engine misfire at idle

Asked by Guru9TFHXM Mar 31, 2021 at 08:31 AM about the 1993 Toyota Camry LE

Question type: Maintenance & Repair

On my 93 Camry 4 banger, the engine has serious misfire at idle. In drive the
miss gets worse.  Move the tach from idle to 700 rpm the miss is gone. I can
still feel a misfire but very little.   As I drive I can feel the engine misfire.  I
disconnected the TPS and misfire is gone, nice smooth idle.   I have to
manually shift the tranny to accelerate.  I replaced the TPS and the misfire is
back.  I've inspected the spark plugs, ohmed the plug wires, replaced the
rotor, checked the cap and all is in good shape.  

1 Answer
21,360

Tony answered 3 years ago

Locate the EGR Valve and Regulator. Disconnect and plug the Vacuum Lines with the engine not running. Get back with results.

Mark helpful

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