Sixto, if it is similar to the late 126's the interior temp sensor is in the dome lamp assembly and the aspirator motor is buried in the passenger side dash. Remove the lamp assembly and see if there is a black plastic hose running from the assembly toward the passenger A pilar.

I will take a quick look at the EPC for the 140 and see if I can narrow down your search.

__________________
Mike Tangas
'73 280SEL 4.5 (9/72)- RIP
Only 8,173 units built from 5/71 thru 11/72

'02 CLK320 Cabriolet - wifey's mid-life crisis

2012 VW Jetta Sportwagon TDI...at least its a diesel

Non illegitemae carborundum.