I own a '98 Jeep Grand Cherokee Limited. My heat last winter worked great, but this winter it's refusing to heat up the vehicle like it used to. It it all digital, I will set the heat to 85 degress but yet still feels as if the air isn't very warm being blown out. I have a full antifreeze and I don't know what to check or how to fix the problem. Any advice would help, thanks!
2007-12-10 07:53:27 · 5 answers · asked by Carson S 1 in Cars & Transportation ➔ Car Makes ➔ Jeep
maybe the flap is stuck or the heating coil is bad. Or your thermostat is stuck open and the car isn't heating up properly.
2007-12-10 08:07:27 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Your Cherokee does not have a heating coil, it has a heater core. And it's one if not the single cheapest parts to buy and most expensive part to have installed on your Jeep. Basically the entire dashboard must be removed to install a replacement heater core. Before going down that road check a few things. Does the temp gauge show the cooling system is getting up to normal operating temperature? If not you could have a defective thermostat(a fairly simple and cheap repair), if yes after the engine gets hot touch the heater hoses, they should be hot. If yes then hot water is circulating through the heater core(a good thing) and you probably have a problem with blender door in the heater or the heater temp control If no then the heater core or the heater hoses are clogged and will need to cleared or replaced(a bad thing). Hope this helps a little.
2016-05-22 21:46:36 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Sounds like you have a model with automatic temperature control. It's possible (amongst other issues) that the temperature sensor (in the instrument panel) has gone bad, or possibly the entire heater control has failed. If the system isn't sensing the proper interior temperature or the heater control isn't responding properly to the input of the sensor, you're going to get the problem you experience.
Of course, you could also have a plugged heater core or a bad engine thermostat (that should be evident by the temperature gauge in the instrument panel).
Good luck.
2007-12-10 10:48:09 · answer #3 · answered by acermill 7 · 0⤊ 0⤋
Jeeps have a heater core bypass that works off of vaccum. You may just have a vaccum leak or the bypass is plugged with junk from the anti-freeze. The By-pass is cheap and easy to try. It's at the firewall where the heater core hoses comes to the firewall.
2007-12-12 03:04:37 · answer #4 · answered by loonatic72 6 · 0⤊ 0⤋
Heat core could be clogged up also
ed
2007-12-11 07:47:44 · answer #5 · answered by clubbjr1 2 · 0⤊ 0⤋