I HAVE JUST BOUGHT THIS Q45

2002 Infiniti Q45

Tiny

/209JOHN\

December, 24, 2012 AT 8:29 PM

I have just bought this Q45. It runs great on the fwy. However, acceleration from a start is not smooth. I have a smell of fuel or exhaust from the manifold area. I have a scanner and pulled 3 engine codes.

Here's the codes:

1. P0306 - Cylinder 6 Misfire Detected ( could it be a coil or fouled plug? )

2. P0330 - Sensor 2 Ckt Malfunction Bank 2 ( what should I do? Replace the knock sensor? What is the term "Ckt"? )

3. P0505 - Idle Control System Malfunction ( Should I inspect and clean the throttle body with a spray? )

Thanks in advance.

FOUND 52 RELATED QUESTIONS

5 Answers

Tiny

saturntech9

December, 24, 2012 AT 8:57 PM

Do you have a constant miss fire at idle?

Tiny

saturntech9

December, 24, 2012 AT 9:00 PM

I would try cleaning the idle air control valve. But let's hold off on the knock code till we fix the miss fire code code be setting the knock code.

Tiny

Docfixit

December, 24, 2012 AT 9:04 PM

1. Yes also injector pull plug take a look maybe fouled
2. Maybe open or short in circuit[CKT] or knock sensor
3. Either faulty throttle actuator or intake leak
Would start with plug inspect then erase codes drive see what resets

Tiny

/209JOHN\

December, 25, 2012 AT 4:04 AM

Here's an update: Today I took off my intake and cleaned my "MAF SENSOR" with CRC maf cleaner.

Also, I bought "sea foam" throttle body cleaner and sprayed and wiped the throttle plate.

I cleared the codes and test drove it.

CEL came back on again. This time one 1 code though. It was "P0505" Idle control malfunction. ( IAC VALVE. Should I replace it? )

Tiny

saturntech9

December, 25, 2012 AT 10:31 PM

The first thing you need to do is see if you have a vaccuum leak?

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