Lexus Rx300 2003

[Syracuse]

I have problem with my car Lexus RX300 2003 and hope to find answers on thes forum.

Lexus RX300 1999-2003 Diagnostic in Advance Auto Parts show P0021 Camshaft Position Timing Sensor need to me replaced.

Also:

Misfire P0300,

P0304 CYLINDER 4, 5 AND 6

Symptoms: While driving in about 60 mph feels like transmission does not switch correctly it idle a little then shift like a punch. Never happens before.

If idling on tachometer show less then 1000 rpm and not stable car shaking, rpm move up and down.

Tried solutions:

Replaced Spark plugs;

Replaced Coils on 4, 5, 6

Replaced Camshaft Position Timing Sensor (bought from Pep Boys)

Nothing change!

Same symptoms!

I even removed sensor and start a car for minute and nothing changed.

Guess maybe Pep Boys sold me defective sensor or my problem not relay to all what I did.

lexus rx 300, camshafts, misfires, p0021, p0304,

Will appreciate help.

thank you

Edited February 12, 2012 by Syracuse