300 codes make sense and you have issues. It could also be two separate issues were damaged wiring on the knock sensors and then a damaged catalytic converter. I've got a car that constantly throws up
Question about Pontiac Grand Am
...300, PO 105, PO106, PO 110,PO 115& PO 120 CODES Mean on a Toyota Camry 2000 model sedan car? PO 128 AND PO 420 what engine, what size. that is first question. misfire, map ,maf, iat, ect,tps and ...
...Engine code Torque output From 300 N·m (30.6 kg·m, 221.1 ft·lb) at 2,400 rpm to 420 N·m (42.8 kg·m, 309.5 ft·lb) at 4,000 rpm Firing order Dimensions (L x H x W): Dimensions (L x H x W): 8 more ...
code PO307 which is cylender #7 is misfireing. so i replace all the spark plugs and coil pk on cylender #7 and now it shows PO 300 which is random misfireing. before all this the car was running great
...code # 300 & 420. also, manifold tuning valve (MTV) solenoid makes thicking noise when key on & off. if cat is the problem, it's cover by warranty? now 99k miles.... thanks P0300 1.ignition ...
...300 is multiple cylinder misfire, 420 is catilytic convertor no good and 446 is an evap problem P0300="random/multiple misfire detected" P0420=catalyst efficiency below threshold (bank 1) ...
...300 M special edition and also wouldn't start at times for up to 30-45 minutes at a time, and then would all of a sudden start. I used a diagnostic computer to bring up the codes and they came up ...
...PO 300 and PO 420 po300 is a random misfire code(could be egr passages blocked under upper pleinum;plug wires;plugs or coils.PO420 is catalatic converter below threshold(converter has to be
...code was p 420 (catalist)so i took it to the other chevy dealer in las vegas (Bill Heard went out of business)wen i showed the service writer the letter from the company he semmed to act suprised as ...
...300 M special edition. My check engine light came on and i borrowed a friends diagnostic computer to find out the problem. When we did the test a bunch of different codes came up including PO 325 420 ...
2,566 questions posted
Usually answered in minutes!
1,538 Questions
1,504 Questions
1,435 Questions
1,208 Questions
1,285 Questions
