02 sensors causing possible limp mode?
02 sensors causing possible limp mode?
codes that its throwing are big evap leak, PS pressure switch, and two o2 sensor codes/circuit. I'm still having issues with a rough idle and no power from a dead stop, could this be some sort of limp mode caused by the bad o2 sensors? no check engine light though. I'm totally stumped i thought the new pcm would have fixed all of my issues, old pcm never gave me any of these codes.
you saying its throwing 2 o2 codes, a ps code, and an evap code? and no check engine light? you've kinda accidentally stumbled into your issue. check your ECU. if you have any pending codes, your CEL should be on...
Your check engine light should come on for a few seconds when you turn your key on to let you know it works.Your rough idle could have something to do with the ps pressure switch.During periods of high pump load and low engine rpm it will send a signal to the PCM.The PCM will then send a signal to the IAC to speed up idle to keep the engine from stalling.So maybe its causing the IAC to not be opening and closing right giving you rough idle.What was the it doing before you replaced the PCM?
the reason why i replaced the pcm it had a p0601 code (internal pcm failure) would hardly start and run very rough once it did, and sometimes it would run smooth. but i get the exact same symptom with lack of power from a dead stop. its not every time but its happend 5 or 6 times. and i thought the PS switch was only while you were turning the wheel like parking. mine does it at a stop light.and no problems parking of yet.
Trending Topics
The ps pressure switch works any time there is high pump load and low engine rpm such as when parking.I was just saying it maybe fooling the PCM into thinking there is high pump load when there isnt so it tries to correct the idle for that.