We get luke warm heat

CAROL O'REILLY

MEMBER
1998 FORD FIVE HUNDRED
124,000 MILES

Heater issue. When engine is warm we got some luke warm heat for short period of time but eventually even that stops. Could it be the thermostat?

Monday, December 19th, 2011 AT 1:46 PM

1 Reply

HMAC300

MECHANIC
48,601 POSTS

Check to see if both heater hoses are hot when the vehicle is warmed up. If they are then it's an actuator problem in the heater unit under the dash. They can be either electricalor vacuum operated. If vacuum check for a leak at control or one of the hoses or actuator. Generic pic enclosed.

Image (Click to make bigger)