Exhaust
#1
Exhaust
New to this site. New to civics. NOT new to hondas. Anyone know of an easy DIY fix for the trouble codes p1166, p1167, p0401? I know its the O2 sensor and egr valve. I dont have alot of money to put into this car yet (97 Civic HX). It runs fine I just want the CEL to go away.
#6
(depending on what you mean by clicking sound) ... Check the exhaust manifold for a crack, especially near the oxygen sensor hole.
#8
The other poster has a good point about checking for a cracked manifold, it is rather common.
Clattering noise from inside the top of the engine when it is cold could just be valve noise. These engines do not have hydraulic lifters, so the valve clearance needs to be adjusted periodically to compensate for wear.
The adjustment is done by taking the valve cover off and turning a screw at the end of each rocker arm. Be sure to read the official procedure and follow it exactly since improper adjustment will cause bad running and possible damage.
Even properly adjusted, a little valve noise may remain, it is nothing to worry about.
Clattering noise from inside the top of the engine when it is cold could just be valve noise. These engines do not have hydraulic lifters, so the valve clearance needs to be adjusted periodically to compensate for wear.
The adjustment is done by taking the valve cover off and turning a screw at the end of each rocker arm. Be sure to read the official procedure and follow it exactly since improper adjustment will cause bad running and possible damage.
Even properly adjusted, a little valve noise may remain, it is nothing to worry about.
Last edited by mk378; 10-30-2012 at 04:46 PM.
#9
ended up just cleaning the valve, i had 4 error codes and after the cleaning only had 1. its still the o2 sensor, and my mechanic across the street said to do 5 drive cycles(warmed up then cool down) and that last code may go away