Its me again! please bless me with your sagely knowledge

[lsmalley]

ive read almost every single thread from benzworld to 190revolution. can someone please help me? does anyone have any tips on how to make the a/c in a 1990 190E 2.6L cooler? i mean really, super ice cold! i live in palm springs, the temp gets up to +120 degrees it cools off at night (around 10:30pm) to about +90 degrees, which is still effing hot! everything on my car is in top shape, my compressor and receiver dryer were both replaced in april 2008, heater valve is working fine, no vacuum leaks either. its just that my car is so GD hot! especially at idle the air feels like its blowing out at 80 degrees from the a/c. i get mild relief if im driving at 50-60 mph, but even then its not really that cold? what can be wrong? everything is working fine. if it was ....say 85 degrees here then the a/c would feel fine or if it was in the 70's then it would even be fine at idle. what gives? anyone have anything helpful to add...other than telling me to buy another car or move out of palm springs? thanks and cheers!

[Arthur Dalton]

Aux fan coming On w/ac ?

[lsmalley]

the aux fan comes on when the temp gauge goes up to about 115 degrees plus or minus

[Arthur Dalton]

Wrong fan... I want to know if the aux low speed fan comes on w/ac ..if NO , then that is your problem

[lsmalley]

what low speed fan? you mean the blower motor fan? if so, that was just replaced as well about 3 months ago.

[Arthur Dalton]

<>


The fan in front of the condenser/radiator.

It has TWO speeds
High for coolant temp and Low for a/c operation

So , same question.
Do yopu have low fan w/ac ???
Yes/No

[lsmalley]

yes. the large fan thats spins with the belt! right? it sits right behing the 2 smaller fans. it spins and was just serviced when i had the support bracket replaced about 8 months ago

[Arthur Dalton]

<<
>>
yes. the large fan thats spins with the belt! right? >>


NO.....


OK ..I will give you one more try.

Read twice.

Your car has a couple of ELECRIC FANS in FRONT of the condenser . They have TWO destinct SPEEDS....... HIGH/LOW

When the engine gets too hot, they come ON HIGH SPEED.
When you use the a/c , They come on LOW SPEED

Question is the same .
Do these low speed fans come ON when you use the AC?

Yes/No

[lsmalley]

do you mean these 2 fans shown in the pic? im sorry my knowledge in automobile mechanics is limited. these and the large fan are the only fans i know of. but if these are it, then i dont think they come on except for when the temp gauges increases to a certain point. how do i get them to come on? if this isnt then can you possibly provide a pic?

[gschira]

A Dalton,
1988 300SE. One aux. fan. Would this setup work same as above? How to diagnose problem if fan does not come on either way Thanx

[Arthur Dalton]

OK
Your answer is NO.

Thank You.

On the reciever/drier is the switch that turns those fans ON low speed when the a/c system calls for them.
The sw has a pigtail 2 wires coming from it and if you jumper those two wires , does the fans then come ON ??

Key ON for this test.

[Arthur Dalton]

Originally Posted by gschira

A Dalton,
1988 300SE. One aux. fan. Would this setup work same as above? How to diagnose problem if fan does not come on either way Thanx

Do not hijack a thread that is in the Diagnosis process, Please.

[lsmalley]

i will go out and check right now...wait. where are the wires located and the receiver dryer? where should i start looking? sorry, like i said my knowledge is limited and thats putting it very mildly. but im a fast learner. also, thank you for helping me troubleshoot this.

[Arthur Dalton]

i CAN'T DO PICTURES AND STUFF.

aRCHIEVES TELL ALL ABOUT WHERE THESE PARTS ARE AT.

dRIER IS TO RIGHT OF RADIATOR AND THE SW IS THE ONE WITH THE 6" PIGTAILS ON IT ..IF YOU HAVE FAN WITH THAT JUMPER . POST IT.

iF YOU CAN'T FIND THE PARTS , USE THE ARCHIEVES AS i DO NOT HAVE TIME TO POINT OBVIOUS STUFF OUT..

6 post and a picture to locate the obvious fans in front of the radiator....

[lsmalley]

ok, i will search for pictures and go out and find the sw with the pigtails. i will message you back with my findings. it may take a while so i will send you a direct mesage to your inbox. thansk again for taking time out to help me troubleshoot this. i greatly appreciate it!