Q: Cannot remove radiator hoses from heater core fittings

asked by on December 31, 2017

Blower motor works. Temperature control module works. Able to have air blow from both defrost and at your feet. Air does not blow from face vents. Separate issue, has not worked for awhile and can live with it. Recently the temperature of the output air has significantly dropped. Have had the car for 3 years. Heat has never been an issue. Pretty much blowing only cold air now. In-flow line to heater core is hot. Assume water pump is working and thermostat is functioning properly. Out-flow line from heater core is warm, but not as hot as in-flow line. In general, there is a mildewy / musty smell in my car. Not sure if related. Attempted to do a back-flush of the heater core myself. Had everything setup: Hose with clear plastic tubing and attachments, buckets, vinegar, CLR. Hit a problem that stopped all work: Could not remove hoses from heater core fittings. Bought pick tools to assist in removal of stuck hoses. Could not get to work. Any suggestions on other methods to remove hoses?

My car has 111850 miles.
My car has an automatic transmission.

Hi Brett. Thanks for sending us your question today. The first thing I’d do is refer to Jeep’s repair and service manaul, to determine if they recommend any specific tools or procedures for this job. The heater core coolant tubes can be tricky to remove, especially if they are corroded on the inside of the hose. I typically use a pick-tool to separate the hose from the male fitting on the core, then twist the hose to remove. You might want to remove the heater core itself and replace it.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

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

Battery saving active 2008 Chevy Impala how do I fix it

Hi There, This can be caused by a loose battery cable which is often times the problem. Try checking to be sure they are connected properly. Also, there is a sensor that has 3 small wires running to it that...

Can I change my car oil from 5w-20 to 10w-20 because the oil is burning quicker?

The effect on oil consumption will be zero to negligible (these are both SAE 20 weight oils at operating temperature) and, in any event, any beneficial effect will be offset by the reduction in the efficiency of operation of the...

It’s a 2008 pt cruiser and when I try to reverse and I have to actually press the gas petal for it to be able to reverse it

Are the brakes or the parking brake sticking or stuck? You can check to see if the wheels turn freely to rule that in or out. If the wheels are not stuck, either the engine or the transmission has a...

Related articles

A Buyer’s Guide to the 2012 Jeep Patriot
Those Those who love getting off road will often turn to a Jeep. The 2012 Patriot could be a good choice for those who want a quality vehicle for the roads, and when they decide to venture off the beaten...
The Best Used Cars to Buy That Can Be Towed Behind an RV
Summer Summer is a great time for a road trip, but often travelers like bringing all the conveniences of home along, in the form of an RV. Then they tow their car behind it – sometimes this practice is called...
The Best Used Cars to Buy If You’re a Photographer
If If you are a photographer, and you’re considering buying a used car, the big thing to consider is the type of photography you do. Thanks to the advances in digital photography, chances are you’re not hauling around a lot...