Ok, well lately my car has been idling extremely poor AFTER it reaches operating temp, and I have noticed my fuel gauge dropping fast!! But, I have no CEL ....

Does this sound like a bad o2 sensor? What else could cause rough idle (sometimes down to like 200-300 rpm) and large fuel consumption??

Any help would be apprecitated!! Thanks

Oh ya, car is a 1996 Civic DX (d16y7) completely stock

 

I'd maybe check your spark plugs and se if they are fried. My car's acceleration has gone to **** and I checked out my sparkplugs and they were fried. O2 sensor is a possibility as well.

BTW: your car kicks ***.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CRacer21 &raquo;</TD></TR><TR><TD CLASS="quote">I'd maybe check your spark plugs and se if they are fried. My car's acceleration has gone to **** and I checked out my sparkplugs and they were fried. O2 sensor is a possibility as well.

BTW: your car kicks ***. </TD></TR></TABLE>

Good idea...Ill check the plugs today...I hope they're good though, only 3 weeks old....

Any other ideas?? Would I DEFINATELY get a CEL if one or both of the o2 sensors were bad?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by awdriscol4 &raquo;</TD></TR><TR><TD CLASS="quote">
Any other ideas?? Would I DEFINATELY get a CEL if one or both of the o2 sensors were bad?</TD></TR></TABLE>

Poor idle after warm is usually a sign of vac leak or IACV gone bad.

Poor fuel milage could be caused by 02, they should be replaced every 75K or so. They can be 'bad' and not throw a cel; when old, they slow down and don't switch the fuel mixture fast enough causing poor milage, but they still work so you won't get a cel.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EX_AutoXer &raquo;</TD></TR><TR><TD CLASS="quote">Poor idle after warm is usually a sign of vac leak or IACV gone bad.

Poor fuel milage could be caused by 02, they should be replaced every 75K or so. They can be 'bad' and not throw a cel; when old, they slow down and don't switch the fuel mixture fast enough causing poor milage, but they still work so you won't get a cel.</TD></TR></TABLE>

Good to know, thanks
The car has 80k on it, and I doubt they have ever been changed, so I think Ill go ahead to replace them, looks like I need to check for a vac leak too....

 

What car did those rims come off of?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by flood &raquo;</TD></TR><TR><TD CLASS="quote">What car did those rims come off of? </TD></TR></TABLE>

Those are OEM ITR wheels