pocketbusXB

just recently when i gas it and drive it makes this weird noise almost like whistle noise like a little whiz dont knoe what it could be just started happening. i did juss install tvs u think that might have affected it. also my idle is kinda weird it idles at about 6 or 7 hundred but then here in there like after every minute it would rise for sec to 1 and go back down like a mini rev is this normal?

fr130

The whistling sound is probably the timing chain. It also whistles when you let go of the accelerator and cruise down to a slower speed. I like the sound though, it's almost like having a turbo without the turbo...hahaha.

More info can be gathered here:
https://www.scionlife.com/forums/vie...t=timing+chain

Milhamscion

do u have a CAI? Could be the induction noise.

CBSIMONSEZ

If its not the CAI, then you may have a ground loop problem, and your whistle/buzz may be through your audio/video system.

pocketbusXB

yea im thinkin its a ground problem too since i juss installed new tvs and dvd player and subwoofer. hmm what should i do? get better ground kit?

XBman

hey maybe a window is rolled down just a little and when u go faster itll do it lol just an idea?

Chrno

go to a audio store and pick up a ground loop, it takes away engine noise, its somting calld ground noise, engine noise what ever they wanna call it, jus ask a rep and they'll know what to get you, down her in san jose its about 4 to 6 bucks, plugs into ur RCA cables and bam ur set no more grund noise good luck

-mark

pocketbusXB

alright cool i'll go do that thanks!

Sciomodr

I worked as an installer/sales in an audio video store when I was an undergrad. I've yet to see a factory radio that comes with a ground loop problem (the whining sound that varies with engine RPM).

That sound is typically from an aftermarket amplifier that doesn't have a very high impedence input, the kind that accepts both line level (RCA) and speaker level inputs from the same point--read cheap stuff.

Save your money. It should be perfectly clear whether the sound is coming from your speakers or not. Try turning it on in your driveway. Radio off. Put your head by either front speaker. No sound there right?

Also there seems to be a lot of people recommending a ground strap upgrades. They will work for certain things. But these cars are for the most part new and very well maintained/cleaned. When your cars become rusting hulks underneath is when you should really be looking at ground straps. A car company isn't going to blow their rep right out of the box by saving three cents on a wire.

Mike

pocketbusXB

hmm. . . but it only happens sometimes usually if i sit and have tvs on for a long time then the noise comes back and gets a higher pitch when rpm raises its not speakers i dont think kuz i even turned everything off and i could still hear it