horn-like noise coming from my engine
01-09-2015, 03:32 PM
#1
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horn-like noise coming from my engine
This is my first ford truck, I bought a 97 F-150 Lariat 4.6 and I love it! My only gripe is
I have read around on the internet and this forum and none seem like the right description or the same noise. This noise only happens when i am slowing down without my foot on the gas. As soon as I give it some gas, it goes away. I can also put it in park and sometimes it happens, sometimes it doesnt. I live in Texas and its only 30-45 degrees, so its not too cold.
Any help or links to other topics that you can share would be appreciated! I apologize if this has been solved elsewhere, but I couldnt seem to find a solution.
I have read around on the internet and this forum and none seem like the right description or the same noise. This noise only happens when i am slowing down without my foot on the gas. As soon as I give it some gas, it goes away. I can also put it in park and sometimes it happens, sometimes it doesnt. I live in Texas and its only 30-45 degrees, so its not too cold.
Any help or links to other topics that you can share would be appreciated! I apologize if this has been solved elsewhere, but I couldnt seem to find a solution.
01-09-2015, 04:55 PM
#2
Senior Member
Check the PCV valve, they can make crazy noises sometimes. If you replace it, get a Motorcraft.
Last edited by JCR 56; 01-09-2015 at 07:44 PM.
01-09-2015, 05:12 PM
#3
Common problem, it's the idle air control valve (IAC), the intake tubing/airbox is amplifying it.
That's why it goes away when you step on the gas, it's no longer idling.
That's why it goes away when you step on the gas, it's no longer idling.
01-09-2015, 05:16 PM
#4