
Posts: 160
Thanked: 496 Times
Re: Tata Vista TDi : Drop in power with cold engine + aircon

Thanks everyone for posting the replies. I know that a normal diesel engine does require 8-9 kms of running to reach it's optimum temperature and i do idle for a minute when the engine starts from cold.
But still i am getting this problem. And there was no work done on my car recently. So, i am not sure why i am having this problem.

But, is it that other diesel owners also experience this morning problem ?
If others are not facing, then this definitely is some problem with my car.
turbo_delight is offline  
Old 14th April 2011, 12:54   #8
Distinguished - BHPian
 
.anshuman's Avatar
 
Join Date: Dec 2004
Location: Good-Gaon
Posts: 7,763
Thanked: 11,063 Times
Re: Tata Vista TDi : Drop in power with cold engine + aircon

^^ Diesel engines take longer than Petrol engines to warm up. My Diesel cars take upto 5-6kms in winters to reach optimum operating temperature, while in summers the time taken a lot lesser.
.anshuman is offline  
Old 14th April 2011, 13:20   #9
Distinguished - BHPian
 
dhanushs's Avatar
 
Join Date: Oct 2009
Location: Chennai
Posts: 4,268
Thanked: 9,805 Times
Re: Tata Vista TDi : Drop in power with cold engine + aircon

Am I missing some thing here?.

Quote:
Originally Posted by turbo_delight View Post
I know that a normal diesel engine does require 8-9 kms of running to reach it's optimum temperature ....
If you do know this and do the same, then why do you complain when your car behaves as you mentioned below?.

Quote:
Originally Posted by turbo_delight View Post
... and i switch on the ac when i have not driven for 5-6 kms, i feel the engine's pulling power to be greatly reduced,....

...But, when i have done some 5-6 kms, and then when i switch on the ac, it behaves normal, although there's a very small feel of engine lag....
I think there is no problem.
dhanushs is offline  
Reply

Most Viewed
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Copyright ©2000 - 2024, Team-BHP.com
Proudly powered by E2E Networks