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 Matt Your Own Question

Matt, Mechanical Engineer
Category: Car
Satisfied Customers: 20385
Experience:  BEng hons Mech engineering, in auto industry 22 years
Type Your Car Question Here...
Matt is online now

I have a 2006 VW Golf Plus. It suddenly started

Resolved Question:

I have a 2006 VW Golf Plus. It suddenly started "losing power" when I need to make it up a hill or accelerate to overtake, revving up to 3000 rpm before changing gear, when I tried to accelerate. With the accelerator pushed down to the floor it was like it had no power to speed up.
I have taken the car to an automatic gear box specialist who scanned for fault codes and found fault codes for Glow Plugs 3 and 4 and the Boost Pressure Sensor. He subsequently cleared the codes, fitted 4 new Glow Plugs and a new MAP Sensor, and said it was then ok at the time of road testing.
The situation is now worse as the car revs us to 4000 rpm before changing gear.
I have spoken to my brother-in-law who has said it could also be :-
A. Low gear box oil?
B. Clogged filter maybe full of particles?
C. Could need a Filter and oil change?
D. Automatic transmission fluid?
I just need to get this sorted and don't want to spend another huge amount of money for no results.
Any advice you could give me would be very much appreciated.
Submitted: 1 year ago.
Category: Car
Expert:  Matt replied 1 year ago.
Hello I'd agree that the next thing to do is check the fluid level in the gearbox, as if low or if it dirty this will lower the oil pressure inside the box and slow down shifts and generally make the gearbox sluggishif just afluid change doesn't help then the next step is to remove the sump pan, clean out the filter screens and then replenish the fluid
Customer: replied 1 year ago.
Hey Matt,,
Thanks very much for this. It's good to get an informed second opinion. Very much appreciated!
I don't suppose you have any idea how many "man hours" both of these two jobs would take? I realise that may be a ridiculous question, but I want to go into this next phase of work on the car with as much information as possible!
Am also wondering whether to go back to the gent who did the first tests or whether to head straight to the VW dealer. Will have to think on that one. Someone said they charge exorbitantly, but I want the job done really well and sorted.
Thanks Matt!
Expert:  Matt replied 1 year ago.
Hello to drain and refresh the fluid is about an hours labour Plus the cost of the fluid (£30 or so)if the sump pan has to come off then allows for 3 hours for the complete joband dealers labour rate will be about twice that of your small independent garage so about £90-100 / hour for the dealer?I woudl suggest the best option is to find a VW independent specialist in your area as this usually means you get good service and dealer know how at a much better labour rate
Customer: replied 1 year ago.
Thanks VERY much once again Matt!
I've followed your advice and done a search for an independent garage as you suggested. I've found one which is a member of the RMI (Retail Motor Industry Federation) and the Trust My Garage scheme, so I will contact them tomorrow and hopefully they can help.
Is there anything else you think I should ask the guys when I contact them tomorrow? Don't know if there are any other "intelligent" points I should make to them or questions I should ask?
Can't tell you how much I appreciate all of your advice! You've helped me find a way forward!!
Will wait for this last response and then give you a TOP rating!
Thanks again!!
Expert:  Matt replied 1 year ago.
Hello Sam glad to have helpedthe only other possible cause is an air leak after the MAF (mass airflow) meter on the engine as this is used to measure engine load and so controls the gearshifts and how the car drives , especially at low engine speeds The best way to locate a leak is to have the engine running and warm and then spray lighter gas/propane around each joint in turn. If the engine rev's up you've found yourleak.Now you might think that spraying lighter gas around a hot engine isn’t wise, however the flash /ignition point of gas is about 400°C so you need a naked flame or spark to set it off and I’ve used this method for many years without incident.Work your way through each possible joint one at a time and you should find it. I use a slightly flattened piece of brake pipe and some rubber hose from the can of lighter gas to provide a spraying 'wand' and allow a direct blast of gas into each area, especially those difficult to reach with large implements.
Matt, Mechanical Engineer
Category: Car
Satisfied Customers: 20385
Experience: BEng hons Mech engineering, in auto industry 22 years
Matt and other Car Specialists are ready to help you

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.