Adam187 New Member 11 Member For: 5y 3m 20d Gender: Male Location: Sydney Posted 29/08/19 04:04 AM Share Posted 29/08/19 04:04 AM Hey guys was wondering if anyone could help me I'm getting this strange noise like a rattle while under load at low rpm.. it disappears after a sec or 2 and it's more prominent when cold almost sounds like the catalytic converter took to exhaust shop he couldn't hear anything and didn't check inside because catalytic is welded on any ideas ? Link to comment Share on other sites More sharing options...
JETURBO ...JD TUNING ADELAIDE... Gold Donating Members 23,708 Member For: 16y 5m 28d Gender: Male Location: Adelaide Posted 29/08/19 04:18 AM Share Posted 29/08/19 04:18 AM More information buddy make,model,year,mods,kms,folder or a scruncher ? Link to comment Share on other sites More sharing options...
arronm Dropping a turd Gold Donating Members 9,520 Member For: 17y 1m 1d Gender: Male Location: Perth Posted 29/08/19 04:39 AM Share Posted 29/08/19 04:39 AM (edited) Automatic ?? Zf 6 speed. ? Does the car hunt (revs vary) when it happens ? Edited 29/08/19 04:41 AM by arronm Link to comment Share on other sites More sharing options...
Adam187 New Member 11 Member For: 5y 3m 20d Gender: Male Location: Sydney Posted 29/08/19 04:46 AM Author Share Posted 29/08/19 04:46 AM (edited) Stock Fg xr6t automatic 150km na doesn't hunt revs only makes the sound as I'm building speed from take off for a few seconds then stops as I go faster Exhaust could be touching something hard to tell or maybe gearbox issue first time owning a ford Edited 29/08/19 04:49 AM by Adam187 Link to comment Share on other sites More sharing options...
finnas Gold Donating Members 105 Member For: 14y 10m 16d Posted 29/08/19 06:39 AM Share Posted 29/08/19 06:39 AM If it doesn't increase or decrease with revs then hopefully its not rotating assembly. Loose header bolts, maybe? They will rattle the manifold at cold start coz of negative timing and disappear up in the revs. Harmonics etc. worth a look. Link to comment Share on other sites More sharing options...
BeerTurbo Donating Members 241 Member For: 6y 6m 19d Posted 29/08/19 07:43 AM Share Posted 29/08/19 07:43 AM (edited) in the day and age where every phone is a high powered video recorded, im still amassed people try to describe a noise using text. Make a video / post to utube / link video here? also I had a cat do a separate and it would rattle around at idle... but it was pretty much all idle, not just cold idle. whent he car was off if you tapped the cat you could hear it rattle. it was somewhat easy to diagnose. if old mates had the car up on the hoist and reckons its not the cat, id half believe em cause its easy to test. also if it is stock there not much chance the exhaust is touching, unless you have super bad engine mounts - then it would only touch things on high throttle loads. usuallys its something like the xforce 4 inch dumps that rub Edited 29/08/19 07:44 AM by BeerTurbo Link to comment Share on other sites More sharing options...
arronm Dropping a turd Gold Donating Members 9,520 Member For: 17y 1m 1d Gender: Male Location: Perth Posted 29/08/19 08:14 AM Share Posted 29/08/19 08:14 AM (edited) I had a rattle sound on a 6 speed XR 6 N/A I was working on last week. Would happen for a few seconds at about 1300rpm. Once higher it would disappear. After finding a minor amount of oil in the coolant header tank ( slight white sludge at the top) we have concluded the box has milkshaked and the noise is the converter trying to lockup Dead box. To late. Car has done 153k Edited 29/08/19 09:03 AM by arronm Link to comment Share on other sites More sharing options...
Adam187 New Member 11 Member For: 5y 3m 20d Gender: Male Location: Sydney Posted 29/08/19 08:42 AM Author Share Posted 29/08/19 08:42 AM I'll check the coolant ..sorry but the sound ain't loud enough to hear through a phone mate while I'm driving ..can't hear the sound at idle Link to comment Share on other sites More sharing options...
BeerTurbo Donating Members 241 Member For: 6y 6m 19d Posted 29/08/19 08:45 AM Share Posted 29/08/19 08:45 AM all good boss, if you get adventitious put your phone in the engine bay and hit record. also if its not loud enough to record its not loud enough to be a problem. Link to comment Share on other sites More sharing options...
Adam187 New Member 11 Member For: 5y 3m 20d Gender: Male Location: Sydney Posted 29/08/19 09:46 AM Author Share Posted 29/08/19 09:46 AM Tested it again doesn’t happen in every gear or rev range only happens if I’m at about 50 with foot of acceleration then I’ll give it abit of gas you can hear the vibration if that helps?? Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now