Question about 1995 Honda Civic

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RPM GOES UP AND DOWN.

MY ENGINE GOES UP AND DOWN, JUST RECENTLY CLEANCED THE THROTTLE BODY. REPLACED GASKET. HAD BATTERY AND ALTERNATOR CHECKED OUT EVERYTHING WAS GOOD.

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Yes I would check the idle air control valve. sound like a classic case

Posted on May 27, 2009

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Probably vacum leak around throttle body or carbon in idle motor try cleaning throttle body and idle motor with carb cleaner good luck

Posted on May 27, 2009

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Mitsubishi Mirage 95, high rpm idle after cleaned throttle body. I cleaned my throttle body because the idle speed during cool start is low(600rpm) and gradually increase along with the temperature of


If the car has not ran very long since you did the cleaning it might be excess throttle body cleaner in the intake manifold. Otherwise, your is with the throttle body. The throttle body controls the air to the engine, the computer controls its position and everything else in the air/fuel mixture. I would double check to make sure that the throttle body is closing completely. If that is not the problem, I would look for either a leaking gasket or a hole in the system somewhere between the throttle body and the engine. Because if you are getting too much air to the engine, the computer will think that is the rpm that it is supposed to be running, and it will give the engine fuel to burn the air.

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Check all of the battery terminals and cables and check the wires on the starter/selonoid, start from the battery and follow the cable out and check all conections , clean and tighten them and if it still does it the starter/selonoid is bad and needs replacement...

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I replace my alternator now my rpm gage idele up and down


you will need to clean out the throttle body. What happens is that when the car is new the computer has a default value for the throttle and it knows how much to move it to make the vehicle run. As time goes carbon gets on the throttle bore and starts to cause the throttle blade position to be changed by the computer. This is what the computer is supposed to do. When you disconnected the battery during the alternator replacement, the computer went back to the default value.

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2001 dodge durango engine rpm's are fluctuating up and down. what could be causing this and could this cause the transmission to shift eractically


Quest#1 Your intake manifold is leaking
Quest#2 Yes
Spray carb cleaner while running at intake manifold gasket , both sides, and check for a difference in running condition while spraying to confirm leak here. Replace all intake manifold gaskets and plenum gasket.
If this does not confirm intake leak , have the Throttle Body cleaned manually by a professional, or yourself using specifically" Throttle Body Cleaner "

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ERRACTIC RPM


Clean your throttle body. Once the battery is disconnected and the computer reset, it no longer increases power to make up for a dirty throttle body. Get a $4 can of carb cleaner. If you go to a mechani9c they will tell you that it is the ac compressor.

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Idle Problem when you slow down of come to a stop idle goes low


THis has happened to me in the past. My fix was to clean the throttle body. The problem began after my battery died. The computer was defaulted back to its original settings after replacing the battery. Once I cleaned the throttle body, everything was fine. This happened at about 85,000 miles.

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