service engine soon light!!!!

**adamsoldier** · 06-19-2009, 06:56 PM

this light wont leave me alone. i am keep reading the codes and it is always same stuff. it is saying that o2 sensors low voltage and multiple miss fire
this is the thing i change all o2 sensors and spark plugs including wires.
today i reset all codes again but i know when i push the car little bit it will pop again. i have no idea how to fix this please help. guy told me maybe i have a problem with power controle module.... do anyone know what he is talking about. so far me and 6 mechanic cant solve this problem and it is killing me.
i am in germany and this people has no idea about american cars.

**thearborbarber** · 06-19-2009, 07:04 PM

Try cleaning the MAF. You symptoms fit a dirty MAF to T. There is a spray that is made for safely cleaning mafs.

**egod** · 06-19-2009, 07:06 PM

if it is signaling a misfire it could be your ignition coils not providing proper spark. It could also be faulty knock sensors.

as for the low voltage i would check all the wiring and fuses as well as the connectors

**karpetcm** · 06-19-2009, 09:50 PM

Our cars are pretty easy to fix and if they stop trying to rip you off and playing, ohh this is real hard and ohh i dont know we have to replace this first and then that and if that doesnt work then we have to replace the other thing which is even more expensive crap, youll be fine. Look for a good mechanic even if its further away its well worth it. They might still charge about the same but you get less BS in the end. Im sure your problem isnt anything big at all and once you find a good mechanic, youll be on your way.

**DaddySS** · 06-20-2009, 12:56 AM

You need to give us some info on the car. Stock exhaust or headers? Has it been tuned or stock tune? What did the plugs look like when you pulled them? Which sensors are giving you codes?

**Too Fast** · 06-20-2009, 02:06 AM

Also could be low fuel pressure causing this.

**planemech2** · 06-27-2009, 04:37 PM

My P0300 random misfire was caused by #6 plug wire not tight on plug.

**Art99SS** · 06-27-2009, 10:25 PM

I still had low volt in sensor 1 bank 1 with a new 02 sensor so I switched the sensor 1 and 2 and the light was still on. I moved the alternator aside to inspect the 02 sensor wires and found the ground strap was contacting the sensor wire which was exposed. I pulled them apart and wrapped with electrical tape and solved that problem. Check your wires. Hopefully and easy fix.