My engine sounds like it's pinging, only more muffled. Just started doing
this yesterday. From just off idle(1200 rpm's) during even light
acceleration and on the road whenever more throttle is needed. I don't think
it's a fuel issue as I'm halfway thru a tank of gas and this just started.
No SES light or any other symptoms that I can think of.
Can anyone shed some light on this?
There is a bulletin reguarding spark knock caused by water intrusion at the
rear bank knock sensor, #02-06-04-023A-(06/14/2002)
Be sure to follow the instructions properly for applying the RTV or you
will create bigger problems
Sorry I don't have more info, but I have the same truck as you, 2000
though. I have dealt with an engine ping since day one (2001, 19k
Miles). I have run premium fuel, changed fuel filter and pump and
replaced every knock sensor in the engine. It still pings. It's
worse at about 42mph Trans in OD and very light acceleration. You can
hear the pinging inside the cab. I took it to 3 different dealers and
none of them can fix it. They tell me it's normal. One dealer said
that since the pistons were forged, excessive knock won't hurt
anything. Another dealer said the premium fuel I used screwed up the
computer and that's what caused it. I don't have the answer and I
don't know how truthful the dealers are, but I am all ears from this
As usual, Thanks Doc. I had the PROM flashed once already (1.5 years
ago & dealer recommended) and that made the problem even worse. When
I complained to the dealer, they said they can not reflash the PROM
with an older revision and I am stuck with the firmware upgrade. Does
that make sense?
Thanks again. I have never run any of the fuel "additives" as I
figure they are worthless. You seem to stand by Restore and this
techron stuff. The techron is about $7/bottle, but if it reduces the
pinging, then all is well. Thanks again for the advice.
FYI, I had a service mech ride with me with a tech II analyzer plugged
in. When the pinging was the worst, the tech II showed 28 degrees
timing advance. Seems high to me!
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