s4 t2 wandering idle question
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s4 t2 wandering idle question
i Have an s4 t2, emmisions and bac deleted. car runs perfectly, but the idle randomly changes. it'll idle nicely around 800, then during a short drive, go up to 1000, sometimes 1500. but it will go down and stay where its suppose to be if i slip the clutch a little bit, like say i roll forward a little. the idle screw is secure, tps is adjusted, no vacuum leaks. not sure what to check. my stock vert did the same once in a while as well.
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To be fair, a missing BAC won't cause a high idle. It will just cause an unstable and unregulated idle.
As suggested, it sounds like something in the throttle body is sticking. Check cold start cam, check secondary throttle blades. Hose the whole throttle body down with brake cleaner and give it a good air blowing. Then spray penetrating oil, work all the shafts, then clean off all the oil.
As suggested, it sounds like something in the throttle body is sticking. Check cold start cam, check secondary throttle blades. Hose the whole throttle body down with brake cleaner and give it a good air blowing. Then spray penetrating oil, work all the shafts, then clean off all the oil.
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To be fair, a missing BAC won't cause a high idle. It will just cause an unstable and unregulated idle.
As suggested, it sounds like something in the throttle body is sticking. Check cold start cam, check secondary throttle blades. Hose the whole throttle body down with brake cleaner and give it a good air blowing. Then spray penetrating oil, work all the shafts, then clean off all the oil.
As suggested, it sounds like something in the throttle body is sticking. Check cold start cam, check secondary throttle blades. Hose the whole throttle body down with brake cleaner and give it a good air blowing. Then spray penetrating oil, work all the shafts, then clean off all the oil.
I had voltage issues with the switch before, so i will look into that aswell
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