Engine losing power in Vista MJD

akhilesh51 · 12th June 2009, 21:22

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 ?

revhappy · 12th June 2009, 21:47

Was this happening with AC on? A wild guess; Could it be due to the AC thermostat cutting in and out?

Zappo · 12th June 2009, 21:59

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?

dockap · 12th June 2009, 22:03

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

live2drive · 12th June 2009, 22:18

Adulterated fuel maybe?

SirAlec · 13th June 2009, 01:28

Quote:

Originally Posted by live2drive

Adulterated fuel maybe?

Unlikely!!

What gear were you on.?

asethi · 13th June 2009, 02:29

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.

akhilesh51 · 13th June 2009, 11:55

Quote:

Originally Posted by revhappy

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

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

Adulterated fuel maybe?

Highly Unlikely. I fill up at my own fuel station

Quote:

Originally Posted by SirAlec

What gear were you on.?

Fifth Gear

dadu · 13th June 2009, 12:13

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.

SirAlec · 13th June 2009, 15:15

dude! its overdrive. are you sure you are shifting at the right rpm.

janitha · 13th June 2009, 15:38

Quote:

Originally Posted by SirAlec

dude! its overdrive. are you sure you are shifting at the right rpm.

Yes, that is exactly what I was about to ask.

sushantr5 · 13th June 2009, 16:51

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.

kpzen · 13th June 2009, 17:53

Quote:

Originally Posted by dockap

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?

rkg · 13th June 2009, 18:02

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.

greenhorn · 13th June 2009, 18:49

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)

12th June 2009, 21:22	#1
akhilesh51 BHPian Join Date: Jan 2009 Location: Jaipur, RAJ Posts: 631 Thanked: 339 Times	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 ?
	() Thanks

12th June 2009, 21:47	#2
revhappy BHPian Join Date: Apr 2007 Location: Singapore Posts: 330 Thanked: 15 Times	Was this happening with AC on? A wild guess; Could it be due to the AC thermostat cutting in and out?
	() Thanks

12th June 2009, 22:03	#4
dockap BHPian Join Date: Jun 2007 Location: Mangalore Posts: 868 Thanked: 478 Times View My Garage	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.
	() Thanks

12th June 2009, 22:18	#5
live2drive BHPian Join Date: Oct 2008 Location: New Delhi Posts: 525 Thanked: 27 Times View My Garage	Adulterated fuel maybe?
	() Thanks

13th June 2009, 02:29	#7
asethi BHPian Join Date: Jul 2007 Location: Bangalore Posts: 449 Thanked: 219 Times View My Garage	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.
	() Thanks

13th June 2009, 12:13	#9
dadu Senior - BHPian Join Date: May 2007 Location: Bangalore Posts: 3,803 Thanked: 462 Times View My Garage	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.
	() Thanks

13th June 2009, 15:15	#10
SirAlec Senior - BHPian Join Date: Sep 2006 Location: zxc Posts: 3,393 Thanked: 726 Times	dude! its overdrive. are you sure you are shifting at the right rpm.
	() Thanks

13th June 2009, 16:51	#12
sushantr5 BHPian Join Date: Dec 2008 Location: Nuremberg Posts: 670 Thanked: 582 Times View My Garage	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.
	() Thanks

13th June 2009, 18:02	#14
rkg Senior - BHPian Join Date: Apr 2005 Location: bangalore Posts: 1,044 Thanked: 594 Times	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.
	() Thanks

13th June 2009, 18:49	#15
greenhorn Senior - BHPian Join Date: Apr 2007 Location: KL-01 Posts: 7,744 Thanked: 4,387 Times View My Garage	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)
	() Thanks

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