jmb15 Posted August 21, 2015 Share Posted August 21, 2015 Wife's 07 rx350 has a rough idle on start up but is ok after its warmed up; not sure of what could be the cause. Also the radio shuts of randomly or is inoperable in some cases. Not sure how to diagnose it if anyone can help it would be appreciated Quote Link to comment Share on other sites More sharing options...
jetfixer01 Posted August 22, 2015 Share Posted August 22, 2015 If you don't have or have access to an ODBII tester, try unplugging the MAF sensor and see if the rough idle goes away. If it does, try cleaning the MAF sensor. Use ONLY MAF sensor cleaner and do not touch the very thin wires running through it. Let the spray cleaner dry before you start the engine. If cleaning does no good, then you probably have a failed MAF sensor. Confirm this with an ODBII scanner before you spend the money on a new one. Quote Link to comment Share on other sites More sharing options...
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