Mitsubishi: Radiator Hose Collapsed

Mitsubishi: Radiator Hose Collapsed

If the radiator cap’s vent valve is stuck closed from corrosion contamination, the cooling system cannot pull coolant back from the reservoir.

Mitsubishi radiator ventThis may cause the upper and/or lower radiator hose to collapse. If the radiator cap vent valve is stuck, change the coolant and replace the radiator cap.

Affected Vehicles
2003-’05 Outlander
2002-’05 Lancer


1. Verify that the upper and/or lower radiator hose is collapsed.
2. Use a trim stick to gently attempt to lift the vent valve.
3. If the vent valve is stuck, change the coolant as described in Group 14 of the appropriate service manual. Then replace the radiator cap with part number 1350A199 or equivalent.

NOTE: Do not replace the thermostat for a ­collapsed radiator hose.

Courtesy of Identifix

You May Also Like

Nissan Electro Hydraulic Steering

Nissan’s steering system is susceptible to driver-error. Here’s what to look for in these systems.

Nissan’s electro-hydraulic power steering system provides the same feel of a conventional hydraulic power steering system while improving fuel economy by using an electric motor to power the pump. The system is comprised of the electro-hydraulic pump assembly, control module and steering gear.

The power steering module is on top of the pump, and the motor controls the speed of the power steering pump according to vehicle speed and steering angle. By changing the pump speed, the module controls the steering assist force. The control module is connected to the hi-speed CAN bus that ties the engine control module (ECM) and ABS module. The ABS module provides vehicle speed and steering angle, and torque data to the power steering system. The connection to the ECM allows the alternator to provide enough power when the pump is running.

Subaru HVAC Diagnostics

On some more modern Subaru vehicles, you might be better off grabbing your scan tool.

New Motor Mount Technology

Engine speed is the primary input that determines the stiffness of the mount.

Mazda SkyActiv Engine Service Tips

These engines have been reliable, but there are four pattern failures you might see at your shop.

Subaru Tech Tip: Spiderwebs Blocking The Camera

If the webs can be removed without touching the camera lens, carefully remove them and reassemble the camera.

Other Posts

Nissan Suspension Restoration

The shock or strut controls how the energy in the spring is absorbed and compressed.

KIA Barely Runs

Check the low-pressure pump (LPP) supply fuel pressure to the high-pressure pump (HPP).

MADZA Engine Crank/No Start

Repair any loose or damaged terminals as needed.

2011-2014 Hyundai Sonata Hybrid Service

The Hyundai hybrid system has a motor control unit (MCU) and hybrid control unit (HCU).