last night i was pushin the talon a bit, well when i pulled into my driveway i could hear a high pitch whine from the ecu when the key was out of the ignition. The ecu is new so i dont understand why it would be making noises. anyone else have this happen? also when i hear it if i go and put the key in the ignition turn it to the on position, then back off the whine goes away...im lost

Mine use to do the same thing, but it quit after I installed the Megasquirt.

I can hear a small whine till the ECU shuts down, it stays powered up for a few secs after the you shut the car off.

Originally posted by Star Turbo Talon
I can hear a small whine till the ECU shuts down, it stays powered up for a few secs after the you shut the car off.

yeah same here...but after like 2 sec the whine is gone usually. its more of a linear sound. dunno what yours may be..

same. even with new ECU, so I dont believe it signifies failure.

They all do that.

my old one didnt, like this seems louder than normal, ill keep an eye on it the next couple of days and see were it goes will keep you guys updated

you didnt buy the ECU from a terrorist did you? Could be a bomb.

Originally posted by Star Turbo Talon
you didnt buy the ECU from a terrorist did you? Could be a bomb.

Try taking one through security at O'Hare. Boy. Was that fun. :rolleyes

The chemical analyzer: EXPLOSIVES DETECTED! EXPOLOSIVES DETECTED! All flashing that shit on a giant red screen. People all over staring at me. I'm standing there, barefoot, holding my pants up by hand since I had to take off my belt, and having to explain to the high school drop out in charge of our national security that it's a computer out of the engine bay of a car. "See? It says Mitsubishi right there!" I had to explain this to the choads running the x-ray machine. I had to explain this to the choad who did the swab test for explosives. I had to explain this to his supervisor. I had to explain it to his supervisor. Then, I looked up at the surveillance camera and explained it to big brother as well.

They took my boarding pass AND my wallet, but I after I signed a paper promising not to blow up the airplane, they gave them back. In a way, I was a bit disappointed. :wary

Thanks to Cas for doing such a stand up job of cleaning his ECU. :thumbsup

Originally posted by donnyb373
my old one didnt,

I'll guarantee it did, you just never noticed.

The ECU does all kinds of stuff after you pull out the key... I believe one of the things it does is check the oxygen sensor heater circuit.

I can't remember where I read it but a while back I heard that it makes that noise because the ECU is hot and its cooling down or something.

What is that buzzing noise from under the hood after the car is turned off (especially after long or hard driving)?

This is perfectly normal. The sound is the ECU going through a diagnostic mode and also cooling down.

Found taken straight from the 2GNT mainpage FAQ I guess I was half right.

All of mine have done that.

If you're really worried about it, spend the next year going to metal concerts, and hanging out near the speakers.

iv already spend alot of time this year at static-x and kitty concerts so im good...lol, but yea i havnt heard it since the other night so im assuming its normal

Mine does it, always.

yea mine hasnt done it lately so i guess im fine