Question about 2005 Ford Five Hundred
On cold mornings I got to turn my car on to let it warm up. I turn on heat and set up 80 degrees and have defroster on. 15 minutes later when I go to get in the car the window has not defrosted and it is still cold in the car. It also smells likes gas in my car. However, once I start driving the car in about 10 minutes the heat , etc will begin to work. what is wrong and will this be an expensive fix?
Th e car is over 8 yrs.old and how many miles? The coolant been changed out after 4 or 5 yrs. of say 15,000 mi. per yr.?
What I'm getting at is your thermostat could be only partially doing its job or corroson or build-up (scummy deposits)could be interfering with your electrical signals from sensors.
Drain it,flush it and replace thermostat,then refill it. don-ohio (:^)
Posted on Jan 06, 2013
There are several things which come to mind. You have 2 complaints. A gas smell and a cold blooded vehicle.
Starting with the temperature problem. My initial concern is whether the thermostat is weak, but also that the automatic controls may be inoperable and working against you. The car is suppose to go into a temporary "cold start routine" which increases the RPM and makes the fuel rich. (This could contribute to the gas smell)
After the Temperature sensor and O2 sensors warm up, the idle is suppose to drop and the fuel mix should lean out. If the engine remains at high idle, the water pump will work faster with the engine spinning faster. Sometimes there is not a direct 1 to 1 ratio between the heat generated by the motor and the RPM versus the cooling produced. An idling engine may warm up faster than an engine running at higher RPM.
Another problem may be the Defroster setting. There are Thermal switches which are suppose to cut off the Electric Radiator cooling fans. When the Defroster is activated, some cars are built to spin the A/C compressor in the Winter. But the Electric Radiator cooling fans may also switch on as part of the A/C system. This would super cool the radiator at a time when you least want it. Check to see if the cooling fans are activating when the Defroster is turned on.
There can be 2 Temperature switches in your car. One would send the signal to kick out the "cold start routine" and the other would work the guages or indicator lights.
The O2 sensors can have heaters in them or they can just be slow. If you leave the engine idling like you do, they could foul out and be sluggish to warm up.
If running the Temperature at 80 degrees causes an additional 5 minutes of warm-up time, you may be better off setting it for say 72 and having it work sooner.
The thermal sensors are not that expensive. Work on a cold engine when changing them. Note what I said about your rich fuel mix contributing to the smell.
Please rate my info.
Posted on Jan 05, 2013
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Posted on Jan 02, 2017
Replace the thermostat, if that does not cure the issue you have a slight head gasket leak. I am a retired Ford dealer tech and this is what I have found causes this issue.
Posted on Dec 02, 2008
there is a blend door and a selector door in the HVAC system. These are run by vacuum or servo motors. Sounds like this little motor is your problem. Hope this helps you.
Posted on Jan 19, 2009
no heat is probably low coolant or bad thermostat,although you have fog and smell ! the heating and cooling systems are closed systems the only way the windows fog is the coolant is hot and steams inside the car due to some leak inside the heater core box. as well as the smell being present. Now it is possible that a little leak has occured where the coolant supply or return line connects to the heater core and is running into the car which is running onto the core and creating steam and smell. hopefully it is a easy clamp tighten fix for you.
Posted on Jan 13, 2011
Testimonial: "thank craigss1013 this was very helpfull"
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