Owners of 2007-08 Honda Fit models may come into your store with a complaint of a gurgling-type noise from under the dashboard at idle, under light acceleration or during deceleration. One likely cause for the noise, reports American Honda Motor Co., is an airbound heater core.
Bleeding the core should eliminate the condition immediately. Here's the procedure:
- Start by loosening the radiator cap.
- Next, start the engine and allow it idle until the electric cooling fan has cycled on and off twice.
- Now turn the ignition off and carefully remove the radiator cap.
- Fill the radiator with coolant until it reaches the base of the filler neck, then add coolant to the reservoir until it aligns with the MAX mark.
- Install and tighten the radiator cap, then allow the engine to cool to ambient temperature. Once it does, check the coolant level in the reservoir. It should be down near the MIN mark.
If it didn't drop, check for a leak or a bad radiator cap. If the level did drop, fill the reservoir to the MAX mark. To complete the fix, go on a road test to verify that the gurgling noise has been eliminated. If it hasn't, repeat the bleeding procedure.
"Factory Fixes" is written by Jim DePalma, a 30-year veteran of the auto repair business who has served stints as a service manager, parts manager and ASE-certified technician. His column provides vehicle manufacturers' authentic factory technical service bulletins (TSBs) that have been condensed for easier reading. Mr. DePalma advises that techs always check with a dealer or repair information system for the latest revisions before starting to work on a vehicle. He can be reached via email at [email protected].