Quote:
Originally Posted by rice_classic
Sometimes it's there, sometimes it's not. I've ran 3 tanks without Ethanol, still got the "chirps" at the same frequency and randomness as with E10. With E10 (and E0) I would go entire trips/days with no chirping and then it was back the next day.
I don't think there's accurate or sufficient enough data to determine if ethanol has any part in it whatsoever. The same thing can be said of Octane level as chirping reports are made in Australia, the UK and Japan; all with "supposedly" better fuel.
I'm ready for someone, anyone to surmise a hypothesis regarding the chirping that isn't fuel related. It might be temperature related. I can more narrowly track the occasions on which it occur to temp then I can fuel type. It almost never happens when cold/startup/first days trip but almost always occurs after long driving and stop/go traffic.
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I have posted this on page 39:
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1. Take it in for an oil change. Had mine around 1100 miles and I have not heard it since.
2. Call Kearny Mesa Toyota/Scion and ask for Chuck - he's their Lead Technician. Toyota is working on this issue and soon will issue a TSB.
3. Here's a good site that you can check:
http://www-odi.nhtsa.dot.gov/cars/pr.../tsbsearch.cfm
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I have been using Chevron 91 after their initial tank of gas. Had the chirps all the way up to my first oil change. After the oil change, I have not heard since. Here in San Diego, we recently had a heat wave reaching 99 - 110 degrees and never heard a thing. Try an oil change if you have not done so.