Radiator Cap Pressure Test Service at your home or office.

Our mobile mechanics offer services 7 days a week. Upfront and transparent pricing.

Estimate price near me

Service Location

Customer Ratings

(30)

Included for free with this service

Online Booking

Mechanic comes to you

12-month / 12k-mile warranty

Free 50 point safety inspection

Our certified mobile mechanics can come to your home or office 7 days a week between 7 AM and 9 PM.

Customer Ratings

(30)

How much does Pressure Test Radiator Cap cost?

It depends on the type of car you drive and the auto repair shop you go to. Our mechanics are mobile, which means they don't have the overhead that repair shops have. They provide you convenience by coming to your home or office.

Pressure Test Radiator Cap pricing for various cars

CarsEstimateParts CostLabor CostSavingsAverage Dealer Price
2014 Scion iQ$95$0.00$94.9911%$107.50
2009 Volkswagen Tiguan$95$0.00$94.9911%$107.50
2008 Subaru Legacy$95$0.00$94.9911%$107.50
2015 BMW 435i xDrive Gran Coupe$95$0.00$94.9911%$107.50
2010 BMW 335i$95$0.00$94.9911%$107.50
2013 BMW M6$95$0.00$94.9911%$107.50

Pressure Test Radiator Cap Service

What is the radiator cap pressure test all about?

In a pressurized cooling system like those found on all cars, your car’s radiator cap is calibrated to seal in coolant to a particular pressure point, then allow some vapor to escape once that threshold has been reached. The ejected fluid is piped into the overflow bottle you might have seen in the engine bay. Then, as the engine cools, the coolant level may drop inside radiator. When that happens, a reverse-flow valve in the radiator cap opens to allow fluid from the bottle to return to the radiator. A radiator cap that isn’t working properly may cause too much fluid to escape the system.

Keep in mind:

  • A radiator cap pressure test is quick and simple, and replacement radiator caps are inexpensive.
  • Leaving a defective radiator cap in place can cause damage to the engine.

How it's done:

  • The vehicle engine is cooled before the radiator cap can be removed
  • The radiator pressure is relieved and the cap is removed
  • The radiator cap is pressure tested to specifications
  • The radiator cap is replaced and/or reinstalled to the radiator
  • The vehicle is verified to confirm problem is fixed

Our recommendation:

If your car’s engine overheats, or the overflow bottle seems overly full, have the radiator (and radiator cap) pressure tested.

What are the common symptoms indicating you need to pressure test the radiator cap?

  • Car overheats
  • Car’s overflow bottle fills up

How important is this service?

Not having this safety valve on the car’s cooling system operate properly can over- or under-pressurize the system, leading to damage to hoses, the radiator, and even the car’s cylinder head.


Recent Pressure Test Radiator Cap reviews

Excellent Rating

(30)

Rating Summary
30
0
0
0
0
30
0
0
0
0

Jose

12 years of experience
54 reviews
Jose
12 years of experience
Chrysler Pacifica V6-3.8L - Pressure Test Radiator Cap - Redlands, California
Very friendly and punctual. Knows what he is talking about. Appreciate Jose working on my car. I would recommend him to customers.

Hugh

11 years of experience
108 reviews
Hugh
11 years of experience
Subaru Outback H4-2.5L - Pressure Test Radiator Cap - Littleton, Colorado
Hugh was super honest and competent. I scheduled the service based on a repair shop and a dealer's recommendation. But Hugh came, did a quick inspection and determined a simple cap replacement should fix the overheating issue and it did. Obviously that saved me a lot of money and made feel a lot better about my car. Hugh was also very friendly, easy-going. I would recommend him in a heartbeat.

Trevor

22 years of experience
185 reviews
Trevor
22 years of experience
Honda Civic L4-1.7L - Pressure Test Radiator Cap - Oceanside, California
Trevor in Oceanside, CA is excellent. Correctly diagnosed my car’s problems, provided me with a fair quote for only what was needed (no scamming/upselling/etc), then came back a couple days later for a follow up to complete the repairs. Arrived on time, quickly fixed what was wrong, and my car is running perfectly after paying for repairs that cost only a fraction of what I was expecting. Would definitely recommend.

Robert

12 years of experience
76 reviews
Robert
12 years of experience
Dodge Ram 1500 Van V8-5.9L - Pressure Test Radiator Cap - San Jose, California
From the beginning, I knew just from looking at Robert, that he would exceed expectations and I was not wrong! My suspension diagnostic revealed stripped wheel barrings. It was the source of my driving problems including knocking noises. Thank you Robert for your thorough and patient diagnostic and recommendations to the problems. I recommend knowledgeable, professional Robert for your vehicle needs and will be doing by my word also.

Recent articles & questions

P0752 OBD-II Trouble Code: Shift Solenoid A Stuck On
P0752 code means an abnormality was detected by the PCM in shift solenoid A often due too low/dirty transmission fluid or valve malfunction.
How to Get Smog Technician Certified in Idaho
Automotive technician jobs include smog certified emissions inspectors. In Idaho, how to become an inspector varies by county.
How to Troubleshoot a Parking Brake That Won’t Release
Emergency brakes won't release if there's a damaged parking brake, return spring, rear caliper pivot arm, or a caliper with a stuck piston.

Water leaking from inside car from roof 2008 Chevrolet Malibu

Hi there - most sunroofs leak because of clogged drain tubes - usually the front 2 of course. They clog up with grit from tree leaves and road grime. Take a length of monofilament fishing line (25 lb test works...

I have two dodge vehicles can I program one key fob to work both autos

Different vehicles use different transponder codes for security reasons. Sometimes they are "rolling codes" - they change after each use. The control module in each vehicle is set for different codes. If this wasn't how they are set up, then...

Why does my car shut off right as I am parking and it runs rough 2000 Nissan Altima

Hi there. It sounds like you either have some sort of vacuum leak or possibly an engine misfire. I usually start by checking to see if the check engine light is on and if it is then I scan the...

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 (855) 347-2779 · hi@yourmechanic.com