![]() When the vehicle is hot (operating temp) the mixture is greatly reduced, bringing it back to where it should be, causing the idle to drop and making the vibration much more noticable.įor the project you will need a few cans of carbuerator cleaner (three, maybe four) and a wiRemove the intake manifold and wire brush (one of the flexible ones that resemble a pipe cleaner). Giving you a higher idle while the engine control systems are helping the vehicle obtain operating temperature. When the engine is cold, the Air/Fuel mixture is set (by the ecu) to a rather rich condition. This is going to cause the idle to drop a bit and this is where you'd feel the most vibration.Īlso the problem is worse with a warm engine/transmission than when it is cold Power is being transfered to the transmission and then to the wheels. In gear there is a much greater load on the engine. The vibration is worse when in gear than in neutral Sounds like the Idle Air Control Valve and the Intake Manifold must be removed and cleaned. I understand some play is normal, but I'm also noticing sometimes, after I turn off the engine and release the brake the car will "shift" a few inches forward or backward before settling. At some point when I was doing front axle work (one of the CV joints needed replaced, probably went bad due to the broken mounts) I noticed that there is some decent play in the differential. What could cause this behavior? Should I check the fuel filter or the injection system? Could this be a problem with the transmission and if so, what exactly could be going wrong? Someone suggested I try injector cleaning fluid and that seemed to have made a difference, but only until I was done with that one tank of gas. Now, I noticed recently that the engine mounts were bad, so I replaced them. ![]() Also the problem is worse with a warm engine/transmission than when it is cold, presumably because at higher temperatures it idles at lower rpm. The vibration is worse when in gear than in neutral, but it's present in both cases and slowly goes away as I drive and get closer to 2k rpm - car idles close to 1k rpm. Ever since I got it some time ago the car has been vibrating a lot when stopped at a light, for example. I have a '93 Acura Integra with automatic transmission. ![]()
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