1992 Jeep Wrangler "heat blows hot driving fast" Questions

heat range or even air temp) speed, range say over 40mph. for some vacuum range. load range. ( induction air flows, calcs) Throttle angle, (not wide open throttle or not idle.) No DTCs set. The ECU is

...blows out cold air. Check and top up the coolant level. When an engine heats up fast and there is no heat from the heater it is low enough on coolant that it doesn't circulate through the heater ...

...heat blows warm and the temp is up around 200. As soon as you start to drive it the temp drops down to 100 and blows cold air. Any suggestions? have you chg. any thing lately like thermostate? added ...

...heat or AC blows at all, thoughts? check fuses scan the PCM or get it serviced. HVad dead. blower motor dead ,silient.? even on HIGH SPEED? blower must not be dead, this is first. if you drive fast ...

...heat assist(webasto)sometimes work and sometimes not, although the temperature is about 2 degrees.I also have a problem with the heating (passenger side blows cold air and the driver side slightly ...

...hot almost red lining.no fluids are leaking, no antifreeze smell inside, windows do not fog up when heat is on but heat is blowing cold air, fans are working. is this just a thermostat problem or ...

...heat, however, when I stop at a light for a few minutes it blows cold air. What's up? Your coolant level is probably low. When you are driving, the water pump turns faster and pumps the coolant into ...

HOT THE RADIATOR,ENGINE BLOCK HEATER CORE NEED FLUSHING OUT.IF WATER PUMP WEEP HOLE LEAKING REPLACE WATER PUMP, FAULTY WATER PUMP WILL CAUSE ENGINE TO OVER HEAT.REPLACE RADIATOR CAP MAKE SURE YOU HAVE

...hot. 180F or more and must hold there. 2: fan must blow or no heat until driving fast. (simple yes) 3: the heater core must get hot, feel the 2 hoses at core, are they both very hot? yes good, one is ...

...hot coolant to the heating system . also if its low the motor will over heat fast..... If the system is full then you may have other problems.. such as 1) bad thermostat 2) bad radiator cap ( not ...