Quote:
Originally Posted by xFury
Had the "new" fuel pump installed today at Toyota.
No more chirp. I'm currently on Costco 91, which had the chirp before this new one.
Hopefully it's fixed, but I'ma give it a month or so before saying it's fixed.
2016 FRS
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Interesting you mention Costco. I've never had the Chirp, and used Costco's 91 octane -no ethanol blend in the past - along with other local brands here in Iowa.
A couple weeks ago I noticed that the Costco in my area switched to a 93 octane ethanol blend - so I filled her up.
When I pulled into the garage that day - I heard the Chirps for the first time. Next fill-up, I went back to 91 octane-no ethanol............and the chirp went away!
I don't think its necessarily the ethanol, but something in that Costco 93 is causing chirps.