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: 22727
Experience:  BEng hons Mech engineering, in auto industry 22 years
Type Your Car Question Here...
Matt is online now

I have a four year old Vauxhall Astra with 40000 miles on the

Customer Question

I have a four year old Vauxhall Astra with 40000 miles on the clock. Since December I have noticed that in cold temperatures, I am sometimes getting a bit of clutch slip in first and second. I have only ever noticed the issue in the first mile of driving. When lifting the clutch I can feel a good biting point. I took the car into my Vauxhall dealership, and two different mechanics both said they could not detect such issue- the weather was warmer on this day. They did say that it shouldn't be a problem on such low mileage. I never ride the clutch and never have had such issue before so am really baffled.
Going on the forums, this seems to be a common issue with a large variety of car makes and models effected. I was hoping a qualified mechanic could give me a definitive answer on this as the forums come out with just about every response possible!
Submitted: 2 years ago.
Category: Car
Customer: replied 2 years ago.
So my question is, what potential causes can there be too this issue? I'm doubting its a clutch replacement issue as it feels fine at all other times. Its a 2.0 cdti manual 61 reg
Customer: replied 2 years ago.
Thank you :)
Expert:  Matt replied 2 years ago.
Hello I'd say that this sounds like the slave cylinder on the clutch is sticking a bitthe first thing to do is bleed the clutch hydraulics and ensure that you replenish the all fluid in the system and get any trapped air outI favour having a clear hose from the nipple to a jar 1/2 full of old fluid and with the nipple closed your assistant pushes the pedal up and down a few times, then holds it down whilst you then crack open the nipple and close it again whilst fluid is still flowing. If you still have issues with the hydraulics and its good after bleeding but then gets worse after a few days / hours, then I'd try leaving the clutch pedal held down overnight by bracing the pedal against the seat base with a piece of wood or similar, this is to try and force the seals inside the slave to take a set in the right orientation as over time they can shrink and dw air back in when you take your foot off the pedal. This shrinkage isn't enough to leak any fluid but the gap is big enough to draw air in (gas being harder to seal than fluid) if this doesn't work I'm sorry to say that the slave cylinder is going to need changing. also if the fluid is dark in colour this is a sign the seals are breaking up
Expert:  Matt replied 2 years ago.
Hido you still need help?Bear in mind that the site takes a deposit from you at the beginning and this is held by the site until you rate my answer at which point the cash is split between the site and the expert. I am only paid for my work on this question if you rate my answer, using the star system at the top of the screen. Please do not forget! Thank you