 鲜花( 128)  鸡蛋( 0)
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first check coolant level, add if require
& X! o) m9 n, l/ v$ e5 F) vFLUSH COOLANT
' m2 v2 U( [' ]CHANGE THERMOSTAT 2 B+ |, m# M% ]* o5 j) L, b
if still doesn't work, flush coolant again
# g `7 Y" w4 m8 @( V+ Gif still doesn't work, maybe change heater core(big job) # |) f( ^ F! `$ L% ^
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