fan blower switch work engine off not engine on

cra_arc

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Joined
Jan 7, 2005
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24
hi all a bit of help please.

w201 2.3 16v heater/blower fan works with ignition switched to position 1 or 2 with engine not running
it works in all positions until i start the engine then it wont run.

stop the engine try again it works in all positions

restart engine it stops.

so effectively only have a fan when sitting with engine off not ideal..

ideas?

is there a relay for this if so where and does it affect anything else? cant see anything else not working as yet. ignition switch maybe? but why would it work in first two positions?

im stuck on where to start looking.
 
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cra_arc

New Member
Joined
Jan 7, 2005
Messages
24
UPDATE

Got this from pelican parts forums "When this occurs try twisting the key counterclockwise one or two millimeters. The spring in the ignition switch, from the start to run position can become tired. The result is only one of the circa 15 contacts connect, the car runs but the blower does not.
This only happens when coming from the starting position not the off to run position."

ordered a new battery also because apparently when it starts to fail some circuits may not kick in and are protected. it was weak in any case.

so a new ignition lock on the way it seems,
 

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