Quote:
Originally Posted by ShaunKaz
Hi All heres an update I purchased a vacuum tester and tested the vacuum system.. Ive checked all the pipes and there ok ive even tested the vacumm with engine running but I did notice one thing.. when I checked the vacuum for the turbo control valve (TCV) there was nothing(with engine off).. the pipe which connects to the TCV I disconnected and whilst enging is running there is plenty of vacuum and the guage holds steady.. but when the TCV is connected i connect the tester to the output side of TCV its very, very erratic. So I can only assume there is something wrong with the TCV.. what would you say?
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The Turbo control valve works by opening and closing at very high speed maybe 100 times a second so the output vacuum will be a bit unstable on a gauge . Its much more stable when connected up to the turbo wastegate chamber