Question about 2001 Lexus RX 300

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99 rx 300 run like ****

Had codes for front cylinders misfire and vvt code cleared codes road test to see what was going on it drove 25mph the ck engine light came back on codes for rear cylinders misfire and code p0172 put plugs in it idles better but bank 2 long term fuel is -30% can u help

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Possible bad mass air flow sensor causing rich fuel trim, vvt cam gear also possible issue.

Posted on Aug 11, 2009

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Have an exhaust shop check it - you probably have a worn out cat converter and or bad O2 sensor(s).

Posted on Aug 07, 2009

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I have check engine code P1354 variable valve timing system bank 2 for my 2000 Lexus RX300. Where is this located?


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I have a 2000 RX300 that all of a sudden started throwing codes P0300, P0305 and P0306 and at the same time the transmision would not shift into high gear. I know what the codes mean but can cylinder...


It can if the misfire is bad enough. 300 tells you that you have a random misfire, 305 tells you misfire on cylinder 5, and 306 misfire on cylinder 6. Correct these and your vehicle should improve, however I would check the codes once again after this issue is corrected to determine if another DTC code was missed.

Mar 09, 2011 | 2000 Lexus RX 300

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Codes:p1346/p1349/p1354/p0446/p0300/p0301/p0303/p0305/p0307/ p0430/car runs rough when idling/lexus gs 400 1998


P0301 Cylinder No. 1 Misfire Detected
P0302 Cylinder No. 2 Misfire Detected
P0303 Cylinder No. 3 Misfire Detected
P0304 Cylinder No. 4 Misfire Detected
P0305 Cylinder No. 5 Misfire Detected
P0306 Cylinder No. 6 Misfire Detected
P1346 Variable Valve Timing (VVT) Circuit Range/Performance Fault
P1349 Variable Valve Timing (VVT) System Malfunction
P0330 Knock Sensor
P0446 EVAP Vent Control Fault
P0430 Catalyst System

Stop driving immediately.....

You defiantly skipped on your timing........

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It is an igniter code for one cylinder. Most cars are cylinder 4 but it depends on the engine size. Check each plug wire and see if one is misfiring or not firing. Then you should be able to trace it back to the source.

Sep 29, 2010 | 1999 Lexus RX 300

1 Answer

I have a 2001 Lexus rx 300 with a check engine light on with code P0301 cylinder 1 misfire. The spark plugs and ignition coils were already replaced. I swapped fuel injectors with known good cylinder and...


The minimum compression required is 95 psi, below this there is no good combustion, incusive the spark plug gets wet in gasoline
If this condition exists, you should check the piston rings and cylinder surface

May 20, 2017 | 2000 Lexus RX 300

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p0300 is a random misfire code whitch means you need to check spark plugs, wires/coils, or injectors fire misfire concerns.

Jun 24, 2009 | 2001 Lexus RX 300

1 Answer

Car passes emmission test but fails due to codes in computer


ok code 0300 is a random multiple cylinder misfire. probably ignition related is my guess. i would check the coil pack and ignition module and go from there.

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Cylinders misfire for 99 lexus ES300


no, this is a fuel quality poor or water momentany, make this test: disconnect the negative battery terminal few minutes and reconnect,run the engine, drive and check









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Mar 14, 2009 | 1999 Lexus ES 300

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