My car has been having a problem for about 2 months now and I have tried a lot of things to fix it. The problem is the rough idle( sounds like the engine is coughing), then when it is at WOT, it feels as if the car is lagging and it doesnt pull, then pulls, doesnt pull, and so on and so on. I replaced the fuel filter, and used fuel injector cleaner, but it is still doing it. I am so angry at this problem and it is so annoying. I think it might be my fuel injectors but I can't ge thte injectors out. Also, my CEL threw a code of rear O2 and Knock sensor. Can anyone help?

 

change the knock sensor this is why u are losing power.. What 02 sensor is it? LEft bank or Right bank or the third one?

 

The rear O2 sensor is one of those POINTLESS things on our cars, doesn't really do jack. To check the injectors just get a LONG screwdriver and listen to them with your ear. They should be ticking pretty fast. My rear ones are ALL pretty slow compared to the fronts. Don't waste money on those fuel injector cleaners as they don't really do anything. You could try one of those $70 fuel injector kits where you cut off the fuel and use a can of some fluid connected to your fuel rails as gas for the cleaning. The car just dies when you're done. The only real solution is just to replace them injectors.

 

you could get them balanced and cleaned. That's if nothing wrong with them mechanically or eletronically.

 

Oh. One of my friends told me that the knock sensor goes if there is something wrong with the injectors. Is this true, and if so, how much will a knock sensor run me?

 

Sounds interesting. I might check on that. There doesn't seem to be anything wrong maybe they are just clogged up or something. They tick at maybe half the rate as the front ones. Thanks man.

 

$90 bux on ebay

 

Are you serious 1MAX2NV? How do you balance injectors? Could this really be causing loss of power. My dyno results were really low and I just removed/replaced one of my injector cover things.