Let's diagnose the High Pitched Noise

efuseakay · 04-05-2010, 06:37 PM

Quote:

Originally Posted by TheWeatherman

I think they're still trying to find the most cost-effective fix.

They are pulling a Toyota... except this isn't a safety issue. lol

Vegitto-kun · 04-05-2010, 06:41 PM

I have a 09 but I have no problems with the noise.

but it WAS a demo car so maybe the dealership already fixed it

Silver37 · 04-06-2010, 05:29 AM

The problem is the ECM. There doesn't seem to be any official notification going out like a TSB, but they definitely have a fix for the G37....I just had mine fixed a few weeks ago. I had taken the car in twice before for the problem and they couldn't diagnose it. When I heard there was an official fix, I called the dealer and told him I understood there was a fix and asked him to investigate. Several weeks later he met with the regional rep and they agreed to order me the part and called me to install it. I would assume Nissan also has the fix ready to go, but you're going to have to pursue it..I would start with the dealer first, then go to Consumer Affairs if that doesn't work.

fitxpert · 05-01-2014, 11:21 PM

I had my ECM replaced and still experienced the whine. Did a little further reading and did a little testing and realized it's the THROTTLE BODIES! Here is how you can tell if the noise is coming from your throttle bodies or ECM.

Pop your hood.
Put the car in Neutral.
Set ignition to ON.
Roll your windows down.
At this point...it should be silent.
Now put the car into gear. I usually go with 2nd. You should hear the whine start right away.
Now put your ear near each throttle body and confirm. I could hear each throttle body whining.

I had my service manager convinced it was the ECM...and it turns out that wasn't the problem. Here is a video of the noise well. Car is in gear.

Throttle Body Whine

acmethod · 05-31-2015, 08:41 PM

Quote:

Originally Posted by fitxpert

I had my ECM replaced and still experienced the whine. Did a little further reading and did a little testing and realized it's the THROTTLE BODIES! Here is how you can tell if the noise is coming from your throttle bodies or ECM.

Pop your hood.
Put the car in Neutral.
Set ignition to ON.
Roll your windows down.
At this point...it should be silent.
Now put the car into gear. I usually go with 2nd. You should hear the whine start right away.
Now put your ear near each throttle body and confirm. I could hear each throttle body whining.

I had my service manager convinced it was the ECM...and it turns out that wasn't the problem. Here is a video of the noise well. Car is in gear.

Throttle Body Whine

I'm confused. My car makes the noise when I do the above. The link says TB noise, the vid says ECU noise.

Which problem do I have? Thanks.

DEpointfive0 · 05-02-2014, 12:29 AM

Thanks for bumping EVERY THREAD...

Your problem is NOT the standard ECM whine

DOOMMONKEY777 · 06-01-2015, 08:44 AM

None its normal sports car sound.

kenchan · 06-01-2015, 01:00 PM

huh... i guess just get an exhaust and nice HU to cover it up..

05-01-2014, 11:21 PM	#4 (permalink)
fitxpert Base Member Join Date: Sep 2013 Location: Tempe, AZ Posts: 34 Drives: 09 370Z White MT TRG Rep Power: 13	So...is this normal?? I had my ECM replaced and still experienced the whine. Did a little further reading and did a little testing and realized it's the THROTTLE BODIES! Here is how you can tell if the noise is coming from your throttle bodies or ECM. Pop your hood. Put the car in Neutral. Set ignition to ON. Roll your windows down. At this point...it should be silent. Now put the car into gear. I usually go with 2nd. You should hear the whine start right away. Now put your ear near each throttle body and confirm. I could hear each throttle body whining. I had my service manager convinced it was the ECM...and it turns out that wasn't the problem. Here is a video of the noise well. Car is in gear. Throttle Body Whine Last edited by fitxpert; 05-01-2014 at 11:23 PM.

05-02-2014, 12:29 AM	#6 (permalink)
DEpointfive0 A True Z Fanatic Join Date: Jan 2012 Location: SoCal Posts: 14,824 Drives: a lot Rep Power: 17153	Thanks for bumping EVERY THREAD... Your problem is NOT the standard ECM whine __________________ Do YOU want to know what/where I got my username from? ( Click to show/hide ) NSFW due to language:

06-01-2015, 08:44 AM	#7 (permalink)
DOOMMONKEY777 A True Z Fanatic Join Date: Sep 2010 Location: Crooklyn Posts: 1,014 Drives: 370Z 6psd-sport-pkg Rep Power: 22	None its normal sports car sound. __________________ Kids don't do Drugs, Drugs are bad, so let the professional druggies do Drugs for you. 537whp/496lb/tq@8-9PSI 93 octane

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04-05-2010, 06:41 PM	#2 (permalink)
Vegitto-kun A True Z Fanatic Join Date: Feb 2010 Location: USA Posts: 2,011 Drives: 09 370Z Rep Power: 264	I have a 09 but I have no problems with the noise. but it WAS a demo car so maybe the dealership already fixed it

04-06-2010, 05:29 AM	#3 (permalink)
Silver37 Base Member Join Date: Nov 2009 Location: US Posts: 21 Drives: G37S, Nissan Maxima Rep Power: 17	The problem is the ECM. There doesn't seem to be any official notification going out like a TSB, but they definitely have a fix for the G37....I just had mine fixed a few weeks ago. I had taken the car in twice before for the problem and they couldn't diagnose it. When I heard there was an official fix, I called the dealer and told him I understood there was a fix and asked him to investigate. Several weeks later he met with the regional rep and they agreed to order me the part and called me to install it. I would assume Nissan also has the fix ready to go, but you're going to have to pursue it..I would start with the dealer first, then go to Consumer Affairs if that doesn't work.

06-01-2015, 01:00 PM	#8 (permalink)
kenchan A True Z Fanatic Join Date: Aug 2009 Location: N/A Posts: 76,801 Drives: N/A Rep Power: 141522	huh... i guess just get an exhaust and nice HU to cover it up..