My '91 ex accord with a stock (aside from cai) f22a4 will not rev past 5,500 Rpm's. I'm not planning on racing or actually running it until I actually build it but I'm the kind of guy who wants my car to run right. It's done this since I got it and its been throwing the cel code 41. It has the original o2 sensor with 370k miles (motor rebuilt with new head/gaskets/seals/crank/pistons etc 100k back). Would replacing it with an ngk sensor fix this problem? Everywhere I looked doesn't give a straight forward answer.

 

lol original o2 sensor at 370k miles ?

It probably will but I can't guarantee it. lol Buy a Denso sensor instead since they are the actual maker of Honda oxygen sensors.

 

Yeah lol didn't think to replace it until I started getting cel codes. And now it keeps cutting off while I'm driving and I have to pop the clutch for it to start up while rolling, when it's sitting still it won't start unless I crank it with it in 1st so it'll lurch forward then start up. We've replace the ignition and everything but it still does it.