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


Reply
 
Thread Tools Search this Thread
Old 30th January 2012, 23:18   #1
BHPian
 
NOTORIOUS's Avatar
 
Join Date: Mar 2007
Location: Delhi
Posts: 783
Thanked: 87 Times
Default Verna Feels Heavy and Rough After Turbo Replacement

Hello Guys

it was second week of december 2011 , i was getting ready for my routine service of my verna crdi. bought 5.5 lts of mobil 1 delvac Mx for my baby.

Service Adviser told me that my turbo has whistling noise and it should be checked. after 3 hours they told me that my turbo is dying and i have to replace that.

as it was under warrenty , i gave them green signal , new turbo was ordered and it took close to 6 days for turbo to arrive at hass. i must tell you that i observed a visible change in driving characterstics of m car. the car was very smooth and was like a jet after 2k rpm.

turbo came and it was duly replaced on same day , i collected my car @ 7 PM and car was like Tight (hope you understand that).

Horror starts after two hours when suddenly there was sounds like air pressure leak , khat khat sound and lots and lots of white smoke.After some calls i was sure that turbo was blown .

Service advisor is known and was kind enough to send a mech at place i was. car was driven to hass with intercooler disconnected and speed below 20kmph. next morning team of seniors checked the car and it was sure thet turbo was seized with broken fins (Pics attached).

Engine oil was spread all over the exaust and oil cooler. after some discussion , they (hass people) decided to replae the turbo again. i was provided wwith Elantra Gls As Courtsy car as the repairs are done under warrenty and t took more then 10 days due to christmas and new year holidays. after turbo replacement , they also changed actuator as they have doubt about that.

Now i am driving that car from last one month , the smoothness and rocket like feel is gone . rocket like feel is there after 2k rpm but only 60 to 70% as compared to earlier. Car feels like very heavy and rough to drive but hass people say its okay. i dont know that roughness is due to turbo change or what and also there is slight increase in overall nvh levels of car it feels like vibration is increase in car during ideling ???

Please note that i have also upgraded my tyres to 195/60/15 michlin primacy lc which has made my steering a bit heavier.and engine oil was refilled at hass with shell helix (i Think)


Please pour in your suggessions

Regards

Jas
Attached Thumbnails
Verna Feels Heavy and Rough After Turbo Replacement-image02091.jpg  

Verna Feels Heavy and Rough After Turbo Replacement-image02101.jpg  


Last edited by NOTORIOUS : 30th January 2012 at 23:20.
NOTORIOUS is offline   Reply With Quote
Old 31st January 2012, 07:50   #2
Senior - BHPian
 
deehunk's Avatar
 
Join Date: Nov 2009
Location: Bangalore
Posts: 1,048
Thanked: 767 Times
Default Re: Verna Feels Heavy and Rough Aftter Turbo Replacemet

From the photo I understand it is a Honeywell VNT, the blades of the turbine wheel is damaged. Just confirm with HSS what replacement turbo they have used second time.
deehunk is offline   Reply With Quote
Old 31st January 2012, 10:18   #3
BHPian
 
NOTORIOUS's Avatar
 
Join Date: Mar 2007
Location: Delhi
Posts: 783
Thanked: 87 Times
Default Re: Verna Feels Heavy and Rough Aftter Turbo Replacemet

They have used The same Honeywell Turbo Again.
NOTORIOUS is offline   Reply With Quote
Old 1st February 2012, 18:51   #4
BHPian
 
NOTORIOUS's Avatar
 
Join Date: Mar 2007
Location: Delhi
Posts: 783
Thanked: 87 Times
Default Re: Verna Feels Heavy and Rough After Turbo Replacement

any input guys ??? i will really appriciate .
NOTORIOUS is offline   Reply With Quote
Old 1st February 2012, 19:42   #5
BHPian
 
Join Date: Apr 2010
Location: Currently, New Delhi
Posts: 423
Thanked: 92 Times
Default Re: Verna Feels Heavy and Rough After Turbo Replacement

Quote:
Originally Posted by NOTORIOUS View Post
any input guys ??? i will really appriciate .
Did a ECU reset yet??

