InstantForum.NET v4.1.4Car Fault Trouble-shooting Forumhttp://forum.usedcarexpert.co.uk/action@usedcarexpert.co.ukThu, 17 May 2012 01:17:03 GMT20http://forum.usedcarexpert.co.uk/Topic1010-10-1.aspxI forgot to add, check the exhaust flap - see my answer to the question in this section "Exhaust boom when I accelerate" - could be your problem as well.</P><P>TimMon, 09 Aug 2010 10:38:15 GMTUsed Car Expert Technical Editorhttp://forum.usedcarexpert.co.uk/Topic1010-10-1.aspxHi</P><P>These could be related, and the cure may be just a bit of mechanical TLC. If it's a while since you had it serviced, go it a good going over - oil &amp; filter, air filter and either clean &amp; re-gap the plugs or renew them. A dose of fuel system cleaner or a couple of tankfuls of BP ultimate or Shell V power will do it a world of good as well. On the other hand, if all your servicng is bang up to date, check the coolant temp sensor and/or the idle speed control. The latter can get a bit gummed up and ne slow to respond; carburettor cleaner is good for cleaning it.</P><P>Hope that helps</P><P>Tim Mon, 09 Aug 2010 10:33:45 GMTUsed Car Expert Technical Editor