Question about 2000 Jeep Grand Cherokee

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When i turn on the fan/heat there is a sweet smell and white smoke spraying inside the vehicle, also making the windshield greasy and abstructing view?

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Your heater core has failed. Either disconnect both heater hoses and connect them to each other with a short piece of pipe, or have it replaced right away before you overheat the engine from coolant loss.

Posted on May 12, 2010

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1 Answer

White smoke from air vents while ac was on,greasy film on window while defrost is on/heater coil?


Yes. The heater core is leaking bad. The white smoke is the coolant and steam. Be sure to add water to the radiator before you burn up the engine.

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Could be a couple of things. If it smells sweet you may have a leak in your heater core. If it smells burnt it may be you heater fan is worn out. Does your fan make abnormal sounds?

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Windscreen keeps misting when car is parked


Is it fogging up when you use the heat or a/c? Is it fogging up after sitting outside on a particularly dewey night?

An easy fix and one to try first is turning the temperature gauge over toward heat, and setting the directional controls to defrost. Up the power on the blower for a moment. The warmer air will usually clear up a foggy windshield in seconds on a chilly or even not-so-chilly morning. The condensation on the glass needs a change of temp in order to evaporate. Sometimes you can get the same effect by using outside air to circulate through your car's blower system. Most have a way of circulating either inside-car air, or outside-car air.

If the glass fogs when you're driving down the road and have the heat on, or the a/c - do you smell something sweet or see white smoke coming out of your air vents? If so, you could have a faulty heater core. I wouldn't imagine this is the problem on such a new vehicle, but it could still malfunction.

Of course, if you're trying to wipe this fog clean and it won't go away, maybe you've got someone smoking in the car and leaving a film on the glass. It would take a lot of smoking to make the windshield look foggy though.
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How do i clean egr valve on my mzazda 323f hatchback 1999


if it was your EGR valve there would be a code. does the white smoke has a sweet smell. that is a head gasket problem. if it does not smell sweet try a tune up

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check the coolant level, if level is good, replace the thermostat, the old thermostat could be stuck open causing a no heat issue because the vehicle may run lower than operating temperature If there is moisture build up on the inside of your windshield and a sweet smell present inside the vehicle replace the heater core

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Smoking with sweet smell


White smoke sweet smell. Sounds like Antifreeze evaporating..check your radiator and hoses, as well as your heater core. It is hard to fully answer a question without a hands on inspection, kind of like me asking you over the phone if you like my new tie I am wearing..

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On a 2000 jeep grand cherokee what does it mean if the heater smokes, smells like antifreeze and window fogs up when heater is on?


It is not smoke though it appears so. It is thick heavy steam from a coolant leak in your heater core in the cabin area. It will smell very sweet if it is a typical glycol based antifreeze, and the windows will fog up as the hot coolant enters the cabin area of the vehicle. Primarily on the inside of the windshield. The cure is that your going to have to replace the heater core as it is leaking. Do this soon because if it ruptures completely you will have a major mess on the floorboard of your vehicle. Coolant is also poisonous to humans and animals if ingested. The heater core will be a little pricey as will the labor to replace it. Good luck. I guarantee you it is the heater core leaking.

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If it doesn't smell like sweet then you most likely got a bad tank of gas. Just to be safe keep an eye on your engine temp. and coolant levels.

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Is it smoke? Or is it steam? If it's really smoke, it will smell like burning wires and you have an electrical short somewhere. You're going to have a fire unless it's fixed.
My guess is that it's probably not smoke or you would have already had a fire.
With that said I'm going to say that it's steam in which case your heater core (which is a small radiator located under the dash) is leaking coolant and the resulting steam is rising through the vents. The steam will have a sort of sweet and yes, a steamy smell to it. It will also leave a funny film from the radiator coolant coating the inside of the windshield.
The heater core should be replaced if my assumptions are correct.

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1st, the fuse location is marked, what is the 20 Amp fuse for? 2nd, did the smoke have a nauseating sweet smell to it? If it smells like described it is the heater core leaking, coolant steam looks like smoke.

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