#1 How hot does it get with out the heater on?
#2 sounds like pinging, my truck does the same when
accelerating in too high of a gear (under 1000 RPM's).
I don't think your valves are floating, unless you are
running the engine over 6000 RPM.
#3 look at your MPG! I wouldn't question any thing.
<< I have two problems with my 4.7L truck as of my trip today.I was driving
home from college and I have about 2-2.5 hrs drive time.I was driving 50 mph
@ 1800 rpm's with the heater running full blast to keep the motor under 190.
I observed an average mpg figure of 28.6 mpg on this past tank of fuel,and
was getting 28-30 on the trip today.My engine is still running hot and I got
an engineer for a 4.7L on the phone today at DC after throwing an absolute
shit-fit over my new truck running too hot for me to drive without the
heater.He said that the 4.7L has a 195 thermostat in it, as we all know.He
then told me that if the temp guage ever reads higher than 195, that
something is abnormal or bad wrong, i.e.-idling with the a/c on with the
grille close to a wall,towing a trailer that is bigger than the dakota is
rated for up an abnormally large grade,etc. I am going to pour in the
radiator relief and hope that helps.2ND problem-I was going to pick up my
brother after the truck had been shut off for 1.5 hrs and I used a 2nd gear
start like I usually do, and I had the valves to float on me for the first
time ever.Anybod else's valves rattle/float on takeoff? DC has declared both
of these issues to be serious problems and asked me to take it to the
nearest dealership before I drove it ANYWHERE else and that somebody from DC
engineering would be in touch with all their service people trying to figure
out what the hell is wrong with brand-new f^&*ing 5800-mile truck!!! I wish
they would buy the SOB back and let me be on my way!! Sorry for the long
post, but I had to tell somebody about this shit, thought ya'll might be
interested, >>
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