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Old 09-16-2002, 09:17 PM
Registered User
Join Date: Jul 2002
Location: Stony Brook, NY
Posts: 160
Dear God, is there a way to determine if this problem is the Klima or not?

The problem is the same, the a/c compressor will not engage. I checked the connections at the compressor, cleaned and reinstalled. I removed the Klima and cleaned it with circuit board cleaner. I also cleaned the contacts of the relay. Reinstalled and NOTHING. The I carefulle wedged a very thin piece of nonconducting washer to hold the relay closed. VIOLA! The compressor engages and a/c works. Remove the washer and the relay contacts open and won't engage so the compressor will not engage.

So, it seems my problem is either the relay is bad or something is keeping the relay from closing and making a circuit.

Someone on the list suggested removing the wires to the 105/115 temp sensor incase it's gone bad and believes the car is too hot so the compressor won't engage. It's supposed to be somewhere near the top water hose. I looked aroung the top water hose and all near that housing that looks like the old thermostat housings (heck, it might be the thermostat housing for all I know) but I could not find a single wire anywhere!

If someone can tell me what the sensor looks like and more precisely where it is, I might be able to find it. If not, I'm going to have to buy a new Klima. I'd hate to do that because I have a feeling it won't make any difference. And man would that suck to be out $350+ and still no solution.

Thanks all,

Ron Brooks
Ron Brooks
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Old 09-16-2002, 10:29 PM
Registered User
Join Date: Aug 1999
Location: Florida / N.H.
Posts: 8,768
If the clutch came on when you mechanically tripped the points in the relay, then your problem is in the primary circuit feed that energizes the coil for the contacts
This can be anything from a feed fuse , freon pressure sw, temp sensor, etc...
I have the Clutch Control schematic and will send it jpg. if you email me.
That will tell you the where /whats of each component and the part interior switchings
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Old 09-17-2002, 08:18 AM
Join Date: Mar 1999
Location: Tucker, Ga USA
Posts: 12,153
To determine whether the problem is inside OR under hood, you must see if the pin number 10 on the "klima" relay gets a GROUND command signal from the pushbutton assembly. WITH the car running measure for battery voltage between pins # 5(power) & pin # 10, IF you have battery voltage then the problem is in the "klima" relay.
Your car doesn't have a 105/115 switch like the 1987 & earlier cars have. Your car has a blue 2 pin BLUE sensor that talks to the pushbutton & if the engine is too hot(or bad switch) the aux fans run & the GROUND command signal to pin 10 is shut off!!!
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Old 09-17-2002, 08:54 AM
Registered User
Join Date: Jul 2002
Location: Stony Brook, NY
Posts: 160
Not being knowledgeable about electric conductivity, except the ability to be shocked, what device would I use to measure the presence of absence of voltage. Are we talking a simple 12 volt test light or a "volmeter" hand-held thingy? A 12 volt test light I have, if I need to measure the charge, that I don't have.
Ron Brooks
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