littleblue4runner

the other day i hear a buzzing noise when the rpms are at 1900 or so but dose not do it when i put it in park and bring the rpms up to 1900-2000 and nothing. could it be my CV or a belt?

what do you think?

thanks guys

morena67

-May be a loose spring in one of your manual hubs...since the buzz appears only when driving... worth take a look...

littleblue4runner

ok i will, anything less it could be?

scope103

The PAIR valve (passenger side, near firewall, tucked under the plenum) will buzz if (when) one of the four screws holding the vertical metal cover comes loose. Stick your hand in there in and feel for them. If you haven't lost the screws yet, you may be able to tighten them with a stubby #2 phillips. If you need to replace them, spring for 5mm allen-head bolts; they are easier to reach with an allen (hex) wrench.