1997 Renault Megane heater running cool, engine running coo

1997 RENAULT MEGANE
10,000 MILES • 4 CYL • 2WD • MANUAL
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ROMEO18
  • MEMBER
  • 1 POST
HEATER DELIVERS SLIGHTLY WARM AIR ONLY AT HOTEST SETTINGS. ENGINE RUNS TO NORMAL TEMPERATURE STATIONARY BUT TEMP DROPS LOW WHEN DRIVEN AROUND.NEVER OVERHEATS DOES NOT LEAK OR USE WATER,HEATER CONTROLS SEEM TO WORK PROPERLY FAN ETC
TRIED BLEEDING SYSTEM WITH BLEED VAVLE UNDER BONNET, NO CHANGE. BEEN LIKE THIS FOR COUPLE OF YEARS BUT WE CAN NOW FEEL THE COLD!
Dec 12, 2008 at 8:34 AM
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DAVE H
  • ✓ASE Certified Mechanic
  • 13,384 POSTS
  • ASE Certified Mechanic
heater core is probably blocked .. remove heater core hoses and use hose pipe to rinse through .. .. refill coolant system ensuring no air gets into sytem and re-test heater ?
Dec 13, 2008 at 10:12 PM
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