I just had my fuel pump replaced on my '14 RLX. Took my car in for a minor maintenance and asked the service writer to have the technician diagnose a noise in the engine bay. It was a ticking noise unlike what the engine normally makes. I had heard it when I got out of the car while it was idling. Was told there is a service bulletin out for this item.

 

That must only apply to non Sport Hybrid models right? My service writer did not see any service bulletins for that when I had my car in for the dash lights issue I had earlier this week and last weekend. Forgive my ignorance, but how would a ticking sound in the engine bay have anything to do with a fuel pump? Fuel starvation? I would think the sound would be something related to the lifters (if our cars have those). Sorry I'm a little old school as I don't think we don't have push rods in the motor. Am I wrong?

 

It actually applies to all RLX, P-AWS and SH-AWD, MDX and TLX.....
From the Official TSB thread:

TSB 16-008 - High Pressure Fuel Pump Chirps was revised to include the 2017 RLX.

TSB 16-008 - High Pressure Fuel Pump Chirps
Applies To: 2014-17 RLX - ALL - ALL
2014 and 2016 RLX Hybrid - ALL - ALL
http://www.urvi.net/forumfiles/SB/B16-008.PDF
http://techinfo.honda.com/Rjanisis/pubs/SB/AH/B16-008/enu/B16-008.PDF

 

We would all be lost without you pgeorg! As usual you are our superhero. It is good to know that if we experience this noise, that there is a repair out there already. I wonder if that is a manufacturing, environmental, or end user issue that causes this chirping?

 

Thanks RLX-Sport Hybrid!

I believe its a manufacturing issue.....

 

From the TSB HPFP diagram, there's a cam in the fuel pump. Go figure.