Big radiator tube shrinks when switching modes on heater from vent to defrost

5

Asked by Sep 21, 2014 at 06:36 AM about the 1990 Lincoln Town Car Base

Question type: Maintenance & Repair

Refreshing coolant after heater core replacement. Add 1,5 gallon of distilled water in
radiator to flash to remove residues of old coolant. Put heater on max in mode "vent".
Start engine. Then after 10-15 minutes of engine idling, I've turned heater mode from
"vent" to "defrost' and upper radiator tube shrinks extremely and engine sound is
changing. Coolant temperature is always in normal. And bubbles always coming out in
coolant reservoir. By the way one of heater core tubes that goes "in" is hard and hot,
but other tube that goes "out" is quite soft. Any versions? Thank You!

4 Answers

5

But hose and termostat are new

took that down just as you posted because I got to -re'thinking it, and not so sure of myself, Your statement proves it, I was wrong. so.. the hose collapsing is from when radiator dumps coolant in to overflow and creates a vacuum. Maybe a new radiator cap, could be that simple because since it's not overheating the cap should hold the pressure and not dump in to overflow tank

2 of 2 people found this helpful.
Best Answer

As far as the part about the heater core hoses, the one going in is pressurized and hot, but after passing through core, which is just a small radiator, it's cooler and not as much pressure

2 of 2 people found this helpful.
112,085

Sounds like you possibly have some air trapped in the cooling system.

2 of 2 people found this helpful.

Your Answer

Add photo

Related Questions

Town Car

Looking for a Used Town Car in your area?

CarGurus has 1,791 nationwide Town Car listings starting at $1,495.

ZIP:

Search Lincoln Town Car Questions

Lincoln Town Car Experts

#1 Tracy Hooks
Tracy Hooks
Reputation 1,590
#1 Tom Demyan
Tom Demyan
Reputation 1,590
#3 tennisshoes
tennisshoes
Reputation 1,150
View All

Related Models For Sale

Used Mercury Grand Marquis
31 Great Deals out of 1,786 listings starting at $2,250
Used Lincoln Continental
9 Great Deals out of 4,764 listings starting at $39,998
Used Cadillac DeVille
5 Great Deals out of 1,744 listings starting at $2,200
Used Ford Crown Victoria
13 Great Deals out of 1,278 listings starting at $1,995
Used Ford F-150
2,169 Great Deals out of 195,112 listings starting at $290
Used Ford Mustang
714 Great Deals out of 44,996 listings starting at $1,500

Used Cars For Sale

2011 Lincoln Town Car For Sale
3 Great Deals out of 50 listings starting at $3,900
2010 Lincoln Town Car For Sale
62 listings starting at $2,424
2008 Lincoln Town Car For Sale
53 listings starting at $4,995
2007 Lincoln Town Car For Sale
7 Great Deals out of 160 listings starting at $2,688

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.