weak heater blower

the 190d had a heater replaced last year - new part as well, and it has never worked right- it sort of blows- never really demists and eventually will be warm!

My 300TD works great and demists in one minute form cold!

I noticed the 300TD had a blue 25amp for the blower whereas it saysd on the 190D to put a red 16 amp.

I did try the blue 25amp on the 190d and it made a low groaning noise

any suggestions

 

What temp is the engine getting up to on the 190

 

Hmm I don't know. Not sure the guage even works. can find out.
It's not really that it is not hot enough - it just does not blow enough.

I stuck a 25 amp blue fuse in there to see if that was the issue but that was when the noise started
The noise has not gone away even tho replaced immediately with the 16amp red.

Can you please check which fuse it should really be?

just got text from my man- it goes up to 80 degreess- so same as my 300TD