Horrible noise and poor brakes.

kkk2 · 18th October 2009, 05:53 PM

Have you checked wheel bearings? have had these cause poor braking where you needed to pump brakes for them to work?

**dullbird** · 18th October 2009, 06:08 PM

the noise could definitely be bearings I reckon dont know about the missing brakes though sorry

**JamesB** · 18th October 2009, 06:15 PM

Nose is definately from the engine when the problem is occuring , the rattly noise speeds up and slows down with engine rpm.

**dullbird** · 18th October 2009, 07:50 PM

perhaps there is two separate things going on?

have you had your head under the bonnet to hear the area where the noise is coming from with someone blipping the throttle.

**discowhite** · 18th October 2009, 08:07 PM

dose the this

intermittant horrible rattly noise comeing from the engine rattly noise speeds up and slows down with engine rpm.

happen when the AC compressor kicks in??

cheers phil

**dullbird** · 18th October 2009, 08:09 PM

Originally Posted by discowhite

dose the this happen when the AC compressor kicks in??

cheers phil

funny I was thinking power steering...but then remembered that horrible noise was in my disco not a fender

**JamesB** · 18th October 2009, 08:29 PM

Yes I have been under the bonnet whilst revving the engine and checking for vacuum at the booster. Sound definately in engine and linked to loss of vacuum.

**JDNSW** · 18th October 2009, 08:41 PM

Could an intermittent vacuum leak cause the pump to get very noisy because a lot more air than usual is going through it?

John

**dullbird** · 18th October 2009, 08:42 PM

Originally Posted by JamesB

Yes I have been under the bonnet whilst revving the engine and checking for vacuum at the booster.

Sound definately in engine

and linked to loss of vacuum.

So are you saying that the sound is IN the engine......???

thats why I was asking can you isolate where the sound was coming from I, meant in the engine bay.
is the sound coming from the the area of the vacuum pump?

**JamesB** · 19th October 2009, 08:43 AM

Yes sound is coming from engine around vacuum pump area. As vacuum pump has been replaced and same fault occured with both pumps could it be something other than the vacuum pump ? I have looked at a breakdown of that area on RAVE cd and pump works straight off cam shaft lobe. My theory is the plunger/follower in the pump is getting stuck in and the noise is the cam lobe tapping on the pump plunger/follower. If this is the case why has this occured on both the old and new pumps.

Thread: Horrible noise and poor brakes.

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