 鲜花( 128)  鸡蛋( 0)
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first check coolant level, add if require
, u. m# c3 m! s, G8 Q- y0 e$ ZFLUSH COOLANT 3 f* ^, K0 ]. i8 V
CHANGE THERMOSTAT
2 I3 x' n0 @- B+ v* _if still doesn't work, flush coolant again 6 R8 U: k2 V/ j P0 }( `
if still doesn't work, maybe change heater core(big job) 3 @7 Z. n! N& S9 G
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