I had the mech. check the cp sensor and he stated everything was ok .but if we unhook the sensor the car runs but the mech advices me not to drive the car like this. he dont know what to do next. the engine light wont come on to check the codes at the dealership that they wasted 4hrs looking for the problem. i am hoping the guru will come thru for me .
thanks for any feedback
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Re: honda 2005 civic
This must be an american model as a europeon one only a dealer would be able to connect into the cars ECU ,try another dealer with proper motor vehicle technicians and not a few wallys that can only change the oil .sorry cant advise on this one without the manufacturers software.
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changing the exhaust system can alter the gas flow and may create problems for the sensors . The HO2s sensor and the O2 sensor may now be operation on the edge of the parameter settings and any exhaust coating on the sensors may be affecting their performance. Run fault codes to check the sensors and sometimes removing them and cleaning them in vinegar to remove the coating will improve the situation. What ever is the problem if it started after the manifold change then that is the area in which to seek answers.
You don't say what state you are in and what the requirements. The early 90s Honda Civics frequently are high on emissions under certain circumstances depending on how the test is run. If you are in a state that allows you to get a waiver with a certain amount of repair - that would be the recommended way to go. A lot of times the amount required is enough to detect the problem, but if not it is basically the cost of keeping the car. I am in Washington State and my 91 Honda Civic runs great and gets 38 mpg but fails the test. I have a new O2 sensor, catalytic converter and distributor and fail. I pay $150 for repairs / waiver every 2 years - and I am an ASE Certified Master Tech. I figure $75 a year saves me a car payment.
this car come with tree diferent engines the answer i'm going to give you is for a 1.7 engine sohc that codes means you have a leak on the evaporative system this system monitor the vapors from fuel tank this code some time might appear for filling the fuel tank with car runing i recomend you to clear code and make sure the fuel cap is not loose because there is a fuel pressure sensor in the tank and if the sensor don't read the right pressure then it will set the code