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


Reply
 
Thread Tools Search this Thread
Old 12th June 2009, 21:22   #1
BHPian
 
akhilesh51's Avatar
 
Join Date: Jan 2009
Location: Jaipur, RAJ
Posts: 628
Thanked: 321 Times
Default Engine losing power in Vista MJD

I came across this weird problem in my Vista MJD Anniversary edition when on a long drive sometime back.

When above 70 kmph, The car loses all power for few seconds. It is as if the gear has been shifted to neutral with no acceleration. The car gradually loses speed for few seconds before getting back to normal.

It happens intermittently but always above the speeds of 70 kmph. Once it happened 4 times in a trip of 120 kms, on return trip it did not happen at all and once again today, on the same trip it happened once.

This problem has left the service people scratching their head ( I actually didn't expect much from them either)... Anyone on this forum has experienced this problem ? Is their a solution to this ?
akhilesh51 is online now   Reply With Quote
Old 12th June 2009, 21:47   #2
BHPian
 
revhappy's Avatar
 
Join Date: Apr 2007
Location: Singapore
Posts: 307
Thanked: Once
Default

Was this happening with AC on? A wild guess; Could it be due to the AC thermostat cutting in and out?
revhappy is offline   Reply With Quote
Old 12th June 2009, 21:59   #3
Team-BHP Support
 
Zappo's Avatar
 
Join Date: Oct 2005
Location: Hyderabad
Posts: 5,650
Thanked: 2,010 Times
Default

Maybe I did not get this problem at all. How do you know that the engine is loosing power? Is it by looking at the speedo or is the difference perceptible enough for you? The confusion here is because of your statement
Quote:
It is as if the gear has been shifted to neutral with no acceleration.
What happens if you press accelerator at this time? Does the engine revvs freely like in neutral? Or is it that you do not feel that happen at all(as in free revving) even if you press the accelerator?

My suspicion is that it is an electrical/electronics problem. Your meter is probably creating an illusion for you.

Also, are you sure that your clutch is not heating up too much?
Zappo is offline   Reply With Quote
Old 12th June 2009, 22:03   #4
BHPian
 
dockap's Avatar
 
Join Date: Jun 2007
Location: Mangalore
Posts: 845
Thanked: 376 Times
Default

yes i have had the same problem 3 times when driving my wifes vista qjd and like you said it happens at 70 to 80 kph while accelarating problem seems to have disappeared after the 5k service

Last edited by dockap : 12th June 2009 at 22:04.
dockap is offline   Reply With Quote
Old 12th June 2009, 22:18   #5
BHPian
 
live2drive's Avatar
 
Join Date: Oct 2008
Location: New Delhi
Posts: 525
Thanked: 25 Times
Default

Adulterated fuel maybe?
live2drive is offline   Reply With Quote
Old 13th June 2009, 01:28   #6
Senior - BHPian
 
Join Date: Sep 2006
Location: zxc
Posts: 3,394
Thanked: 658 Times
Default

Quote:
Originally Posted by live2drive View Post
Adulterated fuel maybe?
Unlikely!!

What gear were you on.?
SirAlec is offline   Reply With Quote
Old 13th June 2009, 02:29   #7
BHPian
 
asethi's Avatar
 
Join Date: Jul 2007
Location: Bangalore
Posts: 374
Thanked: 40 Times
Default

Akhilesh I understand your problem. I too faced the similar problem in my Swift DDiS, but only when the AC was on. But after the service last week, the problem is no longer there.
asethi is offline   Reply With Quote
Old 13th June 2009, 11:55   #8
BHPian
 
akhilesh51's Avatar
 
Join Date: Jan 2009
Location: Jaipur, RAJ
Posts: 628
Thanked: 321 Times
Default

Quote:
Originally Posted by revhappy View Post
Was this happening with AC on? A wild guess; Could it be due to the AC thermostat cutting in and out?
AC was on all the time.

Quote:
Originally Posted by Zappo View Post
Maybe I did not get this problem at all. How do you know that the engine is loosing power? Is it by looking at the speedo or is the difference perceptible enough for you? The confusion here is because of your statement

What happens if you press accelerator at this time? Does the engine revvs freely like in neutral? Or is it that you do not feel that happen at all(as in free revving) even if you press the accelerator?

My suspicion is that it is an electrical/electronics problem. Your meter is probably creating an illusion for you.

Also, are you sure that your clutch is not heating up too much?
On speedo Car is losing Speed. Personally too, I feel that engine loses all rev power. If I further press the accelerator, Nothing happens, car continues to lose speed.

