upper radiator hose collapsing - Engine Troubleshooting


	Auto Repair Home	SEARCH POSTS	WHO'S ONLINE	LOG IN

Automotive Repair

Car Troubleshooting Topics
  Car Troubleshooting
  Engine Troubleshooting
  Engine Fault Codes
  Electrical and Wiring
  Transmission Problems

Car Repair Topics
  Car Making Noises
  Car Stereo Repair
  Heating or AC Issues
  Motorcycles and ATVs
  Tricks of the Trade
  Truck Repair Advice

Site Options:
  Login
  Sign up here!

Latest Forum Post

Strut spring orientation and strut mount tension nut

2017 Nissan rogue awd 2.5 L Put in Monro...

Transmission stuck in part, I have tried everything

So I'm working on my elderly fathers 201...

2017 dodge journey LED headlights on/off randomly

Year of vehicle 2017 Make of vehicle dod...

Kia Soul starter replacement issues!

Okay so my car is a 2010 Kia soul 2.0 en...

Please Help - Knock sound & engine fail

Hi all, Hoping to get some insight and ...

multiple warning lights

2013 GMC Terrain 130,000 miles 4 cylinde...

03 alero no low speed blower

Good day everyone, I have a 2003 Olds a...

04 Chevy 2500hd tail light issues

Help!!! I have changed my combo switch...

1999 Grand Caravan Sport not starting.

Hi. I'm new here. I hope someone can hel...

Brake Seals Bulging

2021 Toyota Corolla LE 1.8l 65,000 mile...

upper radiator hose collapsing

Sign up here!

Search for (search options)

Auto Repair Home>> Automotive Repair>> Engine Troubleshooting

theater429
New User

Dec 22, 2018, 12:09 PM

Post #1 of 3 (2555 views)

upper radiator hose collapsing	Sign In

2007 Chrysler Pacifica Touring w/ 4.0 liter. Did an antifreeze flush and refill and changed the thermostat w/oe 195 degree. Having trouble with heat so I flushed heater core. After running vehicle both hoses going to heater core are hot but still no heat in vehicle. I've noticed when car is cold that the upper radiator hose is collapsed flat but after engine heats up the hose reinflates to normal. This continues as engine cools down and heats up. What would cause this to happen? I've noticed that my cars radiator temp gauge will reach about 200 degrees, the fans will come on then the gauge will drop to about 180 degrees then when gauge hits 200 degrees this process starts all over again. I'm not use to this because my Chrysler Town & Country reaches a certain temp and stays there. Whats up! Could no heat in cabin be blend door actuator or temp sensor but what's up with cllapsed upper radiator hose?

Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Dec 22, 2018, 2:51 PM

Post #2 of 3 (2544 views)

Re: upper radiator hose collapsing	Sign In

? Hose collapse is the clue to problem. It shouldn't so easily was freakin' 50+ years ago they put springs in them so water pumps wouldn't suck one closed.
OK - No heat and collapsing hose. 1st would stop this hose thing by testing the pressure cap which also has to allow air in as coolant contracts yet hold pressure as it expands. Hose still should do that so easily so "pressure cap" should go or try to find a tester for both vacuum and the correct pressure IDK of one for this it's probably just spent.

Can't allow this with any car/vehicle your temps shouldn't really drop to 180 once up to temp so there's another accuracy problem on top I think? Cap first but that wont be the end of this problem,

T

Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Dec 22, 2018, 4:13 PM

Post #3 of 3 (2540 views)

Re: upper radiator hose collapsing	Sign In

Listen to Tom on the radiator hose thing.

On your heater problem, if both hoses are hot to the touch, then you do have a blend door issue.

Also, make sure you are getting all the air pockets out for the system from the refill.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.

Search for (options) Privacy Sitemap