# Whistling noise when accelerating **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** rav4, toyota\ **Created:** [April 26, 2010, 9:48pm UTC](https://community.cartalk.com/t/whistling-noise-when-accelerating/48017 "2010-04-26T21:48:51Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![Mel\_Chris](https://avatars.discourse-cdn.com/v4/letter/m/ea666f/32.png) [@Mel\_Chris](https://community.cartalk.com/u/Mel_Chris)\ **Post date:** [April 26, 2010, 9:48pm UTC](https://community.cartalk.com/t/whistling-noise-when-accelerating/48017/1 "2010-04-26T21:48:51Z")
We just purchased a used 2008 Rav4 with 47,000 miles and it is making a whistling noise when over 40mph. The noise gets louder the faster it goes but noise stops when foot is off the gas pedal. Took it to my guys to have a look see and they mentioned dirty trany fluid but the problem lies in the transmission/differential. Took it to Toyota (b/c we have a warranty) they could not find anything wrong and they stated this noise is normal. Should we take it in for a third party or just turn up the radio? ---
**Author:** ![tardis](https://avatars.discourse-cdn.com/v4/letter/t/f0a364/32.png) [@tardis](https://community.cartalk.com/u/tardis)\ **Post date:** [April 26, 2010, 11:13pm UTC](https://community.cartalk.com/t/whistling-noise-when-accelerating/48017/2 "2010-04-26T23:13:20Z")
I can’t hear it from here, but it might be an exhaust leak. ---
**Author:** ![Mel\_Chris](https://avatars.discourse-cdn.com/v4/letter/m/ea666f/32.png) [@Mel\_Chris](https://community.cartalk.com/u/Mel_Chris)\ **Post date:** [April 29, 2010, 8:18pm UTC](https://community.cartalk.com/t/whistling-noise-when-accelerating/48017/3 "2010-04-29T20:18:05Z")
I made an appointment for a tranny flush and to check for exhaust leaks. Thanks. ---
**Author:** ![Joseph\_E\_Meehan](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/joseph_e_meehan/32/21_2.png) [@Joseph\_E\_Meehan](https://community.cartalk.com/u/Joseph_E_Meehan)\ **Post date:** [April 29, 2010, 10:58pm UTC](https://community.cartalk.com/t/whistling-noise-when-accelerating/48017/4 "2010-04-29T22:58:57Z")
You might also want to check for a leak in the intake. You can use a short length of garden hose as a stethoscope to help you find the source of the noise. I made an appointment for a tranny flush You should think about that one. Look for a transmission fluid change with a clean filter. It is better for your car and likely cheaper. Far too many of the transmission flushes are done to just flush the owner’s wallet. ---
**Author:** ![Wanderer1](https://avatars.discourse-cdn.com/v4/letter/w/2bfe46/32.png) [@Wanderer1](https://community.cartalk.com/u/Wanderer1)\ **Post date:** [October 10, 2010, 11:23pm UTC](https://community.cartalk.com/t/whistling-noise-when-accelerating/48017/5 "2010-10-10T23:23:37Z")
Did you ever find out what was causing this? We just bought a 2008 RAV4 (4WD) with almost the exact mileage (48,000) and are experiencing the same thing! The (non-Toyota) dealer told us it was the variable valve timing and that it’s a normal sound. But we test-drove similar RAV4s and didn’t hear the sound.