How to test Mercedes-Benz 190 tempmatic ACC?
To test, select the top button (max AC) and then the button with the two boxes on it, meaning the center and side vents. The system must pass several internal tests before the compressor comes on. Recently my compressor stopped working, but I noticed that it coincided with the failure of my tachometer.
Why are the fans on my Mercedes 190 not working?
ELECTRIC FAN AND ENGINE FAN TROUBLESHOOTING –It seems that every few years, both fans stop working. Oftentimes it is the red three pole temperature switch, and the system is fairly easy to test. The idea is that when the switch is heated by the coolant to a certain temperature, the switch provides a path to ground and the fans engage.
Why is my gas compressor not working on my Mercedes 190?
If your car has an overload relay, and the fuse is bad or the contacts are dirty, the compressor may not work as it should. If you find that the gas has leaked out of your system, and you need a recharge, ask the shop to recharge the system and add their special yellow/green dye.
Why does my car air conditioner not turn on?
If your compressor has gas, then it should quickly cool down your car. If the evaporator temperature sensor opens, then the air conditioner will not kick on either. If the clutch slips on the compressor, due to either dirt or a bad electrical connection, then the compressor will shut off.
To test, select the top button (max AC) and then the button with the two boxes on it, meaning the center and side vents. The system must pass several internal tests before the compressor comes on. Recently my compressor stopped working, but I noticed that it coincided with the failure of my tachometer.
Why is my Mercedes 190 not getting cold?
One of the internal tests is that the compressor must be spinning at the same rate as the engine. If anything prevents this, then no cold. This includes oil on the belt, or belt slippage of any kind, or in my case, a faulty engine RPM sensor.
Why is my tachometer not working on my Mercedes 190?
The system was told that the engine is not spinning, but the compressor is, and it failed the test. If you have a diesel and your tachometer is not working, take a look at the RPM sensor. It is mounted on the engine bell housing, on the same side as the oil level sensor, just a bit farther back.
Is there a problem with my Mercedes air pump?
If your Mercedes sounds like a a jet engine in the morning or a circular saw when you start the engine you probably have a problem with the Secondary Air pump – It might be a free repair or very expensive – Mark shows you the problem, the tools needed to fix it and how you might get it fixed for free under a little known warranty Loading…
ELECTRIC FAN AND ENGINE FAN TROUBLESHOOTING –It seems that every few years, both fans stop working. Oftentimes it is the red three pole temperature switch, and the system is fairly easy to test. The idea is that when the switch is heated by the coolant to a certain temperature, the switch provides a path to ground and the fans engage.