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Service bulletin 04027

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10012652
Published by NHTSA2005-03-10
Manufacturer's number04027
Manufacturer's date2004-10-22
NHTSA componentENGINE AND ENGINE COOLING:EXHAUST SYSTEM

NHTSA's summary

EXHAUST SYSTEM DRONING AT 2000 RPM DURING COLD WEATHER. *EH

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Engine, Exhaust and emissions

Vehicles listed
ACURA MDX2004

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
DOR-M3J3F-072020-07-27. Service bulletin. These SKUs are Exhaust Manifolds with Catalytic Converters. The customer communication requested return of unsold inventory due to a loss of CARB certification. These SKUs can no longer be sold as they do not meet CARB standards, but parts on vehicles are not effected.
10062007-03-19. Service bulletin. TROUBLE SHOOTING B-CAN AND F-CAN DTC'S. *KB
060282006-10-26. Service bulletin. MIL COMES ON WITH DTC AND THE ENGINE RUNS ROUGHLY OR STALLS. *KB UPDATED 08-15-07. *KB
5052005-09-07. Service bulletin. ALTERNATOR CONDITION (NO OR LOW OUTPUT) DEALER VISIT REQUEST. *TT
5052005-09-06. Service bulletin. CRANKS WON'T START, IMMOBILIZER LIGHT FLASHES. *TT
011620052005-05-10. Service bulletin. ALTERNATOR CONDITION. *EH
011620052005-05-10. Service bulletin. OIL PUMP OR SPOOL VALVE ONLY OIL LEAKS. *EH
111620042005-05-04. Service bulletin. ALTERNATOR CONDITION NO OR LOW OUTPUT. *EH
111620042005-05-04. Service bulletin. OIL PUMP OR SPOOL VALVE ONLY OIL LEAKS. *EH
12032005-04-29. Service bulletin. UPDATING REPLACEMENT ECM/PCM SOFTWARE. *NM