Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and beginning April 20th, 2021 (Eastern Time) the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.
Trending News
Car Chirpy sound only under acceleration in gear - Toyota Vitz?
Hi all,
So my Toyota Vitz makes a 'chirpy' sound when under acceleration/strain in gear. in Neutral nothing. when travelling at a constant speed nothing and when gentle acceleration nothing.
When accelerating hard, just of idle revs and I think when cold is when its most exagurated.
Similar sound to this:
http://www.youtube.com/watch?v=L6-MudHNCGU
Any ideas - it doesn't sound like a belt slipping squeek its even more 'chirpy' than that video....
2 Answers
- 7 years agoFavorite Answer
It only makes the sound while accelerating under load -- it's "pinging", or "preignition". Run the fuel tank almost empty, then put in 10 gallons of higher grade fuel -- maybe 92 octane instead of standard 87. The pinging almost certainly will go away, proving that pinging is the issue. Solve by either having ignition timing retarded a few degrees, by putting a cooler range spark plugs, or just don't push it so hard. Or keep buying the better fuel.
Source(s): old hot rodder
