Durango-PCM
1999 DURANGO ENGINE GOES DEAD - PCM - it is the same
problem, summer approaching, warm weather, the PCM gets hot, and
the engine goes dead. It is incredibly inconvenient, under the sweltering
sun. I learned about the solution from reading all the posts. I feel
sorry for people, and I, being under the Dodge dealership's mercy,
or rather, financial torcher.
#1 The problem is the faulty PCM design and/or soldering and/or inferior circuit
board component. I found the best price on a remanufactured PCM at a website
before or during the winter months, but I misplaced it. Now that the heat is
here, I have to find it. The cost is about $250, with you mailing back the core
PCM. When I find the website, I will post again, with it's web address. Until
then, or to find out what I have found out, for the site's address for getting
the Durango's PCM, I will post to www.jumpsquid.com/durango-pcm
or this might look better, http://www.jumpsquid.com/durango-pcm
The other problem with the Durango is the a/c cooling, and in concert with that,
the engine cooling. The exterior a/c radiator is rather large, completely covering
and in front of the engine's radiator.
When the a/c radiator gets clogged with junk, bugs, dirt, etc. and with it completely
covering the area of the engine's coolant radiator, the air flow, hence cooling
is always comprimised; bad design, in my opinion.
I have heard of, read of, Durango owners burning up their engine's oil with the
constant hot temperatures, then the engine freeze. That is bad.
As one AutoZone long-time employee, advised me against buying a thermostat with
too low of a temperature rating, 160 F, I think,,, he said, '... those V-8s like
to run hot, ... if you keep it too cool, it will mess with your fuel efficiency,
...' .
I don't think so, with the huge potential disaster of possible burning-up and
freezing an oil eating hot engine, I prefer and reccommend to go cool. There
are obvious heating design flaws with this engine and I think that no engine
should be fooling around with coolant temperatures near 200F. Any engine causing
the coolant to boil in the cooling system, is headed for disaster.
As it is, right now, out in my driveway, I cannot let the Durango sit there and
idle, with or without the a/c, on. It will eventually burn off all the coolant,
then the oil, and then freeze.
#2 So, I guess it is sort of good that the Durango does stall from the faulty
PCM. Maybe this is telling me that I need to conquer the engine coolant problem
first.
....la la la, this is getting long,,,
so, back then, last year, I removed/disabled the engine thermostat. I cut-out
the center of the thermostat, and replaced the clear-for-coolant-flow metal thermostat
mounting ring.
A high speed electric cooling fan should be put in front of the sandwiched? radiators.
A meticulous cleaning of the radiators, would be very important to do (taking
care not to damage the a/c or engine radiator fins (leakage-then disaster)).
I plan to do this, cleaning.
#3 The third main problem that I can think of is: the weak a/c preformance.
I read somewhere that there is or might be a valve to stop the coolant flow to
the heating coil/a/c air-cooling radiator,,, aka-evaporator, area. Supposedly
the coolant flow to this compartment is not really blocked when you want it cool
in the cabin. I haven't researched this yet; I don't know if a simple turn valve
exists. I do think that halting the flow of coolant to the heater core would
be a great help with cooling the cabin.
I found an even better supplier. The best deal is found... next page
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