Question about Chevrolet Blazer

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My a/c system is all new. The blower started turning off by itself & then turning back on. Now it doesnt come on at all. The compressor turns on. The a/c switch, blower motor, resistor, & fuses have been replaced. When runing the blower to the battery it comes on. Test light shows power to the switch, plug for the blower, & panel. Why doesnt it work?

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Sometimes the a/c has hi and low pressure sensors in the line that will cause this problem..it will have to be checked out.

Posted on Oct 08, 2009

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1 Answer

A/c on my 94 geo prizm doesnt work


the first test is to ,
the 94s ware 1/2 R12 cars and 1/2 R134, the sticker near the RAD
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the Compressor is the fist thing to watch.
here is the starters list. you at 3
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most likely your ac compressor is locked up. see if you can disconnect ac compressor clutch at compressor. if problem goes away, you can use heater without any problems..

Dec 15, 2012 | 2004 Dodge Stratus

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Acts like dead battery, jump starts, and can drive, but turn on the a/c and whole thing dies and I have to coast to parking and jump start again. any ideas?


you need to check the charging system voltage if the alternator is not putting out voltage the car is only running off the battery and the battery is not being recharged turning on the ac adds the drain from the cooing fan about 30amps and the blower motor inside the car another 20 amps and also the compressor clutch of 20 amps

Aug 17, 2012 | 2000 Nissan Maxima

1 Answer

The blower for the A/C keeps going out. The first time this happend,, i thought the AC had gone out,, but then a couple days later it started blowing again. Last week, my battery went out and so i...


Hi, an intermittent blower can be caused by either the switch or the motor itself. To find which it is, try messing with the switch to see if it will misbehave. If not, then the next time it doesn't work, try hitting the motor. Unfortunately your blower is behind the glove box, but maybe you can just pull the glove box past its stops and reach back to hit the motor with your fist. It hitting it makes it start, the motor has a dead spot on the commutator and should be replaced. Please let me know if you have any questions, and thanks for using FixYa.

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1 Answer

Rear blower works but the front blower doesnt


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Dec 22, 2010 | 2002 Cadillac Sts

1 Answer

2000 Jeep Grand Cherokee Blower on A/C Goes On & Off.


sounds like system is low on freon,? safety switch turns system off when too low on freon to prevent burning itself (the compressor) up...

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2 Answers

Heat & AC blower (fan) does not come on. Just


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Jun 09, 2010 | 1996 Dodge Dakota

1 Answer

My 2003 Duango has a bad blower motor resistor, I think. The back fans blow fine but nothing in the front unless I kick the little box in the passenger side. Ordered a new one, but now the ac blows hot....


likely two different issues ... the clutch that allows the compresser to operate is controled by several things
1. if refrigerant (r134a) is low then the clutch will cycle or not come on at all as the pressure in the system drops below a critical value .. in general if this is the case it may work better (for longer) if it is really hot out .. and maybe not at all when its cool
2. the system detects the fact that the front blower is turned on before it will allow the compressor to operate .. could you have damaged the fan speed switch assembly or wire connectors while kicking or changing the resistor ???
3. the switch that detects low refrigerant pressure could be bad and that switch sometimes operates a relay that has a high failure rate in some car makes ..that would be called the compressor clutch relay, AC relay or some such ...the nature of this relay problem is that the clutch turns on and off randomly then eventually doesnt come on at all ..

if there is no damage to the blower switch or wiring then i would check the refrigerant pressure .. in r134 systems slow leaks are often seen that cause the pressure to drop to the point where the system cant make up its mind about running. typically the compressor will run for a few seconds at a time .. a steady but fast cycling (not random) you can get a r134 pressure gage at any auto parts shop but you should know how to use it or find someone that does ..

Aug 17, 2009 | 2006 Hyundai Accent

1 Answer

1986 cadillac fleetwood is making me loca(crazy)


It all depends on the AC compressor , is it the freely bearing that has jammed or is the compressor itself totally jammed!
You will have to remove the fanbelt onthe compressor and lossen the pulley better if you can remove it, it should come out togther with the bearing .
This will show if its the bearing tht has siezed or the compressor itself.
Hope this helps!

May 10, 2009 | 1986 Cadillac Fleetwood

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