Did the blower motor upgrade and fan upgrade (blows like a hurricaine).
New thermostat (asked the parts guy for one that will let the engine run a little hotter and keep me warmer).
Adjusted the vent flap (by the passenger foot).
Flushed and refilled the radiator.
I travel highway speeds mostly (65-70 mph), and am wondering if I am overcooling my engine, the temp guage barely registers. I have an '84 CJ-7 with the AMC 150 engine. I have a less than perfect body that is moderately drafty in these conditions, and the air that comes out of the handler is warm (at best).
I remember that with an older car of mine, we would restrict flow to the radiator in the winter. Anyone else have this problem? Where should the temp guage register? What temp is this (in degrees)? How do I find out an actual degree for what temp I am running?
when i first got my jeep i did the carboard infront of the radiator thing, it helped. that was before the evil rust monster had its way with my jeep, now even if i had 350* air coming outta my vents, it still wouldnt get warm. driving at highway speeds with a 4banger with something infront of the radiator might be a lil dangerous, if you do it keep an eye on the temp gauge.
[COLOR=darkgreen]"character is doing the right thing even if nobody is looking"[/COLOR]
I Know exactly what youre going thru. ( when I was attached to Ft Lewis and made trips to Alaska, i learned all about heating a CJ)
>>>>>and am wondering if I am overcooling my engine,
first, relax- its IMPOSSIBLE to "overcool" an engine ( if you ever do manage to do it- email me and give me about 90 days to publish it and we will be the richest people in the galaxy)- the heat generated by an IC engine comes from the combustion and friction of the moving parts- the water circulating acts as a heat exchanger and 'wicks' heat from the engine
>>>>>>the temp guage barely registers
this is most likely a bad gauge, bad sending unit or weak connection- the ONLY way to be certain of the temp is to put a validated thermal probe in the radiator and record readings from the coolant, then do the same for the engine. ( thats how cooling coeffecients are calculated)
>>>>>Where should the temp guage register?
on "paper'- the "ideal" temp of any machine is to operate at 100º F above AMBIENT with a absolute MAX of 250º F ( beyond that, nasty things happen to tempering etc)- a good temp is between 170º and 225º ( this is a broad range and thats about the extreme upper limit)
here are probable causes of your condition( any or all may apply)
1)possible restriction of flow to the core
2) wicking of heat from the lines( anything uninsulated looses heat)
3) the body itself acting as a heat sink( lack of insulation)
4) introduction of cool air constantly
5) lack of circulating air in the crew compartment( creating an air dam situation)
solution- the laws of physics cant be changed so the fix is to eliminate the above- here are some things ive done which make a jeep as warm as a car
1) put pipe insulation on the heater hoses
2) go on a seek and destroy mission for air entrances
3) modify and put the LARGEST core you can find in there
4) undercoat the tub
5) put insulation and carpet inside
6) install 2 air returns in the vehicle near the rear( I have done PVC pipe with a suction manifold and 1 with 2 vents/blowers to outside)- that creates air movement to rear