Hi Members,My Altis Automatic gives a weired Knoking Sound on pickup with A/c & it doesnt occours without A/C.Please give Valuable Suggestions To solve this Problem.What you think there is problem in AiC or in Engine.Thankyou.
check spark plugs. seems like ignition issue.
knock sensor is probably out .........
Hello!yeah looks like.....!better take it to reliable TOYOTA 3S in your city.....!Thanxx
I think this problem occurs in engine