When i have the heat on in my car, the hot air turns cold when im just idling. why is this?

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Answers:

417-1-maintenance-3.html

You may need a new heater core. Could be something else. Here's something to read:

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If your car crashes and your battery is destroyed. Will your on-star still work?

You probably need a new thermostat.

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what transmission will work in 96 ford taurus with a 3.0 engine?

yep thermostat is possible, could also be that your water pump is wearing out and not pumping water around the system like it should

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Need an exploded view of a eclipse transmission from a shop manual(not haynes )?

....or maybe you need to check the water level.

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Our 96 magna keeps cutting out while driving, can happen anytime driving on freeway or stopped at lights.?

Check your coolant level. If it's not low then your water pump is probably going out.

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What is the latest year model of a car or truck that an individual can legally remove the emission controls?

If it was the thermostat, your car would overheat. If it was the heater core, it would be leaking.

was told i need a transmission controller for 2002 neon price $565 for part, does this sound right?

I think you have a vacuum controlled air blend door in the ducting. This door, located in the ducting, directs heat over the heater core, the A/C coil, or a mixture of both. There isn't enough vacuum at idle, so the door is closing off the heater core. It is usually spring loaded to the cold side. Could be a one of the vacuum tubes of the diaphragm that pulls the door open.

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How to trouble shoot temperature gauge 94 GMC safari 4.3?

This is common in MANY cars. The problem is that the heater core is higher than the radiator causing an air bubble. to solve this problem:
Allow the car to cool, Remove the radiator cap, turn the heater controls to maximum hot, Have an assistant start the car & rev the engine to 1-1.5 thousand rpm. You'll notice the coolant level drop. This is because reving the engine circulates the coolant into the heater core causing the radiator level to drop. While your assistant holds the RPMs up; You can now TRUELY top up the coolant system. This should solve the problem.

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How will the car be affected without the coolant overflow bottle?

coolant level is most likely low. At low engine speed water pump does not flow fast enough to supply the heater core with coolant if the coolant is low. The method to top off coolant is different for different cars check your owners manual. If you don't have access to the info then top off with the engine running and the speed up is the next best way(don't open radiator when hot!).

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