Why does my air conditioner cut out when I accelerate?

Typically this occurs due to a bad vacuum check valve under the hood. During hard acceleration the AC door system loses vacuum, causing the doors to default to the windshield. This check valve keeps this from occurring. It is located under the passenger side of the hood.

Where is the air conditioner located under the hood?

It is located under the passenger side of the hood. If you want to have it replaced, consider YourMechanic, as a certified mechanic can come to your home or office to diagnose your AC system and make the necessary repairs.

When does air conditioner cut out when going up hill?

Q: Air conditioner cuts out when accelerating or under pressure going up hill. I noticed today that whenever traveling and accelerating like going uphill for an extra length that my a/c will quit blowing and as soon as I level off or the need to accelerate levels off it will resume blowing. My car has 197000 miles.

What causes engine hesitation and stumble problems in Z Cars?

1 Introduction Every couple of months a Z car owner somewhere cries out “Help, my car is suffering from hesitation/stumble: what could be wrong?” . These types of problems can be a pain to track down, and if the problem is an intermittent one, it can be months before the cause is found.

What does 225 psi tell me about my a / C system?

Condenser may be blocked. 225 PSI / 80 PSI = It is likely that the expansion valve is opened too wide (not the case if your A/C system has an orifice tube) Also, you could have too much refrigerant in the system. 200 PSI / 70 PSI = There is a blockage somewhere in your system either before or at the expansion device.

When to flush the a / C system in a Chevy Tahoe?

Refer to Corporate Bulletin Number 01-01-38-006C for more information about A/C system flushing and filter installation procedures. An A/C system flush is not to be done unless prior authorization is given by the GM Area Service Manager (in Canada, the District Service Manager).

What kind of engine cuts out when accelerating?

An expert who has achieved level 1. An expert that has 1 follower. I own a 2001 F-150 5.4 triton with nearly 300,000 miles and it started cutting out when i accelerated and idled a little rough but took it into Ford dealership and I had bad coils and has been running great since!! You can’t post conmments that contain an email address.

Why does a / C stop blowing through vents as I accelerate?

I was sitting stopped, turned on the A/C and it started blowing nice and cold as normal. After i started accelerating, the flow through the vents slowed and finally stopped. As it stopped, i heard the compressor kick into overdrive (like it does when it is cooling the air before blowing it through the vents right as you turn it on.)

When does the a / C stop working in a Ford?

Ford E-Series Questions – A/C quits working when engine is under load. – CarGurus A/C quits working when engine is under load. When accelerating, my A/C stops blowing and only sometimes resumes blowing when a fairly low speed is attained. At highway speeds, it practically never runs.

When does Ford Explorer hesitate during acceleration inspection?

Ford Explorer Engine hesitates during acceleration Inspection at your home or office. Our certified mobile mechanics come to you 7 days a week between 7 AM and 9 PM. Our certified mobile mechanics can come to you now. Ford Explorer Engine hesitates during acceleration Inspection costs $89 on average.

What’s the average price of a Ford Explorer?

Ford Explorer Engine hesitates during acceleration Inspection costs $89 on average. It can be frustrating for any driver to expect certain acceleration from their vehicle only to find that the vehicle seems to be hesitant while speeding up.

Why does my AC defrost when there is no vacuum?

What is actually happening is the mode control for your AC and heat is losing its vacuum source. When you switch the knob for defrost/vent/floor etc, engine vacuum is what moves the mode doors to achieve the airflow from the blower motor to where you want it. The default position is defrost/floor when there is no vacuum.

Why does the a / C blower slow down when the RPMs go up?

Why does the a/c blower slower down when the rpms go up c… When the truck sits and idles the blower works fine but when your driving and start to pull a hill the blower slows down when the truck is at about 3000 rpms nothing really is coming out of the vents as soon as you let off the accelerator it picks back up to normal

Why does the AC stop blowing when I accelerate?

Once no longer accelerating, a/c begins cooling again. … read more hi I HAVE E350 PASSENGER VAN,AND HAVE SOME AC PROBLEM. HOT AIR blows WHEN at idle,BUT ONCE THE VAN MOVES COOL AIR START BLOWING.

Why does my Ford RV stop blowing cold air?

That is my V10 Ford rv that stop blowing cold air from the ac going up good size hill. This is a big problem when traveling in the summer months. The engine has lots of excess power and I want to eliminate the “Normal operation.

Why does the air stop blowing through the vents?

As it stopped, i heard the compressor kick into overdrive (like it does when it is cooling the air before blowing it through the vents right as you turn it on.) would this occur due to the air not being cool enough and it trying to cool it instead of blowing semi-warm air through the vents or is this possibly some sort of vacuum problem?

Why does my Ford Expedition not have air conditioning?

What are common reasons my Ford Expedition has air conditioning problems? While there are a variety of reasons your Ford Expedition air conditioning won’t work, the most common 3 are a refrigerant leak, an electrical climate control issue, or a problem with the air conditioning compressor.

What does it mean when your AC is turned off all the time?

There are periods where the AC is turned off, such as when the proper temperature has been reached, and the pressure is adequate. However, if the system is cycling on and off very frequently or more rapidly than normal, it could be a sign that the cycling switch is not functioning properly. 2. Unable to cool the car

Why does my air conditioner turn off after 15 minutes?

