2002 Questions for all other cars DTC CODE DIAGNOSIS

2002 ALL OTHER MAKES ALL OTHER MODELS
135,440 MILES • V8 • 2WD • AUTOMATIC
Avatar
MTRDUDE
  • MEMBER
  • 51 POSTS
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
Aug 10, 2009 at 9:25 AM
Advertisement
Avatar
BMRFIXIT
  • ASE Certified Mechanic
  • 19,053 POSTS
  • ASE Certified Mechanic
Code p0300
is a misfiring code and have to check it for tune up as a 1st step
check fuel pressure
check coil
Aug 12, 2009 at 7:47 AM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.