Last edited by JustCause : 1st February 2012 at 19:43.
JustCause is offline   Reply With Quote
Old 1st February 2012, 19:49   #6
Distinguished - BHPian
 
phamilyman's Avatar
 
Join Date: Jul 2007
Location: Gurgaon
Posts: 5,601
Thanked: 3,452 Times
Default Re: Verna Feels Heavy and Rough After Turbo Replacement

Couple of things:
a. Check turbo at outside workshop. Heaviness = turbo problem. See if its leaking oil or such
b. Outside shot but maybe the EGR valve may need cleaning, though that should ideally have been sorted out by HASS if that was the case.

Edit; cause saab, ECU reset does little in this case imho

Last edited by phamilyman : 1st February 2012 at 19:50.
phamilyman is offline   Reply With Quote
Old 1st February 2012, 19:52   #7
Distinguished - BHPian
 
dhanushs's Avatar
 
Join Date: Oct 2009
Location: Bathery/BLR
Posts: 3,446
Thanked: 4,055 Times
Default Re: Verna Feels Heavy and Rough After Turbo Replacement

Quote:
Originally Posted by NOTORIOUS View Post
any input guys ??? i will really appriciate .
Are there any hissing sound? Improper turbo plumbing and leaks can lead to power loss. Please check if the plumbing is done properly once again.

Also, plugin and OBD and check the boost (I guess one can do that in a Verna) and the status of the sensors and any error codes.

Finally, clean the intake manifold and reset the ECU.
dhanushs is offline   Reply With Quote
Old 2nd February 2012, 21:59   #8
BHPian
 
NOTORIOUS's Avatar
 
Join Date: Mar 2007
Location: Delhi
Posts: 783
Thanked: 87 Times
Default Re: Verna Feels Heavy and Rough After Turbo Replacement

Quote:
Originally Posted by JustCause View Post
Did a ECU reset yet??
Yup !!!

Quote:
Originally Posted by phamilyman View Post
Couple of things:
a. Check turbo at outside workshop. Heaviness = turbo problem. See if its leaking oil or such
b. Outside shot but maybe the EGR valve may need cleaning, though that should ideally have been sorted out by HASS if that was the case.

Edit; cause saab, ECU reset does little in this case imho
No Leaking Of Oil + EGR is cleaned.

Quote:
Originally Posted by dhanushs View Post
Are there any hissing sound? Improper turbo plumbing and leaks can lead to power loss. Please check if the plumbing is done properly once again.

Also, plugin and OBD and check the boost (I guess one can do that in a Verna) and the status of the sensors and any error codes.

Finally, clean the intake manifold and reset the ECU.

Intake Manifold is cleaned and there is no error via OBD
NOTORIOUS is offline   Reply With Quote
Old 2nd February 2012, 22:10   #9
Senior - BHPian
 
sagarpadaki's Avatar
 
Join Date: May 2010
Location: Bengaluru
Posts: 2,632
Thanked: 1,257 Times
Default Re: Verna Feels Heavy and Rough After Turbo Replacement

Ask the technician to take back to back drives in your car and another verna. Be with him during both the drives and let him compare.Just make sure you make him drive a good verna and then your verna.Let the drive be long, preferably highway
sagarpadaki is offline   Reply With Quote
Old 2nd February 2012, 22:29   #10
BANNED
 
Join Date: Dec 2011
Location: Chennai
Posts: 818
Thanked: 1,647 Times
Default Re: Verna Feels Heavy and Rough After Turbo Replacement

The reason that you find inadequate performance is that the new turbo would be "tight" as you have rightly assessed and has to be broken in. Once you have driven about 1500 - 2000 kms you will find a gradual improvement in the performance of the turbo. A new turbo like a new engine has to "break-in" for it to give its full performance.

Earlier, your car had good performance because the turbo had the right amount of play / slop in the bearings and this will happen once you have done a certain amount of driving in the new car. The first replacement went soon because it didnt have the required "tightness" in the beginning and went down fast because of that.

Please take all the precautions while running in the new turbo (be careful in the mornings while starting and do not go very fast for first 500 - 1000 kms} so that your engine gets back to its original shape properly.

Hope this helps
VeyronSuperSprt is offline   (1) Thanks Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Mark Webber alright after a heavy crash at WEC Sao Paulo zenren Int'l Motorsport 0 1st December 2014 21:28
Rough and erratic idling after service sans33 Technical Stuff 1 24th January 2008 14:04
heavy discounts on santro after launch of swift .anshuman The Indian Car Scene 67 7th June 2005 16:28


All times are GMT +5.5. The time now is 00:20.

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