Mystery Whistle
Long story short I’ve owned this 2003 Toyota Matrix 1.8L (1ZZ-FE) for the last 10 years. When I bought it, it had 66,000km now it’s sitting at 186,000km and the whistle is still and has always been there. Mainly only when accelerating harder or going up hills.
I recently replaced air filter hose, air intake manifold gasket, and upstream o2 sensor. No luck with whistle gone taken to multiple shops and no one seems to have an answer. Many have tried and failed, I’m open to any suggestions I will make it my life goal to fix this whistle.
u/Exact_Class9514 — 2 days ago