Sometimes, when on an all-day trip, the blend door can freeze up, and it’ll stay in whatever position it was in when frozen. The blend door actuator may be bad or stuck if your AC system is not blowing cold air. Your Silhouette’s blend door is responsible for adjusting how much air gets in from the A/C system and the heater core. They almost all use blend door actuators. Very few vehicles still use manually controlled blend doors (where there is a wire that connects to the temperature slider). As a result, the system pressure will diminish, and you’ll have to repeat the cycle until you discover WHY the system was leaking and repair it. Having the system recharged can temporarily get your AC system blowing cold again. If the refrigerant leaks out of the system, eventually, there won’t be enough left to cool your Silhouette. If you add too much coolant to your van, you can cause more leaks in the AC system. Here’s how to go about testing the pressure and chasing the leak: If the A/C system leaks, you can chase it down with a leak detection kit and UV dye. Testing your Silhouette’s AC system pressure can help determine if you are chasing a leak or if there’s another issue at work. The most common reason for your Oldsmobile Silhouette’s AC not blowing cold enough is low refrigerant levels, followed by a dirty evaporator or condenser issues (bad or clogged). If there’s no voltage, test the resistor (YouTube). If voltage goes to the blower motor, it’ll need replacing. A simple test light will usually do the trick. We recommend testing the circuit for voltage at the blower motor first because it’s almost always easier. You can tell if the blower motor resistor has failed by testing for voltage where the harness plugs into the blower motor. Here’s how to test a blower motor with a multimeter (electrouniversity)īlower motor resistors come in many shapes and sizesĭepending on how your particular model year of Silhouette’s blower motor resistor question, it will still be able to turn on the blower motor when you turn the speed all the way up. If air starts blowing at full blast, suspect the blower motor resistor. If all the dash lights are on, the climate control system looks like it should be working, and no air moves, you should suspect the blower motor.īefore replacing it, turn the fan up to its highest setting. If you don’t hear any noise coming from the blower motor, the air conditioner not working check these two items.īlower motors are known to fail without warning. However, there are a few less common reasons as well. When there’s no air flowing through the van’s cabin, a bad blower motor usually causes this scenario. If your Oldsmobile Silhouette has no air moving through the climate system at all, that’s a lot easier to diagnose than the air that is blowing not being cool enough. There are just too many variables otherwise. No air moving at all is usually a bad blower motor.When the cooling system is suddenly not blowing cool enough, check the condenser up front for debris (quick and easy).Knowing whether or not the system has a charge is vital to a proper diagnosis. The other two deal with air temperature, and there can be quite a few causes for a failure to cool condition. The first section, not blowing air at all, is pretty straightforward. Jump straight to the one that best describes what is going on with your Silhouette. Not blowing air at allNot blowing cold enoughNot blowing cool air This article is broken down into these three sections to help save you time repairing your Silhouette’s broken AC system: There are A LOT of issues that can cause your van’s air conditioner to fail. If your Oldsmobile Silhouette’s AC system is not working, it can be uncomfortable and downright dangerous on a hot day.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |