I have a 2013 F150 six cylinder, with 90K miles. The belts squeaked and I had the serpentine and AC belts changed. I am amazed at how much better the truck is running. I wouldn't think that would make a difference with performance. What am I missing?
The squeak may have been triggering the knock sensor, knocking back
the timing which would definitely hurt performance.
I'm saying MAY - and it is about the only thing I , as a retired
mechanic, could think of that COULD cause it.
On Sun, 11 Aug 2019 12:07:50 -0700 (PDT), Michael
Is it really running better, or does it just sound better (tighter)? I
also have a '13 with about 93K. It doesn't sound bad at all. It's
been a really good truck. Living its life in the South helps a lot.
On Sunday, August 11, 2019 at 6:12:16 PM UTC-5, firstname.lastname@example.org wrote:
It's running better. Before, it kind of dragged when I stopped and started, but now it really hums and goes. These F150s are really great trucks. I used to always drive V8s, but the truth is I really just need a six to haul wood here and there.
I've only ever replaced a V-belt or serpentine belt
as a precaution - when it looked like it was aged-out.
I can't understand how a belt can do much slipping
without a whole-lotta-noise or failure ?
My only odd-ball and hard-to-diagnose situation - was an
intermittently squealing serpentine belt that was still in good
condition - tensioner was fine - it turned out to be a tiny
tiny < hot temp. mist spray > leak in the coolant reservoir !
When the engine heated up and built up a tiny bit of pressure
in the coolant reservoir - it sprayed onto the belt / pulley
and caused the slight slippage and noise ..
That's where I learned the trick to diagnose a squealing belt -
as opposed to a idler / alternator .. bearing noise.
When it's sitting there idling & squealing pour a tiny bit of
water - a teaspoon ish - over the nearest pulley -
If the squealing goes away immediately - gotta be belt noise.
If it was bearing noise - a few drops of water wouldn't have
that effect ..
ps : Clare one of the very few mystery problems
on my several olde Taurus Vulcan.
On Mon, 12 Aug 2019 16:39:50 -0400, email@example.com wrote:
Had the "mini-pisser" leak in the upper rad hose of my 1989 3.0 liter
AeroScare coming home from Huntsville one nasty cold blowing winter
night. Thankfully I had a jaclknife and a tool to fit the hose clamp.
Cut off about 5/8" of rad hose and put it back together - no more
leak. The water trick for checking belt noise goes WAY back - learned
that as an a pprentice back in 1969. On V belts a bit of soap in the
water helped - on serprntines that can either shut it up or turn the
sueal into a howl!!!!!
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