Help.

I'm trying to work out where a strange metal-on metal squeek is coming from in my G., it's noticable when the RPM drops from about 3000, and when moving with no load. The squeek doesnt seem to be RPM or road speed related, and may be something as simple as something loose in the front dash.

While looking for it I noticed my front left cooling fan doesnt spin, wheras on startup, the right one does - is this normal or do I have a duff fan unit?

S.

I had this problem on my G- it was a loose front control arm- made that metallic squeak sounded like it was in the dash.

__________________
Ron
Current Sports Cars:
2004 Gallardo
2004 996 GT3
1999 Viper GTS
1997 993TT
1994 965 Turbo 3.6
1978 930
1972 916
1970 914-6

interesting - was it something you fixed yourself, or was it a dealer repair?

Ignore my post on the fan above - I worked out it's temp sensitive. The Right fan runs first, and then the left if needed.

Still trying to find a loose front control arm, or in fact, even the arm..

Hey John - just noticed we are in the same town.. Who did you use to fix your control arm issues?

S.

Ultimate in Orlando fixed it under warranty

__________________
Ron
Current Sports Cars:
2004 Gallardo
2004 996 GT3
1999 Viper GTS
1997 993TT
1994 965 Turbo 3.6
1978 930
1972 916
1970 914-6

Ok. the noise is coming from the vacuum hose going into the break booster. I've never been sure the brake assist was working on my G. but disconnecting the hoze certainly makes it harder to stop, but not that much harder. I swear the brakes on my minivan are better.

I was in my dealer and they had another 04 with the same noise - anyone like to comment? The noise is like a buzzing behind the dash when the RPM drops from 3k down. You can't hear it from outside, unless you stick your head in the trunk and listen.

Ok. found the issue - for those with the workshop manual it was part 6 on 611.01.00 - a t-piece which splits the left side vacuum from the manifold into two streams, one off to the break booster, one off to the vacuum canisters.

Mine had no vaccum canister side (broken off), which is probably why it takes about two miles to stop from 100mph.

For future readers, the symptoms are poor breaking, whining from the break booster in front of the steering wheel, a "sucking" sound from behind the drivers head (on LHD cars). To find it, I simply pulled the vaccum hose off the LH manifold. The sucking sound immediatly stopped indicating a leak into the vacuum system.

The T is behind the vapour filter. If you have the same issue, tie a piece of string to the lower end of the hose to stop it dropping out of sight when you take the T off

Now I have to find a new stupid 12-8-12 plastic tee. For the time being I've simply put a straight through on the brake boost side, hell, the vaccum canisters werent working anyway - they werent even connected

Two lessons here. 1, garage mechanics still don't know what they are doing - this started out as a loose manifold as far as they were concerned. 2, even if you spend $200k on a car, don't expect anything except cheap plastic connectors, and expect them to be buried where you cant see them.