- Thread starter wigan mon
- Start date
Lobster
Enthusiast
- Messages
- 1,197
- Location
- Lancashire
Hello, Could be many reasons.
Thermostat stuck, leaking heater matrix been filled with radweld to temporarily cure it?
(although I hope its the former rather than the latter, Megane heater matrix replacement is a BIG JOB iirc !)
Worth checking the coolant level to start with then see if the water hoses are getting hot as it warms up.
More here - http://lmgtfy.com/?q=renault+megane+heater+only+blowing+cold+air
Thermostat stuck, leaking heater matrix been filled with radweld to temporarily cure it?
(although I hope its the former rather than the latter, Megane heater matrix replacement is a BIG JOB iirc !)
Worth checking the coolant level to start with then see if the water hoses are getting hot as it warms up.
More here - http://lmgtfy.com/?q=renault+megane+heater+only+blowing+cold+air
renault4mad
Enthusiast
- Messages
- 497
- Location
- Penzance
Hello,
as lobster says, check the in and out pipes on the bulkhead for heat...maybe worth back flushing them with a hose...not a pressure washer as if you have a week matrix it may blow holes in it...fill it up with antifreeze/water mix and remember to bleed the air out..
The renault book time is 5.5 hours to change the matrix inc removal of the dash...so i would try this first..
good luck
as lobster says, check the in and out pipes on the bulkhead for heat...maybe worth back flushing them with a hose...not a pressure washer as if you have a week matrix it may blow holes in it...fill it up with antifreeze/water mix and remember to bleed the air out..
The renault book time is 5.5 hours to change the matrix inc removal of the dash...so i would try this first..
good luck