Welcome to the Honda Accord Forum - Honda Accord Enthusiast Forums.
If this is your first visit, be sure to check out the FAQ by clicking the link above.
You may have to register before you can post: click the register link above to proceed.
To start viewing messages, select the forum that you want to visit from the selection below.
Not a fan of throwing parts at a problem but I had a bad O2 sensor causing very rich running and no CEL. CO emissions were six times what the state allowed, HC double. A new O2 sensor fixed it right up.
A new, direct fit O2 sensor is $44 from at least one of the auto parts stores.
'96 LX wagon F23A1 auto
Petroleum saved the whales
If you checked the normal culprits (air filter, plugs, idle speed, timing) then I'd check the vaccum line to the FPR, and the fuel return line. Unplug the vac to FPR and idle should change (increase), squeeze the return line with pliers (wrapped in tape) and idle should go up. Do this squeezing for a very short period because it puts strain on the FP (few secs).
'12 Accord SE 2.3L VTEC - 11K miles
'05 Volvo S60 T5 - 66K miles
Honda and the Honda marquee are registered trademarks of the American Honda Motor Company, Inc. Neither American Honda Motor Company nor its subsidiaries or affiliates shall bear any responsibility for HondaAccordforum.com content, comments, or advertising. HondaAccordforum.com is not affiliated with American Honda Motor Company in any way. American Honda Motor Company does not sponsor, support, or endorse HondaAccordforum.com in any way. Copyright/trademark/sales mark infringements are not intended or implied.