# 2003 Toyota 4Runner - Knock sensor **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** toyota\ **Created:** [March 28, 2019, 3:22pm UTC](https://community.cartalk.com/t/2003-toyota-4runner-knock-sensor/137390 "2019-03-28T15:22:32Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![DeborahByrd](https://avatars.discourse-cdn.com/v4/letter/d/858c86/32.png) [@DeborahByrd](https://community.cartalk.com/u/DeborahByrd)\ **Post date:** [March 28, 2019, 3:22pm UTC](https://community.cartalk.com/t/2003-toyota-4runner-knock-sensor/137390/1 "2019-03-28T15:22:32Z")
I have a 2003 4Runner with 209,000 my mechanic says it needs a knock sensor. Is this worth replacing at $2500.00!! ---
**Author:** ![VOLVO-V70](https://avatars.discourse-cdn.com/v4/letter/v/8e8cbc/32.png) [@VOLVO-V70](https://community.cartalk.com/u/VOLVO-V70)\ **Post date:** [March 28, 2019, 3:30pm UTC](https://community.cartalk.com/t/2003-toyota-4runner-knock-sensor/137390/2 "2019-03-28T15:30:05Z")
I guess I am jealous , I don’t have my own mechanic . Seriously the key here is a second opinion . At 16 years old and 209000 miles this thing would have to look and run like new before I would spend 2500.00 on it . I would look at Kelley Blue Book for value and then probably just trade it in. ---
**Author:** ![pyrolord314](https://avatars.discourse-cdn.com/v4/letter/p/6a8cbe/32.png) [@pyrolord314](https://community.cartalk.com/u/pyrolord314)\ **Post date:** [March 28, 2019, 5:31pm UTC](https://community.cartalk.com/t/2003-toyota-4runner-knock-sensor/137390/3 "2019-03-28T17:31:02Z")
Any time you have an estimate that big I would always get multiple estimates. That being said, when I checked on Repair Pal [https://repairpal.com/](https://repairpal.com/) it gave me an estimate between $445-$2563 depending on the engine and how many of the sensors need to be replaced. ---
**Author:** ![DeborahByrd](https://avatars.discourse-cdn.com/v4/letter/d/858c86/32.png) [@DeborahByrd](https://community.cartalk.com/u/DeborahByrd)\ **Post date:** [March 28, 2019, 5:45pm UTC](https://community.cartalk.com/t/2003-toyota-4runner-knock-sensor/137390/4 "2019-03-28T17:45:26Z")
Thank you ! Well it’s my mechanic at Goodyear who always services it! He says it’s a great truck and could probably go for another 100,000 miles if this is fixed🤷🏽‍♀️ ---
**Author:** ![DeborahByrd](https://avatars.discourse-cdn.com/v4/letter/d/858c86/32.png) [@DeborahByrd](https://community.cartalk.com/u/DeborahByrd)\ **Post date:** [March 28, 2019, 5:46pm UTC](https://community.cartalk.com/t/2003-toyota-4runner-knock-sensor/137390/5 "2019-03-28T17:46:31Z")
Thank you! I’m going to look into another opinion as well! ---
**Author:** ![VOLVO-V70](https://avatars.discourse-cdn.com/v4/letter/v/8e8cbc/32.png) [@VOLVO-V70](https://community.cartalk.com/u/VOLVO-V70)\ **Post date:** [March 28, 2019, 8:00pm UTC](https://community.cartalk.com/t/2003-toyota-4runner-knock-sensor/137390/6 "2019-03-28T20:00:34Z")
> [@DeborahByrd](#): > > Well it’s my mechanic at Goodyear Can mechanic and Goodyear go in the same sentence ? ---
**Author:** ![DeborahByrd](https://avatars.discourse-cdn.com/v4/letter/d/858c86/32.png) [@DeborahByrd](https://community.cartalk.com/u/DeborahByrd)\ **Post date:** [March 28, 2019, 10:56pm UTC](https://community.cartalk.com/t/2003-toyota-4runner-knock-sensor/137390/7 "2019-03-28T22:56:40Z")
Be nice, ya know I’m a woman 😫 ---
**Author:** ![Mustangman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mustangman/32/44130_2.png) [@Mustangman](https://community.cartalk.com/u/Mustangman)\ **Post date:** [March 28, 2019, 11:01pm UTC](https://community.cartalk.com/t/2003-toyota-4runner-knock-sensor/137390/8 "2019-03-28T23:01:16Z")
He is not disparaging you… but big chain stores don’t have such a good track record employing good mechanics. We usually recommend independent repair shops for that reason.