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Repair guides and support for the 5th generation Honda Civic, first released in late 1991.

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fixing for my civic

what is wrong with my 95 civic vtec when the rpms keep going up and down like its losing power and it dont run as fast as it use to what part would i have to fix ?

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carlos, that is the million dollar question and not one that can be easily answered on here. It could be a bad O2 sensor, a vacuum leak, poor plugs or plug wires and many more things. Check the forum at http://www.civicforums.com/forums/ to see if they have a better answer for you. Ultimately I'd take it to a place like Autozone or anyone that has an engine analyzer and get some more information on it. Good luck to you

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The AutoZone check is free.

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that is simply a misfire that is occurring,

there are many things that it could be...starting off with air filter..check if it is excessively dirty, spark plugs (pull out each individual plug inspect it for carbon build up) if you car has a distributor cap take that off inspect the connectors in there for carbon both inside and outside portions of the cap, also look at the rotor if thats is worn out, next inspect the pvc valve that can also cause inconsistent idle when clogged....if that doesn't work replace the fuel filter, o2 sensor...and spark plug wires.....(usually if you o2 sensor was the issue you would have a check engine light...so leave that till last...)

also you should check your cars idle rpm when in park or neutral, it should be between 500-650....if that is off then it can also cause lag during acceleration

btw you should also try spraying carburator cleaner in the chamber with the car running...but be careful it may stall and turn off so just give it some gas at the same time by flipping the throttle....

hopefully if you work through everything that should fix it...most of the solutions dont cost much!!

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