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HELLO, I'M NEW HERE.
LOOKED THROUGH THE ENTIRE SITE FOR SOMEONE WITH MY
PROBLEM AND FOUND NONE.
MY 1999 RANGER 2WD 3.0 HAS A NOISE COMING FROM
NEAR PASSENGER SIDE VALVE COVER, VERY DRY HARSH
SQUEAL. SERP AND PULLEY ARE NEW.
I HAVE 162,000 MILES ON THIS TRUCK WITH NO
SERIOUS PROBLEMS - YET
ANYONE KNOW WHAT THIS COULD BE?
you may have nailed it about the IAC valve,
of course now its being quiet, but I checked
out IAC valves in general and my truck has
shown some other IAC symptoms intermittently;
not starting on first crank, then a 300-400 rpm
idle and stall. theres also some variation in the
idle speed so I am going to get a new valve.
Only 162k and you're still on your first IAC? Seriously, I have 194k on my '98 4.0L supercab and am on my third. First change was due to the dreaded "squeal" and the second was due to the squeal and idle problems. My wife's 2001 Explorer with 4.0L doesn't squeal but sometimes will be a hard starter. A sharp rap with a block of wood on the manifold next to the IAC clears up the problem for quite awhile. Will replace it when the weather is better.
I think it may have been replaced by ford at about 90k
along with mass air sensor, egr. a few things "went"
at that time, and I had to split the cost with ford because
not all was covered under my extended warranty.
Im going to get a new one now.
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