HELP HEATER BOOSTER 2004 Sprinter

ajakapari

Expert Expediter
I have a problem wiht my sprinter heater booster for som reason its not working properly , the problem with it is that when i press the button on the dash it starts u can hear the fan spinning and whinning like it does , smoke starts to come out of the exhaust and then stops after like 2min or so.... then the fan stops and then after liek 2-3 min it does the same thing one more time and then after that nothing .. it shuts off i belive and it does not heat the motor or anything i have taken it apart liek 3 times and i dont know what might be the problem .... it seems like its trying to fire up or something like that , but it dosent happen.... or maybe not enough air idk.... if anyone knows or might have a idea PLZ help.!
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