If there’s something wrong with your AC that makes it shut off after just 15 minutes, it’s usually one of these issues: Unit is overheating. This often means there is simply a buildup of grime inside the compressor unit, but it could also mean there’s a refrigerant leak or have other causes. Faulty thermostat.

Why does the a / C quit working on my Ford E-series?

One end of the tee goes to the reservoir and the other through a grommet through the firewall to your AC controls. The system is designed to hold vacuum whenever there is a high load demand (Climbing a hill, passing or taking off from a stop with a heavy load.)

Why is my air conditioner not working in my Ford Expedition?

But my Fixed A/C stopped working again I took it to a new mechanic who after alot of trouble shooting found the problem. Which was again the Clutch Fan that was replace 10 days ago by the bad mechanic.

What are the factors affecting the AC load on the engine?

Factors affecting the AC load on the engine include climatic conditions, cabin conditions, compressor speed, difference between the climatic (outside) conditions, and overall efficiency of the AC system etc.

What should my AC low side pressure be?

When the engine is on and the AC is on high, low pressure readings should be around 30 psi and the high pressure side should be about 250 psi depending on your car. The correct reading will display once the clutch engages and the gauge stops cycling.

Which is an important load in an AC system?

In the case study of Wagon R Car, the engine, exhaust, and reflected radiation loads may be neglected from consideration. On the other hand, the direct and diffuse radiation loads are important AC loads that tend to give rise to the cabin temperature.

Why is my air conditioner engine surging so much?

If the air conditioning is not performing well, the engine might be surging because the system is undercharged or overcharged. If it is overcharged, the load imposed by the compressor will be excessive.

What happens to the a / C vents while accelerating?

While accelerating the A/C vents in dash cut out. The vent goes to either defrost or the floor. I took this van to a mechanic, they smoke tested the vacuum lines.

What happens to the a / C vents in a Ford E250?

I have a Ford E250 4.6V8. While accelerating the A/C vents in dash cut out. The vent goes to either defrost or the floor. I took this van to a mechanic, they smoke tested the vacuum lines.

When does the AC compressor cut off at WOT?

The AC compressor cut off is at WOT (pedal to the floor) only. Does the airflow continue and get warm, or does the airflow stop or switch to the defroster outlets? If the airflow stops or switches, then you have a problem either with the vacuum check valve to the AC system, or a vacuum leak after the check valve.

While accelerating the A/C vents in dash cut out. The vent goes to either defrost or the floor. I took this van to a mechanic, they smoke tested the vacuum lines.

I have a Ford E250 4.6V8. While accelerating the A/C vents in dash cut out. The vent goes to either defrost or the floor. I took this van to a mechanic, they smoke tested the vacuum lines.

Why does my air conditioner slow down when I Turn on the fan?

That’s when you get a change in airflow. When the door doesn’t operate properly, it may sound like a Blower motor slows down when accelerating Sometimes, when a vacuum motor defaults due to loss of vacuum, and the system uses two vacuum motors to switch modes, it may seem as if the fan is losing speed.

When does a 2003 Ford F150 blow on defrost?

Ford F150 Lariat 2003 ford f150 a/c blows on defrost when… 2003 ford f150 a/c blows… 2003 ford f150 a/c blows on defrost when i accelerate works fine in the driveway no matter how much i accelerate. the vacuum lines on the control head appear to all be hooked up and in good shape.

Why does AC stop blowing out the defrost vents?

After installing a new blower fan motor the ac would only come out the defrost vents. The factory vacuum check valve is very hard to get to. So i bypassed it. Now it is working like it should and ac comes out the dash vents. I do not have a vacuum reservoir installed i will have to see if i will need to add it later.

Why does AC come out the dash vents?

The factory vacuum check valve is very hard to get to. So i bypassed it. Now it is working like it should and ac comes out the dash vents. I do not have a vacuum reservoir installed i will have to see if i will need to add it later. Don’t forget to like, comment, share and subscribe to my channel. Loading…

Why does the a / C turn on after the engine is turned off?

It turns the a/c off in case the outside temp is below freezing to protect the compressor from damage. It also turns on both cooling fans in case the engine is overheating. This is why the fan turns on and may run after the car is turned off. With the temp sender being the possible cause I decided to replace it.

Why is the AC cold in my Chevy Tahoe?

From buying research to owner support, join 1.5 MILLION GM Truck Enthusiasts every month who use GM-Trucks.com as a daily part of their ownership experience. I have a 2001 Chevy Tahoe with the 5.3L engine. I have an odd issue with the AC and was hoping an expert can shed some light on the problem. When the truck is driving, the AC is ice cold.

When does the a / C stop blowing cold air?

Drove it around for about 10 mins and the car stayed at 210 on the gauge (as it should) and the a/c worked fine. This lasted for 2 days and then it went back to dropping the water temp, killing the a/c.

Why is my air conditioning not working on my GMC Sierra?

While there are a variety of reasons your GMC Sierra 1500 air conditioning won’t work, the most common 3 are a refrigerant leak, an electrical climate control issue, or a problem with the air conditioning compressor.

What causes a GMC Sierra 1500 to stall?

But the stable idle won’t last long, it’ll idle low and rough. Mpg has decreased drastically and give off a rich smell when running. 308 people found this helpful. Bad hesitation off of the start, pumping the gas pedal helps to get her going. Pushing the pedal hard well bog it out and almost stall. 290 people found this helpful.

Why does my air conditioner cut out when I accelerate?