hotwheeled wrote:
Hi,
tried this KS move on a 2002 s/c frontier after poor performance and ks code... 0328 code is gone but having other issues that i am unable to diagnose that i think were related to the knock sensor throwing a code..no power at highway speeds...boost feels all gone (feels like pullin a stubborn mule). allot of heat in the engine bay and timing still looks retarded(using a scan gauge with simple knowledge on how to use it).
i have no other codes...things i have checked,exhaust replaced...checked vacuum lines...spark...rotor and distributor...cleaned maf..running hightest 93 fuel and do not know where to go from here. dealer has inspected with no results..it checked out to them. it runs fine while its cold..about ten minutes...then it just bogs down...looked for a crack in the exhaust manifold...could see anything apparent...no noise from either side.
any help appreciated for direction on my next move.
hw
When you say the code is gone, do you mean you cleared it? If so, it may come right back. With a 328 code, which is high voltage, your knock sensor very well may be performing normally. If there is engine knock, that would cause a high voltage situation, causing it to throw a code and therefor retarding the timing, which would then cause your poor performance. It's a fail safe to prevent pinging burning a hole in a piston.
While a lot of factors could cause the engine knock, I would start by buying gas from another vendor that goes through a lot of gas. Run a few tanks and see if it goes away. You could also try cleaning the injectors with Sea Foam (there's a post on that in here as well). Dirty injectors could cause a lean-fuel situation which would cause it to knock as well.