Air conditioner clutch will not engage. also my car has auto climate control and the external temp. light always reads 30 degrees.

Yes dash control is bad most likely

I have a 2000 pontiac grand prix with a digital climate control system. The heat quit working, it doesn't blow out any heat. Now that it is warm outside the air stopped blowing out any air. The digital temperature on the climate control is not correct. When it states that it is below 30 degrees on the ext and it is warm outside the air wont be cold. Once it starts going above 30 degrees the air gets colder. Today the blower stop working all together. Was told it maybe the climate control unit was bad. You can hear the door opening/shutting when you switch the temp from cold to hot. But there was no heat blowing out whatsoever in the winter time. Could you please give me your opinion on whether or not it is the climate control unit or something else?

Normally the air conditioner clutch is activated by the a/c fan switch. If the protecting fuse is blown, neither fan nor compressor will operate. Check your a/c fuse in the fuse box.

If the defrost is on when you turn the climate control on this is normal.Even if the temp.setting is to hot.The clutch will cycle on and off.Hope this helps.Good luck.

I assume you mean the car burns more gas when you turn on the heat. The climate control panel also controls the air conditioning system. When the air conditioner is turned on it activates the belt driven compressor thru electrical relays and clutch system. The clutch is located on the compressor pulley, its the secondary outer most ring. The cars engine has to work harder because of the extra load on the engine when this clutch engages. This causes the car to have a higher demand for fuel. The malfunctioning control panel could be activating the airconditioning system unknowingly to yourself. Replace the control panel first, if that doesn't solve the problem check the compressor clutch to see if its engaging with the aircondition system turned to off. If thats the case, check for a stuck system relay.

External sensor is most bad or cloged. Remove the plastic cover that the hood prop rod fastens to and you will see the sensor. I purchased mine from the dealer for twenty dollars. If it gets worse and reads below 32 degrees your a/c will not come on. This happened to me in July.

Had the same problem, replaced the ambient air temp sensor in front of the radiator. Cost is like 10-15 bucks. Don't worry if temp doesn't change right away. Took me about 5 miles and then it worked great.

Same car, same problem. Press MODE, FRONT and REAR buttons together to reset tempreture. You probably need to replace the sensor GM part number 15047946 it is in the front grill email me for a picture. [email protected]

this is most likely a a lack of r-134a (as freon is no longer used), if your system is completely out or close to it then the pressure sensor will not allow the compressor clutch to engage, it is also possible that there is an electrical issue but less likely. to know for sure you need to put some gauges on the system

you dont have enough gas in your a/c system. Regass and check again. The clutch work on pressure. As soon as the pressure reaches the requirement, the clutch will disengage.