Question about 2000 Ford Taurus

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A/C runs great after start up and engine is warmed. Then within 15-20 minutes the cold air becomes warm and humid

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Either there is air in the system or the system needs to be recharged.

Posted on Jul 17, 2009

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1 Answer

AC blows warm air whil idle or at first start


U could be run on eco a/c where the engine is using the power until it has extra to spare. Warm at start could be simlarly that there is now cold air yet and has to "make" cold air to distribute when ready. See if u can find a setting for reg use. cheers, ps eco saves dollars/euros.

Sep 05, 2012 | 2005 Audi A4

2 Answers

I have a 2006 Freestar with a 3.9 Engine . When it is cold it has a miss when i step on it. But it gets better when it starts to warm up. Almost seems like a spark plug miss


Spark Plugs ---change at 70,000 miles
O2 Sensors--change at 100,000 miles (front 2 only)
Gas Filter--every 3 years/30,000 miles
Air Filter ---every 3 years/blow off once every year
MAF Sensor---Clean once a year or more often

Ignition Coils--- most definitely will go bad,at
least 1 a year. (Any Check Lights or Codes ? )

When cold, it isn't in closed-loop, and runs on
Long Term Fuel Trim--not on O2 Sensors ,until
warm

Let it warm up at least 4 minutes in cold weather,
go light on the gas for first 2 miles

Feb 22, 2011 | 2006 Ford Freestar

1 Answer

Petrol 2litre starts ok but sometimes engine stops when driving and its cold or damp, after warm no problems


I'm not familiar with the Renault specifically, but most vehicles have a method of dealing with carburetor icing. When the weather is cool and damp and the air is sucked into either a carburetor or throttle body, the air pressure changes.
Inside the intake manifold there is a significant vacuum condition. That sudden drop in air pressure causes the air temperature to drop significantly and can cause humidity in the air to condense on any available surface. While the rest of the engine is quite hot, the air intake can be quite cold.
After running for a period of time, an ice ball can develop on the inside of the air intake; when that occurs, the engine will be incapable of proper operation and can stop running, at which point the heat from the engine will diffuse, warming the intake and melting the ice.
To solve that problem, most vehicle manufacturers use a carburetor de-icing system that basically consists of a tube that runs from around the exhaust manifold up to the air intake. By the time any ice can start to build up on the inside of the air intake, the outside of the exhaust manifold has become quite warm, and any air that passes the exhaust manifold is heated enough to prevent the icing problem.
So the short answer is, make certain that the tube is in place, provided that Renault's used that system.

Feb 06, 2011 | Renault Le Car Cars & Trucks

2 Answers

The heater blows out cold air only.


check the coolant level in the radiator it may be low
and starving the heater core

Jan 10, 2010 | 2000 Chevrolet Monte Carlo

1 Answer

2000 buick century idles fast when cold I let it run for couple minutes turn off start back up and idles just fine


Is the car idling faster than it has in the past when cold? The car is designed to idle a little faster than normal during warm up, to warm the engine quicker, and to keep it running. The fuel/air mix richens, (more fuel in the mix than normal), during start up conditions, and then as the engine warms, it should idle down to normal. Have you allowed it to continue its fast idle to see if it idles back down? Your post indicates that you turn it off and re-start to prompt the car to idle down. You have electronic fuel injection. The system adjusts to the prevalaint conditions to give you the perfect mix regardless of the condition it is presented with. It gathers input from a series of sensors that detect engine temp, outside temp, humidity and air pressure, to deliver the mix it needs. Often, when the mix is off, it is a result of a faulty sensor. This can be detected by running a fault code diagnostic check. You can have this performed for free at most national parts chains such as advance or auto zone. Other factors can cause an improper mix, such as dirty or clogged injectors, and/or a dirty air filter. Good Luck! I hope that you find this to be very helpful!

Dec 04, 2009 | 2000 Buick Century

2 Answers

Car gets warm and starts hesitating on acceleration


Hi,
this could be something in the fuel pump. As the cold motor draws more fuel, it may just be just ok for the engine, but after it is warm, it draws less and may "suffocate" it that way. Same goes for air filter, take a peek if it is not ready for replacement. Has this happened suddenly, or has it occurrend during a long perion of time?

Oct 15, 2009 | 1999 Mercury Cougar

3 Answers

Sounds like it's going to die until it warms up...


Katrina, the fact that your car runs (like a beauty) when shes warmed up, indicates a fuel air mixture problem when cold. Your car is equipt with electronic fuel injection. This system utilizes a series of sensors that detect conditions such as engine temp, outside temp, humidity and air pressure to determine what mixture is perfect for the prevailing condition. For example, on a cold start, the sensors should know that the engine is not up to the proper operating temperature and provide more fuel and less air, (a richer mixture), until the engine warms, this emulates a choke on a vehicle equipt with a carburator. The problem either lies in the sensor itself, or the brain that interprets these inputs to decide what fuel/air mixture to deliver.

Sep 18, 2009 | 2001 Mazda Tribute

1 Answer

2003 vw jetta wolfsburg bogs on early acceleration


Don't know if it applies to your diesel but most later gas engined vehicles have a 'cold start' valve that supplies additional fuel to the fuel/air mix along with boosting the idle speed until some warming of the engine is sensed.

Nov 14, 2008 | 2003 Volkswagen Jetta TDI

1 Answer

A/C appears to shut off


The most likely cause is the ac compressor cycling switch stuck, this is a very common problem, it may never happen again, but I would replace it.

Sep 08, 2008 | 2003 Honda Accord

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