1999 Ford Ranger Check engine Light

Tiny
MGEC90
  • MEMBER
  • 1999 FORD RANGER
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 84,000 MILES
Check engine light is on (sometimes it blinks). Truck has no acceleration. Foot all the way down. Acceleration does finally respond but only after a minute or so (dangerous on the highway when merging). Codes are P1131, PO301, PO302, PO303 (Autozone). Changed two O2 sensors upstream, fuel filter, air filter, DPFE sensor, Maf sensor, TPS sensor, plugs and wires.
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Sunday, September 21st, 2008 AT 10:06 PM

1 Reply

Tiny
BMRFIXIT
  • EXPERT
Codes are cylinders misfiring

check coil check injectors

reset PCM what do u have for codes returning

do an exhaust back pressure test
check MAF sensor
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Monday, September 22nd, 2008 AT 6:20 AM

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