Close
Car Questions
RepairPal is your advocate for car care advice and guidance

Heater blows cold air

(1999 Lincoln Navigator)
in Derby, KS on January 01, 2010
We turn the heater on and it will blow hot air initially and then it turns cold....as we accelerate it will heat back up. This continues while we drive.
Displaying 1 answer & 0 comments
Popular Answer
on January 01, 2010
Sounds like an open Thermostat, pretty common. You may even have a Check Engine Light on and code for improper warm up, yes?

http://repairpal.com/check-engine-light here is an article explaining a bit about the check engine light and the Thermostat code http://repairpal.com/OBD-Code-P0128
Sign in to reply
Get a repair estimate
RepairPal estimates are guaranteed at over 2,000 quality certified locations nationwide.
Or interested in getting a repair? Find a Shop

Similar Questions

View answers to similar questions from RepairPal's community of auto experts and enthusiasts.
My heater works great until the temperatures drop and it is really needed. then the thermostat temperature fluctuate...
When i cut my heat on i only feel warm air by the driver side the middle vent an passenger vent is blowing cold air
Didn't find what you were looking for?