Help Needed - Buzzing sound!

NSXTC-MN

NSXTC-MN

Registered Member
Joined
2 May 2014
Messages
82
Location
Minnesota
I'm sorry for posting up such a noob question, but I'm stumped and frankly I'm not that mechanically inclined.

I just purchased a 2002 NSX and it was delivered to my house today by the shipping company. When the driver went to start it and pull it off the truck, the battery was dead. No big deal, he jumped it and it started up fine. I let the car run for several minutes and it's been starting & running fine since. I've also put the battery tender on it for now just to get it fully charged.

Now comes my question. Since putting the car in the garage I've been hearing a buzzing sound coming from the engine compartment. It almost sounds like a "pager" going off with the "vibration buzzing" sound. It goes off about every 2:15min, and it only buzzes for like 3-4 seconds.

It's definitely coming from the engine area, and it seems to me like it's coming from under the plastic coolant tank near the firewall.

Any ideas???
 
Evaporative emissions control[edit]

"EVAP" redirects here. EVAP may also refer to Evaporation.

Evaporative emissions are the result of gasoline vapors escaping from the vehicle's fuel system. Since 1971, all U.S. vehicles have had fully sealed fuel systems that do not vent directly to the atmosphere; mandates for systems of this type appeared contemporaneously in other jurisdictions. In a typical system, vapors from the fuel tank and carburetor bowl vent (on carbureted vehicles) are ducted to canisters containing activated carbon. The vapors are adsorbed within the canister, and during certain engine operational modes fresh air is drawn through the canister, pulling the vapor into the engine, where it burns.

Leak detection systems[edit]
ESIM - Evaporative System Integrity Monitor
NVLD - Natural Vacuum Leak Detection
LDP - Leak Detection Pump
 
What he said ^^

Briank said:
Evaporative emissions control[edit]

"EVAP" redirects here. EVAP may also refer to Evaporation.

Evaporative emissions are the result of gasoline vapors escaping from the vehicle's fuel system. Since 1971, all U.S. vehicles have had fully sealed fuel systems that do not vent directly to the atmosphere; mandates for systems of this type appeared contemporaneously in other jurisdictions. In a typical system, vapors from the fuel tank and carburetor bowl vent (on carbureted vehicles) are ducted to canisters containing activated carbon. The vapors are adsorbed within the canister, and during certain engine operational modes fresh air is drawn through the canister, pulling the vapor into the engine, where it burns.

Leak detection systems[edit]
ESIM - Evaporative System Integrity Monitor
NVLD - Natural Vacuum Leak Detection
LDP - Leak Detection Pump
Click to expand...

Brian K is more an engineer in our NSX's than I ever will be, but I think you can rest assured this is a normal "cool-down" signal from your 2002 and newer NSX-T. I hear it frequently from both of ours (2004 and 2005 Suzuka built). In fact, after 431 miles (both) this past weekend.... returned from ESTFest Ontario we had a symphony of these "groans" while I enjoyed an afterglow in the garage. Somewhat sounds like a load-leveling system.
I have resolved that it is perfectly normal.

Not to worry! :smile:
 

Similar threads

M
NSX shut off after cold start, then would not restart
Replies
6
Views
462
MikeNSX92
M
Wild Turkey
Standard charging voltage compatible with AntiGravity battery while installed in NSX?
Replies
7
Views
494
D Baggins
D Baggins
B
HELP: What exhaust is this?
Replies
0
Views
202
Butters
B
vf2ss
Help turning TCS light off after ABS upgrade
Replies
1
Views
297
Old Guy
Old Guy
RYU
Please help on causes for fuel pressure drop
2 3
Replies
51
Views
4K
Old Guy
Old Guy
Back
Top