How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Kevin Your Own Question
Kevin
Kevin, Master tech
Category: Mercedes
Satisfied Customers: 1425
Experience:  Diagnostic technician
84635724
Type Your Mercedes Question Here...
Kevin is online now
A new question is answered every 9 seconds

Does the cooling fans come on as a/c turns on? It's

Customer Question

Does the cooling fans come on as a/c turns on?
It's regardless the 2000 Mercedes c230
This vehicle has two fans at front of the condenser and one that is driven by the belt (mechanical)
Thank you
Submitted: 8 months ago.
Category: Mercedes
Expert:  Kevin replied 8 months ago.
Hi im kevin how can we help ?
Customer: replied 8 months ago.
Where is the answer ?
Expert:  Kevin replied 8 months ago.

I did write back on the 18th requesting more info on your question as to what help you required .does fan only run when ac on ?not running without ac on ?

Customer: replied 8 months ago.
I didn't see any respond
But any way
The front two cooling fans don't come on at all when a/c is on and a/c will blow warm air at idle but at driving conditions it works good
Expert:  Kevin replied 8 months ago.

fan should run to cool the warm gas inside condenser .wont come on instantly but after ac has been running for a couple of minutes fan will come on and off as needed .does cooling fan work when engine is left to get warm ?

Customer: replied 8 months ago.
No
The main cooling fan that is driven by water pump and belt is the one that I would say cools the engine and a/c to extend
I have tested the fans manually they do work
Also had main cooling fan module replaced and didn't help stayed the same , didn't turn the fans on when a/c was turned on
Expert:  Kevin replied 8 months ago.

the fan on the engine runs full time then when engine gets hot one of the electric fans cuts in and out to further regulate engine temperature .the other fan is for ac

Customer: replied 8 months ago.
My question what's else could be the cause of no fans when a/c is on?
Expert:  Kevin replied 8 months ago.

its either a wiring issue to and from the fans or a temp /pressure sensor fault on the ac system .have you had ac scanned for fault codes?

Customer: replied 8 months ago.
No I haven't
Where is the pressure switch is located?
Expert:  Kevin replied 8 months ago.

it screws into receiver drier behind the drivers headlamp

Customer: replied 8 months ago.
is their is any other sensors that could be the problem to the cooling fan beside the wiring?
Expert:  Kevin replied 8 months ago.

im goimng to opt out my info on this model is restricted to more detail another tech may have more detailed info

Related Mercedes Questions