Assalamualaikum guys. I recently got a 2011 GLi after selling my Alto VXR. Car is in good condition and the engine is also quite strong for it's age. I got it's catalytic cleaned by the machine and not acid along with hydrogen cleaning. One thing I noticed was that when they opened the I take manifold, there was a sensor with rubber or something wrapped around it and it was just laying with wire connected to it. When I asked the mechanic what's that for they said it's fine the way it is. Just wanted to know if I should get it fixed as it has been bothering me since that day.
