Hey guys
I have a Bosch 040 fuel pump in my R33 which i have had int he car for around 5 months or so. Last weekend on the way home, it suddenly starting making a really loud whining noise. To me it sounded like vibrations, as the pitch changed as the revs of the car changed. At idle it is really loud, where as as you reach higher revs it got less audible. When the car is off, and you turn the key to prime the fuel pump, the sound is very very loud. Louder than when driving, u can hear it clearly from outside the car.
The last couple days it's being on and off, usually when the car is cold it's fine, after a while it begins.
Anyone have any ideas on what i could be. Are these the symptoms of a dying fuel pump, although is shouldnt be after this time.
It's just annoying as i'm trying to sell my car, and it's pretty embarrising and hard to explain when they are driving the car and suddenly this massive whining can be heard..lol
Any help much appreciated
Simon