BMW 328is Car surges when air conditioning is on Inspection at your home or office.

Our certified mobile mechanics come to you 7 days a week between 7 AM and 9 PM.

Estimate price near me

Service Location

Customer Ratings

(10)

How A Diagnostic Works

Instantly book a certified mobile mechanic to come to you

Mechanic diagnoses the problem and quotes necessary repairs

Your vehicle is ready to go

Fair, upfront & transparent pricing for all services

Our certified mobile mechanics can come to you now.

Customer Ratings

(10)

Car surges when air conditioning is on Inspection Service

How much does a Car surges when air conditioning is on Inspection cost?

On average, the cost for a BMW 328is Car surges when air conditioning is on Inspection is $95 with $0 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
1996 BMW 328isL6-2.8LService typeCar surges when air conditioning is on InspectionEstimate$114.99Shop/Dealer Price$132.49 - $145.62
1999 BMW 328isL6-2.8LService typeCar surges when air conditioning is on InspectionEstimate$94.99Shop/Dealer Price$112.52 - $125.67
1998 BMW 328isL6-2.8LService typeCar surges when air conditioning is on InspectionEstimate$94.99Shop/Dealer Price$112.52 - $125.67
1997 BMW 328isL6-2.8LService typeCar surges when air conditioning is on InspectionEstimate$94.99Shop/Dealer Price$112.48 - $125.60
Show example BMW 328is Car surges when air conditioning is on Inspection prices

For most of us, turning on the AC on a hot summer day is a relief. Cooled air fills the cabin and you’re able to relax and drive comfortably. However, if your car surges with the AC on, then there’s definitely a problem that needs to be hunted down and repaired.

How this system works:

First, understand that this problem isn’t tied to just one system – it’s a combination of different things. When your AC turns on, it puts a load on the engine (the engine is responsible for turning the compressor, which builds pressure in the system, which allows low-pressure, gaseous refrigerant to be turned into high-pressure liquid and used in your cooling system.

When the engine is put under a load by the AC system, the car’s computer automatically attempts to compensate for that by adjusting the idle. If there is carbon buildup within any part of the system, including the idle air control valve, throttle body, or possibly even the EGR valve, it can cause surging. The car’s computer essentially miscalculates the amount of power necessary, and ends up overshooting, leading to a surging engine.

Any problem with the AC system can also exacerbate this condition. For instance, if the system is low on refrigerant, the compressor will kick on more often, causing the surging to increase in frequency (if not in intensity).

Common reasons for this to happen:

Carbon Buildup: A number of engine components are subject to carbon buildup over time, and this can place a significant load on the engine. When the additional load of your AC compressor is added, it causes the computer to miscalculate and increase idle speed too much. Common sources of carbon buildup include the IAC valve, the EGR valve, and the throttle body.

  • Low Refrigerant in the AC System: If your AC system is low on refrigerant, it will make the compressor cycle on more frequently, increasing the load on your engine.

  • Failing AC Compressor: If your AC compressor is beginning to fail, this can also add to the surging problem.

  • Bad Belt: One often overlooked cause of a car surging with the AC on is actually a worn compressor belt. If the belt is stretched or worn smooth, it can slip during operation. This places significant strain on the engine and the AC system. Replacing the belt often eliminates the surge, and ensures better AC operation.

  • Bad AC Cycling Switch: The AC cycling switch controls the compressor cycling pattern. Over time, it can go bad. When this happens, it will place a significant load on the engine and can lead to surging.

  • Overfilled AC System: While low refrigerant can cause problems with your AC and engine surging, an overfilled system can cause the same problem. Refrigerant must be “just right” or you will experience a number of different problems.

What to expect:

Our professional mobile mechanic will come to your home or office to inspect the engine and the air conditioning system. The mechanic will then provide a detailed inspection report that includes the scope and cost of the necessary repairs.

How it's done:

The mechanic will inspect the AC system, as well as the vehicle’s engine. A test drive may be necessary if the surging only occurs when the car is in drive. The mechanic will check the car’s refrigerant level, as well as other possible causes, such as the AC cycling switch.

How important is this service?

If your engine is surging while the AC is on, it’s a sign that there’s something wrong. Driving without the air conditioner might solve it at least temporarily, but this is only a short-term fix. The actual problem must be addressed. One of our professional mechanics can inspect and diagnose your problem, and then provide a repair that ensures your engine runs smoothly and that your AC system works correctly.

Fast and easy service at your home or office

Backed by 12-month, 12.000-mile guarantee


Meet some of our expert BMW mechanics

Real customer reviews from BMW owners like you.

Excellent Rating

(10)

Rating Summary
10
0
0
0
0
10
0
0
0
0

Jerimiah

19 years of experience
328 reviews
Jerimiah
19 years of experience
BMW 328is L6-2.8L - Heater Blower Motor - Las Vegas, Nevada
I would recommend Jerimiah to anyone in need of a professional mechanic.

Patrick

32 years of experience
369 reviews
Patrick
32 years of experience
BMW 328is L6-2.8L - AC is not working - Las Vegas, Nevada
After he did his work he did take the car for a test drive and when he returned I ask him what he thought .....he answered " I am confident that the problem is resolved" and I have to agree with him....the problem is resolved, thank you Patrick

Jose

17 years of experience
154 reviews
Jose
17 years of experience
BMW 328is L6-2.8L - Other Inspections - Las Vegas, Nevada
Jose appears to be what you call "the expert" you have been looking for.....

Vladimir

10 years of experience
214 reviews
Vladimir
10 years of experience
BMW 328is L6-2.8L - Battery - Sacramento, California
He was very polite and seemed to know exactly what he was doing, I would definitely hire him again anytime!

Excellent Rating

(10)

Rating Summary
10
0
0
0
0
10
0
0
0
0
Number of BMW 328is services completed
110+
services done by our mechanics
TOTAL NUMBER OF EXPERT BMW MECHANICS
1100+
experts on our platform

Recent articles & questions

Top 10 Scenic Drives in Missouri
There’s a reason why Missouri is called the “Show Me State,” and a part of that may be because it shows visitors plenty of scenic views. From the Ozark Mountains with lush forests, to the strong waters of the Mississippi...
3 Essential Things to Know About Your Car’s Windshield Wipers
The The windshield wiper is attached to the hood of your vehicle, and keeps the windshield clean from rain, snow, and other debris that collect on the windshield. The arm of the windshield wiper is connected to an electronic motor,...
P0429 OBD-II Trouble Code: Catalyst Heater Control Circuit
P0429 means that both of the heated oxygen sensors have malfunctioned in some way.

Car keeps dying & wont turn on once turned off. Alternator was tested & it's fine.What else could it be? A new battery was also bought.

Hi, it sound like you have a ground to chassis issue. What this does is complete a circuit and will slowly drain your battery. A couple of quick and easy checks is look at your black negative battery cable and...

Gas meter always says full won't allow me to put full up on gas what can I do??

Hi There, It sounds like you may have two separate issues going on here. Your fuel tank sending unit (https://www.yourmechanic.com/services/fuel-gauge-sender-replacement) is a unit that monitors the fuel level in your tank. When this is not working properly, you may notice...

What type of synthetic oil would be best for 2008 honda accord

There are many different brands of API certified synthetic oils on the market that work better than regular oils and it will come down to preference and price. I personally like Mobil 1, Kendal and Pennzoil. These are top name...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (844) 997-3624 · hi@yourmechanic.com