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Hi lexus gs300 2001 ramdom misfire p0300 p0305 p0306 I have been getting these codes and have changed Plugs Coils Injectors and all 4 O2 sensors the car was converted to LPG by last owner I have removed the lpg as I felt it was of pure quality. ... The car has also been De catted... with spacers fitted to both no. 2 sensors I would greatly appreciate any help Kindest Regards Keith
No I have not yet received any response to my question. ..
I would appreciate it if you keep searching. ..
Thanks for your reply
Compression test has not yet been performed as I feel the car pulls to good... runs fine.. in fact there or no symptoms... driving just can't keep check engine light off...
Sometimes I car drive the car for 115 miles before the light comes on
other times its on after 30 miles
O the car is automatic with new ATF fuild (millers)
Timing belt done 30.000 miles ago.. by last owner so I'm unsure what has been replaced
possible just belt
Hope this information helps