Mechanics

QUESTIONS FOR ALL OTHER CARS DTC CODE DIAGNOSIS

2002 All Other Makes All Other Models

Computer problem
2002 Questions for all other cars V8 Two Wheel Drive Automatic 135440 miles

VIN #5B4KP42R523344230
2002 WORKHORSE STEPVAN
5.7 - 8 GAS ENGINE

I have an Actron generic DTC code reader but no access to a Tech II scanner which is what I need to figure out the codes I'm reading. I'll list them below and hope you'll be able to give me some further idea on which way to go to figure this out. Each time I clear the codes the engine starts running better but they come right back.

DATE 07/30/09 07/08/09
MILEAGE 135,121 135,440
CODE) PO300 PO300
THROTTLE POSITION) 20.0 0.3
ENGINE RPM) 2099 772
LOAD VALUE) 16.4 5.0
MAP SENSOR) 52 45
AIR FLOW RATE) 37.81 11.67
COOLANT TEMP) 199 NA
SHORT TERM FUEL TRIM 1) -5.6 0.8
LTFT1) 11.7 7.0
STFT2) -4.6 0.8
LFTF2) 12.5 4.6
STFT3) -12.1 -96.7
LTFT3) 90.6 45.3
STFT4) -5.1 -89.7
LTFT4) 8.5 -93.8
VEHICLE SPEED) 37 0
FUEL SYSTEM 1) CLOSED OPEN
FUEL SYSTEM 2) CLOSED OPEN
OTHER CODES ON 07/30) 101-327-650
OTHER CODES ON 08/08) 327-650
Avatar
Mtrdude
August 10, 2009.



Code p0300
is a misfiring code and have to check it for tune up as a 1st step
check fuel pressure
check coil

BMRFIXIT
Aug 12, 2009.