How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask Robert Your Own Question

Robert, UK Qualified Car Technician
Category: Car
Satisfied Customers: 4340
Experience:  Fully qualified / self employed garage technician in the UK
Type Your Car Question Here...
Robert is online now

I have 2007 grand vitara 1.9 ddis, it has a serious screaming

Customer Question

I have 2007 grand vitara 1.9 ddis, it has a serious screaming noise when accelerating! Any ideas?
Submitted: 2 years ago.
Category: Car
Expert:  Robert replied 2 years ago.



Hopefully i can help..


Going by your description - If the noise emiting from the Turbo housing - it posible the vane shaft has play in it..causing an inbalance from the turbo hence the screaming noise causing the vanes to touch the compressor housing - you need to remove the the intake pipe that leads to the turbo and feel for any excess play movement in the shaft inside the turbo and too it possible check for damage the vanes incase anything was ingested..also ensure the actuator is still able to move on the turbo and hanst jammed or stuck - you should be able to see it move when the engines revved up "vac tube refitted" the actuator will be the part you remove the vac tube from..check the tube isnt damage either or split..i do hope this helps

Customer: replied 2 years ago.

Is it detrimental to the engine to keep running the vehicle?

Expert:  Robert replied 2 years ago.

Hi..there thanks for your reply..


In a way yes - the turbo essentially creates added boost,power and performance "that kick you get when it increase rpm" on the engine - if the turbo becomes faulty then you wont get that or very little power to be honest/load of smoke out the back in some cases..Its something to certainly have checked out than let it get worse - which means an inspection of what i mentioned above especailly so any foreign objects that may of been sucked in by the turbo or damage vanes/play in the shaft inside the turbo causing the vanes to contact the compressor housing hence the scream..

if thats where you hear the noise coming from..and isnt coming from any other part of the engine ie:- belt noise,engine pulley noise or any loose,split intake hoses,from vacuum control system..maybe have a listen again with everything back connected up and carefully listen to the turbo housing/centre core..if its coming from that and you've confirmed again - then you'll know whats needs to be done next to further confirm by checking above before possible replacement..also too check your oil level as the turbo does rely heavily on good supply of if the turbo when removed has been found to be starved of oil then further investigations need to be made to the oil supply and return side ans well as oil pressure..but usually with any turbo replacement those feed and return lines should be replaced..I do hope this helps further

What Customers are Saying:

  • 9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much. Phil
< Previous | Next >
  • 9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much. Phil
  • Lurch. Thank you very much. I had real doubts about this website but your promptness of response, quick followup and to the point answer with picture was incredible. Charles
  • As a single woman, I really appreciate an excellent and affordable opinion.
    Thank you Geordie, I will not hesitate to contact justanswer in the future!
  • Another great insight to what may be the problem. I will have my mechanic take a look at it tomorrow. Thanks again, do indeed know your stuff. Jim
  • I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry. Stephanie P
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C.
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex

Meet The Experts:

  • Greg



    Satisfied Customers:

    Automotive diagnostic tech
< Last | Next >
  • Greg's Avatar



    Satisfied Customers:

    Automotive diagnostic tech
  • Matt's Avatar


    Mechanical Engineer

    Satisfied Customers:

    BEng hons Mech engineering, in auto industry 22 years
  • Ross's Avatar


    Diagnostic and repair technician

    Satisfied Customers:

    Licensed diagnostic and repair technician
  • Rob's Avatar


    ASE Certified Technician

    Satisfied Customers:

    30 years trade experience
  • uk_iaibal's Avatar


    UK Car Mechanic

    Satisfied Customers:

    Verified Car Mechanic.
  • Billy's Avatar


    Trainer/ Master Technician

    Satisfied Customers:

    Trainer 8+ years, master tech. 10+ years, SAE member
  • Mike Kelly's Avatar

    Mike Kelly

    Auto Service Technician

    Satisfied Customers:

    17 years experience as an auto mechanic, foreign and domestic. 5 years running my own repair business.