Buzzing sound on top of engine

wolfsburg02 · Messages: 497 Registration: 11.05.2002

When I switch the ignition on there is a constant buzzing sound, it comes from a pipe leading into a gadget in the middle of the top of the engine just under the aluminium injector cover (or at least using a stethoscope suggests this). Previous car it buzzed for a few seconds then went off, this one just keeps going on and one. What should it do? Thanks

AMPowerJ · Messages: 152 Registration: 03.16.2003

Would help to say what year, model, and engine type you have.

Micah D. Cranman · Messages: 71 Registration: 10.27.2002

Sorry, yes, it's a '93 850 20v 2.4 auto.

Brian99R1 · Messages: 451 Registration: 05.02.2003

It may be your idle motor. Do you have a black plastic cover sitting over and just forward of your throttle body (at the nearside end of the fuel rail)? If so, the buzzing will probably be coming from under there. If the noise is loud it can be a sign of the motor failing.

Thewiseguy · Messages: 11 Registration: 10.23.2003

It's definitely under the fuel rail is it? Couldn't be the IACV under the plastic cover over the throttle area?

Cruzer · Messages: 352 Registration: 10.22.2002

Ok the plastic cover is on the nearside of the car next to the fuel rail .

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Buzzing sound on top of engine