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, Renault Technician
Category: Renault
Satisfied Customers: 4840
Experience:  Fully qualified 19+yrs exp/self employed technician in the UK
Type Your Renault Question Here...
Robert is online now

My clio judders on start up every morning but runs well when

This answer was rated:

my clio judders on start up every morning but runs well when warmed up,why?


What engine do you have?

What year is the car?

Any management lights on when this occurs?

other than sparkplugs..anything else checked or replaced?

Customer: replied 2 years ago.
1598 petrol. 1999 reg. no management lights. nothing else checked except noticing excessive vapour (steam) from exhaust


If its seems to run fine when warmed say your best advice would be to find someone with a decent scanner with live data capability or scope to check Oxygen/Lambda sensor performance,heater side of it..sounds like to me a bad pre cat lambda sensor..but best to have them tested first ideally..I do hope this helps

Robert and other Renault Specialists are ready to help you