michcar1

NEED HELP FAST / while driving home last week....CEL came on....then loss compression on the engine....slow down then go to about 40-45MPH no more...made it home since i lived about 5miles from work. i then went to AUTO ZONE TO HAVE THE CODES CHECK RESULTS ARE AS FOLLOWS.....P0300/P00304/P0306/P0302/ VVT SYS MALFUNCTION/BANK (2) RANDOM CYLINDER MISFIRE.

CHANGE OUT THE SPARKS PLUGS TO (OEM) DENSO IMPROVEMENT BY 70%..I HAD IN( BOSCH SPARK PLUGS NO GOOD)

what else should i do...ANY suggestions any Help.....

THANKS IN ADVANCE

hypervish

After replacing the spark plugs to Denso, did you reset the ECU? If so, did the CEL come back on? What codes this time?

michcar1

i did not reset the ECU.....will do and report back very soon

michcar1

the last codes i have are P1354 / P0300.......after changing out the spark plugs

michcar1

And also i have 216,000 ODO

salimshah

When you say "lost compression" what do you mean? You lost power, I assume. When you dont get combustion in a chamber, that should be expected.

If you follow CL recommendation, we tell to stay away from Bosh plugs and go with OEM. If you are an enthusiast, then you will do your research and you may buy a different brand. Rest should stay with OEM.

last code --> are these your current codes or what you got after spark plug change?

Salim

Lexmex

The P030X codes are inevitably ignition coils, but as Salim mentioned above you should stick with OEM spark plugs. I use TorqueMaster plugs and for me they work because of modifications I have done to my vehicle with intake/exhaust, but on a normal RX300, OEM is the way to go.

JusJuju

Try replacing air filter. The back 3 valves arent getting air and its throwing off the timing.