new guy
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Joined: Nov 2004
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new guy
i have a 97 f150 4.6 ltr ,engine pinging when accelerating
and when coming to a stop rpm fluctuating below 500 and returns
to 550 constantly doing this check engine light on please help.
Edited to Lower Case
[
and when coming to a stop rpm fluctuating below 500 and returns
to 550 constantly doing this check engine light on please help.
Edited to Lower Case
[
New User
Joined: Jan 2008
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Hello & Welcome to FTE!
This will explain why your thread was moved.
https://www.ford-trucks.com/forums/s...d.php?t=300691
This will explain why your thread was moved.
https://www.ford-trucks.com/forums/s...d.php?t=300691
Senior User
Joined: Feb 2001
Posts: 223
Likes: 1
From: Long Island
david,
Pinging in the 4.6L is usually due to carbon build-up the Throttle Body and intake. The passeges from the EGR elbo to TB tend to get blocked with carbon.
The wacky RPM @ idle is most likely the IAC (idle air control valve) problem. Good chance it too is "gummed up"
Good Luck,
Bill
Pinging in the 4.6L is usually due to carbon build-up the Throttle Body and intake. The passeges from the EGR elbo to TB tend to get blocked with carbon.
The wacky RPM @ idle is most likely the IAC (idle air control valve) problem. Good chance it too is "gummed up"
Good Luck,
Bill
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