ydrol Posted January 31, 2016 Share Posted January 31, 2016 Hi all, I've got an intermittent knocking sound. Comes and goes. Sometimes from cold start, othertimes when driving for a while. It did not occur when the mechanic had the car for two days so he couldn't progress. I've since had the car back (after service), and it occurred again, so I thought I'd record it, to show him later. I parked with engine running, and as I was stationary and it was after dusk, turned the automatic lights off - and the sound was quieter!? I put the lights back on again, and it was louder. Any thoughts? I couldn't pop the bonnet without switching off and removing the key, but after switching off and on the ignition, the sound went away again. Here's the video. Quote Link to comment Share on other sites More sharing options...
JamesV Posted February 1, 2016 Share Posted February 1, 2016 Have you checked the alternator ? Sent from my iPhone using Ford OC Quote Link to comment Share on other sites More sharing options...
ydrol Posted February 2, 2016 Author Share Posted February 2, 2016 Just from the video, mechanic thinks it might be either alternator or crank shaft pulley. I often hear a brief little version of that noise when pulling away, just before the car starts moving (when clutch is slipping briefly before its locked in?). Does this point to crankshaft pully? but it only lasts for less than a second (sorry for terminology I dont know much about cars!) Quote Link to comment Share on other sites More sharing options...
JamesV Posted February 3, 2016 Share Posted February 3, 2016 Does the noise increase when turning electrical loads on for example headlights blowers etc if so I would take a deeper look at the alternator Sent from my iPhone using Ford OC Quote Link to comment Share on other sites More sharing options...
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