Scooby555Chris

hey guys...got a noise under load....sounds like a drone, rattle, whistle type noise , can compare it to when heater motor bearings die and it makes that noise...

under load....starts around 2500 rpm then worst at 3500rpm...
doesnt do it when driven on ramp...had it to 100mph plus on ramp!
doesnt do it really when u just sit there and rev he rup..

worst at 70mph 3500rpm on motorway..u cna paly tunes with the throttle..

it def aint...cambelt rollers, tensioner, w pump, alt, power steering, any loose bolts on engine, brake pipes on bulkhead...
had car to bits, fitted new parts and checked others..

and its a non turbo 98 sport...

any ideas gratefully received....even the scooby techy said theres something there, but couldnt put finger on it...

regards chris


[Edited by Scooby555Chris - 1/26/2004 6:12:43 PM]

zhastaph

I'm not quite clear on the description of your noise and I see it's a non turbo, so I don't know if this will help.

I changed the DP on mine, shortly after that mine started making a tfff tfff tfff tfff noise in the background when the engine was under load only. I was always convinced the exhaust was blowing someplace, but on a standstill with the bonnet up I could rev the nuts off it and could never get it to do it.

Anyway, few weeks back I decided to remove the DP to wrap it, and sure enough one of the nuts between the DP and the turbo had come almost completely undone and it had been blowing like a bugger.

I reckon the reason it only done it on load was cos of the way the engine rocked when it was pulling.

Scooby555Chris

thanks for replying..
its hard to describe...like a high pitch whine whistle

everyone who goes in the car with me says its not serious and its somehting resonating...i have had my exh system off, looked at heatshields etc but not much luck...

have bad vibes about something more serious

next step do same as u heat wrp the zorst and see how i get on

thanks for help...any more theories welcome.

chris

Jolly Green Monster

iTrader: (4)

I two had exactly that happen.. when I next took the downpipe off there was a nut missing and one had stripped the thread and had to be cut off..

The gasket was buzzing..

JGM

Trem

iTrader: (3)

My air con compressor makes a whining noise.

Scooby555Chris

kewl, i'll be removin the front down pipes soon...

thaks guys, let u know how i get on..

any more theories welcome of course.

hope it sorts it, gettin on mi nerves now...

nom

If the 'volume' is load related, it's likely to be gases trying to escape where they shouldn't, i.e. exhaust leak