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Q: Report: Check Engine Light Due to Defective VVT-i Controller on 2006 Scion xA

Check Engine Light Due to Defective VVT-i Controller: Light is intermitant. I had this issue fixed/part replaced when under warranty under 60K miles on my 2006 Scion XA. I recently had to replace an engine with a 16K mile engine from another Scion XA at 93K and now the problem is back. Would the new engine replacement cause the VVT-i to malfunction? My mechanic said the synthetic oil he put in might solve the issue. (I had used synthetic oil for the past 2 years previously until I went to this mechanic this past summer.) I also had the clutch replaced at the same time as the engine and it's been a bit noisier in 1st and 2nd gear. ???
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I have seen VVT problems on engines where the oil was not changed frequently enough. Does your mechanic have access to Scion workshop manuals to get test procedures? There is a company that independent auto repair shops get their information from, this same information is available inexpensively for people that work on their own cars.. The information is year make and model specific, covering repair procedures, torque specifications, fluid capacities and specifications, service bulletins, component locations, wiring diagrams ect.... Alldata is very easy to navigate
You can get a one model subscription cheap. There is a professional service called Identafix. They only deal with professional repair shops. They are in the Minnesota 651-633-8007 begin_of_the_skype_highlighting 651-633-8007 end_of_the_skype_highlighting. Your auto repair shop do all their diagnosis tests, and discuss your problem with a team of professional technicians great service cheap and very bright people. If the repair shop that are repairing your car are stumped this is a great service. This company only deal with automotive repair shops and don't answer questions for the general public but are an amazing knowledge base.
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