The Central Hub for DSM Community and Information

For 1990-1999 Mitsubishi Eclipse, Eagle Talon, Plymouth Laser, and Galant VR-4 Owners. This is where the DSM platform history is documented and archived. Log in to help us in our mission, and to remove most ads from the browsing experience.

CEL codes p0121 and p0122, need help

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

eclipse97blitz

Probationary Member
9
0
Mar 31, 2004
holiday, Florida
I'm getting these two codes and the car is running like ****. I've replaced the tps twice and still having problems. Is my pcm going bad or what? NEED HELP. What is causing these cel codes?

thanks
Eclipse97blitz
 
thanks for the reply, tomorrow I'm going to get a new map sensor and see if that fixes the problem. i check the wires from the tps to see if any melting has accrue. they seem fine from what i saw. i also replaced the front o2 sensor. I'm having a big problem with the car running really lean at times. and really rich the rest of the time.
 
i replaced the map sensor and it seems to have fix the fuel problem, but I'm still running more rich then I did before. I've purchased a apex AFC and will install it to help even out the air fuel. again thanks for the help
 
well it seems I'm still having a problem when i first start driving the car, I'm getting popping noises coming from the exhaust. first and second gear are the worst. put it seems to get better as i drive. after awhile it seems to go away, I'm still getting the same cel codes. I'm sure thats the problem. and it idles find at first then it goes up to 1500rpms and I'm running real rich all the time.
 
well i finally found the problem, after taking out my intake pipes and moving some wires i found a spot where the wires leading from the pcm had been touching the block and had melted the 3 wires going to the tps. so i fix it and now the car runs fine. :thumb:
 
Add Value - Be Respectful - No Trolling - No Misinformation - Participate Often!
Support Vendors who Support the DSM Community

Latest Classifieds

  • Wanted 4G63 WTB Evo 560cc injectors or 450cc
    Im looking to pick up a set of evo 560cc injectors or possibly a set of 450cc injectors if the...
    • eclipsemf
    • Updated:
    • Expires
  • Wanted 1g Looking for pn MB522081
    Looking for a factory 1g double din radio bezel pn MB522081
    • Kgilis
    • Updated:
    • Expires
  • For sale 2g 2g Talon drivers side airbag
    Drivers side 95-98 Talon airbag. Excellent condition. Can ship UPS ground. Message...
    • Galant665
    • Updated:
  • For sale 2g 2g Talon tail lights.
    Pair of 2g OEM Talon tails. Decent condition. Not show quality. Right has a section on bottom...
    • Galant665
    • Updated:
  • Wanted [WTB] Hyundai 4g63 inner valve cover bolts
    Looking to source inner valve cover bolts for a Hyundai 4g63 valve cover
    • TheDude236
    • Updated:
    • Expires
Back
Top