surgiblade

Drove home- 1 mile fast, 16 miles in SLOW traffic. Turned off stereo- heard humming motor like noise from back of car-could not track down-no noise when engine off- noise appears only when engine starts.

Any wisdom appreciated in advance.

Mike

dprantl

Fuel pump? Jumper the fuse to make the fuel pump run while the engine is off to see if it makes that noise.

Dan
'86 928S 5-spd w/LSD

ErnestSw

Sounds like you've got a fuel pump eating a bearing.

surgiblade

Does this mean a new fuel pump ?

Mike

ErnestSw

Could be. I wouldn't drive the car until I had it checked out. The fuel pump is no big deal labor, parts or $$$$$$ wise.

Bob Rouleau

Did you get in a 911 by mistake?

surgiblade

Thanks much Ernstsw and dprantl-

Rob- at 6'3" I cannot (regretably!) fit into a 911.

Mike

SharkSkin

Mike, there are other things that can cause the pump to make noise, like a restriction(filter or horked in-tank pump). Best bet is to pull it out and run some fuel through it in isolation to see if it's noisy by itself. Never run it dry!

marton

electric aerial? sometimes mine does not get up & down properly then hums to itself.

Marton

UKKid35

Have you tried the little blue pills?

WallyP

Some fuel pump noise is normal - you need to do a LOT of checking before buying a fuel pump.

Start by pulling the cover from the pump and checking while the engine is running. Look for the pump, the filter, or any line, even a rubber one, touching the body - everything should be supported on rubber noise isolators.

While most filter replacements are unnecessary, it doesn't hurt to change it to see if the noise level drops - a partially plugged filter will increase the fuel pump noise slightly.

marton

yes, but they did not do anything for the humming before I pushed them into my ears. Where did you push them?

Marton