It is certainly not an illusion and I know it for sure because the speedo only problem happened in my Palio 1.6 Sport. Here, Car actually loses power and speed.

Quote:
Originally Posted by live2drive View Post
Adulterated fuel maybe?
Highly Unlikely. I fill up at my own fuel station


Quote:
Originally Posted by SirAlec View Post
What gear were you on.?
Fifth Gear
akhilesh51 is online now   Reply With Quote
Old 13th June 2009, 12:13   #9
Senior - BHPian
 
Join Date: May 2007
Location: Bangalore
Posts: 3,652
Thanked: 244 Times
Default

Hope you also noticed the temp indicator at that time, was it normal ??

If not for heating, this can happen for multiple reasons.

- Check for water in the sedimenter
- When was the last time you changed your fuel filter/ Air filter
- EGR valve sticky or faulty

If under warranty, ask them to change(FF/EGR/AF), if not clean (EGR/Sedimenter/AF)

PS: Forgot to ask, was it happenning from the beginning or came up later, if later, you might first want to reset your ECU.

Last edited by dadu : 13th June 2009 at 12:27.
dadu is offline   Reply With Quote
Old 13th June 2009, 15:15   #10
Senior - BHPian
 
Join Date: Sep 2006
Location: zxc
Posts: 3,394
Thanked: 658 Times
Default

dude! its overdrive. are you sure you are shifting at the right rpm.
SirAlec is offline   Reply With Quote
Old 13th June 2009, 15:38   #11
BHPian
 
Join Date: Feb 2009
Location: Kollam, Kerala
Posts: 368
Thanked: 2 Times
Default

Quote:
Originally Posted by SirAlec View Post
dude! its overdrive. are you sure you are shifting at the right rpm.
Yes, that is exactly what I was about to ask.
janitha is offline   Reply With Quote
Old 13th June 2009, 16:51   #12
BHPian
 
Join Date: Dec 2008
Location: Pune
Posts: 553
Thanked: 214 Times
Default

I think your problem is in turbocharger. This problem occured in swift lot of times now in Vista this is surfaced. This might be a problem with all fiat MJD engines.

Do you keep engine idle for 30 seconds after starting and before shutting? Because this is must do for Turbo charged engines, otherwise you may face problem in turbocharger.
sushantr5 is offline   Reply With Quote
Old 13th June 2009, 17:53   #13
Senior - BHPian
 
kpzen's Avatar
 
Join Date: Oct 2004
Location: Faridabad
Posts: 5,545
Thanked: 1,598 Times
Default

Quote:
Originally Posted by dockap View Post
yes i have had the same problem 3 times when driving my wifes vista qjd and like you said it happens at 70 to 80 kph while accelarating problem seems to have disappeared after the 5k service
Was the fuel filter changed during the service?
kpzen is offline   Reply With Quote
Old 13th June 2009, 18:02   #14
rkg
Senior - BHPian
 
Join Date: Apr 2005
Location: bangalore
Posts: 1,041
Thanked: 543 Times
Default

It happened in my vista few times. especially when the speedo was at 60 km and the car was in 4th gear. I felt as if car is not gaining any speed even after accelerator was fully engaged. after few seconds leave the accelerator and then press again car gains speed. there was no indicator light on panel. i did not observe temperature. next time it happens i will observe temp

no free revving sound was observed. it happened before third service.
rkg is offline   Reply With Quote
Old 13th June 2009, 18:49   #15
Senior - BHPian
 
greenhorn's Avatar
 
Join Date: Apr 2007
Location: TN-14
Posts: 6,837
Thanked: 1,315 Times
Default

question. Was the needle at the point where both the engine fan and the compressor fan both cut in ( big fan sound?) At that point, engine is slowed down, and if AC is on, severely.

Did the happen when the sun was up ( ie air is not cool)
greenhorn 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
2007 Indica Xeta: Engine losing power all of a sudden and regaining power after mins mohandas Technical Stuff 17 3rd May 2016 07:37
Honda Unicorn losing Engine Compression - HELP kkg Motorbikes 51 24th May 2015 12:17
ICE for Vista Limited Edition without losing boot space koushikvenkat In-Car Entertainment 12 15th January 2011 23:23
Indica Vista MJD vs Palio MJD vs Swift DDiS greenhorn The Indian Car Scene 452 24th April 2010 18:11
Wobbling and Losing Pickup after a accident-indica vista hdi_pro Technical Stuff 12 6th November 2009 18:12


All times are GMT +5.5. The time now is 15:30.

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