Windstar engine hissing on idle whooshing on rev.

[Anthony]

I have a 2003 Ford Windstar 3.8L V6 that started making a hissing noise after tune up and oil change. It’s got a low hissing on idle and makes a nice loud whoosh of air when its under throttle while moving or sitting parked. I checked all my hoses and vacuum lines. No dice there.

[video]https://www.youtube.com/watch?v=aTJVFVM9kCc[/video] Idle
Reving noise Reving

Hasn’t made the noise since I got the van a year ago, though it never was running the best. Any help is appreciated.

Topic

[college man]

Hard to hear the hissing. Check for vacuum leaks. more in this link.

http://www.ericthecarguy.com/faq/solving-automotive-performance-issues

[Anthony]

Thanks for the quick reply. I’ll check for vacuum links tomorrow. :cheer:

[Anthony]

Tried propane, carb cleaner, soapy water / snoop method, and diluted rubbing alcohol (to 90%). Hit every hose, all over the intake system, anywhere on the engine with a line on it and no idle change, stalls, or bubbles.

[college man]

check your pcv and hoses.

[Timothy Salomon]

I’ve heard Windstar have secondary air injection issues. Every Windstar at the junkyard has this valve on the front of the engine behind d the injector rail removed because the bushings go bad.
If you have a vacuum gauge, you might be able to check if manifold vacuum is lower than normal, and try pulling off hoses and plugging the lines to isolate the system with the leak.

[Anthony]

Thanks for the suggestions! I’ll dig deeper once I get back home. Currently out of town. I’ll keep you guys posted *fingers crossed that this is an easy / cheap fix* 🙂

[Author]

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