Quote:
Originally Posted by X5driver214
Check your engine mounts, I had similar problem where my car would vibrate while in gear at a stop, I replaced the engine mounts and it was smooth again.
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I have experienced the same issue in an old E36. The deceleration symptom sounds like your engine mounts. I've driven an E36 without ANY engine mounts installed so I know exactly what the worst case scenario is. If you've cleaned the throttle body, did you also clean the Idle Air Control valve? Also a tip I picked up is to put some white lithium grease around the sealing surface of the nipple of the IAC - the area that you're going to shove into the vacuum hose under the manifold when you reinstall it. It helps to slip it in easy and form an air-tight seal.