anyone know what maybe the problem? thanks for any advice





Modified by raylude at 4:17 PM 5/21/2005

 

prob o2 sensor (primary), or your dizzy is advanced to far.

 

Whens the last time your car had a cap/rotor/plugs/wires/fuel filter replaced?

 

My first guess would be O2 sensor.

 

i also noticed it will idle high then back to normal then idle up and down all at random times it wouldnt do it when i took it to one of my mechanics so he couldnt tell me anything and i havent changed the cap and rotor or fuel filter yet i just dont see why it would mess with my idle

 

bump for more help the car didnt idle bad last night whats goin on

 

fuel trim is your O2 sensors, check them...if your O2 sensors dont work then your car will run really lean all the time are really rich all the time, in this case it is really lean. thats should fix the first code at the same time also

 

well i used seafoam on it then erased the code and its fixed no bad idle no codes its been 3 days i think im still goin to replace the o2 sensor and do the rest of my tune up im still confused as to why it happened in the first place

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by speedracer9k &raquo;</TD></TR><TR><TD CLASS="quote">fuel trim is your O2 sensors, check them...if your O2 sensors dont work then your car will run really lean all the time are really rich all the time, in this case it is really lean. thats should fix the first code at the same time also</TD></TR></TABLE>

since the o2 is throwing a cel the car runs in limp mode = rich

 

not quite limp mode, but it does richen out....

limp mode the car doesnt even use the map sensor signal, it is way rich, just enough to drive and be safe....

rich=safe

so when the ecu cant get an o2 reading to see whether it needs to go richer or leaner, it defaults to rich to be safe....

you ruined the o2 doing that seafoam ****, probably over clouded it with crap....you guys really should stay away from that, it ruins seals and gaskets, not to mention piston rings....

 

Anytime a Cel is present your ecu goes into open loop, that means its running off pre programmed info like ,idle speed, injector pulse width, ignition timing, ect.