evinX Posted September 9, 2019 Share Posted September 9, 2019 (edited) Getting some knocking/ thudding sound when i turn the car on. When its warm and at idle its fine. Any ideas? 2JZ-GE auto, has a new fuel pump...ecu...sometimes it laggy at 30mphs...but no knocks. Timing is fine as the water pump was recently done. New igniter...dizzy cap and arm. All tuned nicely. Tps and icv are good [video=youtube;GizCmGXC9-c]https://www.youtube.com/watch?v=GizCmGXC9-c&feature=youtu.be Edited September 9, 2019 by evinX (see edit history) Quote Link to comment Share on other sites More sharing options...
rider Posted September 9, 2019 Share Posted September 9, 2019 I had a knock on start up issue on an auto car that was tracked down to the cooling fan would brush the transmission oil cooling pipes for a minute or so after startup, then it'd go. I bent one, the oil return pipe at the bottom of the radiator down a little and that solved my problem. Quote Link to comment Share on other sites More sharing options...
evinX Posted September 9, 2019 Author Share Posted September 9, 2019 I had a knock on start up issue on an auto car that was tracked down to the cooling fan would brush the transmission oil cooling pipes for a minute or so after startup, then it'd go. I bent one, the oil return pipe at the bottom of the radiator down a little and that solved my problem. Nah mine are clear, the lower curved rad shroud was loose but still has a slight thud enough to vibate the car Quote Link to comment Share on other sites More sharing options...
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