Land rover, continued they did the heat sensor test on radiator it was good it could sit all day idle and not overheat it won't blow hot air unless u hold the rpms 1500 for 10 sec the heat will start blowing only when sitting idle soon as I put it in gear and start driving the temp starts creeping to overheat I never let it get to the red never drove it when it got to the last normal line the fan comes on cause it's manual I pull it for it to engage sorry so long I need to figure this out asap:

Mike Butler

• 6674 Answers
• Posted on Nov 23, 2008

SOURCE: 2002 caravan, heater problems

That was a common complaint a few years back, due to the fact that the heater core is a little too much higher than the engine, which requires that extra push it gets when engine RPM's increase. One thing I did do on my Caravan was remove my hoses to the heater core, and use a small external pump with hoses to circulate C.L.R. through my core for a while, then let it sit with CLR in the core overnight.Next day I circulated it through again, both ways by reversing hoses, and then re-attached hoses, bled air out of system, and notice quite an improvement in heat at idle. Once cleaned out, the heater core allowed coolant flow through it better at idle. If your stumped by explanation, take it to an automotive shop, or a Rad shop, and get a quote on flushing that core out for you. I recommend the CLR, but it might be too time consuming for you , but a flush will probably show some noticeable improvement.

SOURCE: 1995 ford windstar overheat after replacing the thermostat

I had the same problem and it was the water pump, loosen the belt and check the pump for excessive play.

SOURCE: have two, first my front defrost does not get hot, or the heat does not get how unless I am driving the car, when it is idle it blows out cold air, but once I start driving it it blows out hot, but wh

My first challenge since I became member of this site! What does your temperature gauge tell you when this is happening? For the seat, take it off disconnect the harnesses and check the cables underneath, you have a short-circuit.

SOURCE: heater only blows semi warm air when i drive.

replace your thermostat and flush your system

SOURCE: I have bought a 99 land rover discovery and it has

Can your head gasket be blown? Only the combustion can have such high pressure.