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Re: 95 Jetta With idle and oil light problem
For the idle stabilizer problem: Remove it and clean it thoroughly with carb cleaner. That should fix it. The valve itself rarely goes bad.
Oil pressure problem: The problem is frequently one or both of the sensors. Get an oil pressure gage. Harbor freight has them for $10 and use the 1/4 npt fitting. Remove the sensor from the cylinder head and read the expected pressure off the underside of the sensor. Install the gage instead of the sensor and start the car. Let it idle at least 20 minutes and check out the pressure. If it's above the spec, then replace the sensor. Jetta's are built really well and seldom will have significant bearing wear unless they are run without oil. Replacing the bearings is doable, but you'll want to pull the engine and trans first. You don't have to, but I wouldn't change the bearings without taking the block and crank to a machine shop and having them checked out.
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