My Sti7 with PPP and no other performance mods (23000 miles) has just started making a weird resonance sounding noise at 4000-4250 rpm both on acceleration and de-acceleration through that band. The car still makes the noise out of gear? Anyone got a foggiest what it might be?
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Exhaust catching anywhere?
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Not that I can tell :-(
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Actually I forgot to mention, it may be in my mind, or could be the hotter weather but the car has seemed to be little less powerful over the last 2 weeks
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It's going to be less powerful in this weather, yes.
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resonance = heatshield, one of the many.
car will be slower in this weather, needs cool damp air for best performance... |
I thought about the heat shield but discounted it due to it being such a narrow rev band. The noise has gone once you hit 4.5K rpm.
[Edited by pmather - 7/25/2003 5:14:26 PM] |
I,ve got exactly the same problem with mine it comes in at about 3000 rpm and goes at 500 rpm later - it seems to be coming from the right hand side of the dash but not sure - will watch this post to see how you go on.
Ian |
Ian is yours PPP'd?
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I used to have the same problem but at 2500 RPM. It was the heat shield.
Les |
I get a rattle on my 03 WRX at about 2.5 to 3k revs. Other threads on here reckon it may be a solenoid. I think the turbo on yours comes on later so maybe it is this??
Have a search. Cheers Dave |
Use to happen on older imprezas when the brake pipes were vibrating against the bulkhead, probably been fixed if they are new 02s and 03s.
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