Skip the auto shop - Our mechanics make house calls

Q: Losing coolant on a 2003 Dodge Ram 1500

asked by on

I have an O3 Dodge Ram 1500. I'm losing coolant at a slow but noticeable rate. I've done a pressure test professionally but it came back fine. No trouble closing the cap, it's new. Where could I be losing coolant?

If it’s been pressure tested it shows no leaks, the odds are that it’s burning. In your case, it’s almost always a head gasket that is starting to blow. I’ve got a video called "How to Tell If Your Head Gasket Is Blown". It’s a simple test, you can buy a kit on the Amazon yourself if you want to for 39 bucks, like I did. You place the kit it in where the radiator cap goes and pour in a blue fluid. During the test, if the blue fluid turns yellow, it means that the head gasket is blown. I’d start by trying this test if I were you.

If you realize that you’ve got to spend a whole bunch of money fixing it, you might even think about getting rid of the truck because you are going to spend thousands fixing it if the test turns out positive. I’d recommend having a certified mechanic run the test for you to pinpoint your coolant problem and accurately give you a diagnoses.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: How do I find the vehicle identification number (VIN)?

Your car’s VIN allows your car to be specifically identified. It is a 17-character label that is necessary for selling or registering your car. Your VIN can be found in a few different locations: On top of the instrument...

Q: External leak and car losing coolant

Hello! If there was a loud ticking noise you may have some internal engine damage. But I wouldn't go replacing the lifters just yet. I would recommend checking what is leaking first. If you're doing the upper gasket it is...

Q: Check engine light

Hi There, It sounds like unplugging the MAF sensor may be related to the issue with the purge solenoid that has not been replaced. Your car has a small purge valve with a purge solenoid in the Evaporative Emissions system...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.