yes they do go bad and leak usually when the plug that plugs in to it is removed they leak from the electrical connectors when worn
Yes, oil can leak through the switch.
Well, I have an 89 jeep wrangler with a really bad oil leak, and I just found it, it's the oil pressure switch. I can see the oil leaking with the motor running. I called my favorite mechanic and he said definitely, that's the problem. I'm off to replace it now.
There are several possible reasons. One would be the Pressure Switch being set too high. Another could be a plugged Jet, or Impeller.
Usually you will not get an accurate oil pressure reading either too high or too low. Occasionally they will leak and pump oil through the switch
bad switch or vacuum leak
Probably running it through the engine and out the exhaust via a bad head gasket.
IF ONE OF YOUR FUEL PUMPS IS BAD IT WILL NOT BUILD PRESSURE IN THE LINE BECAUSE IT WILL LEAK BACK TO THE BAD PUMP
yes.
Low on freon, faulty pressure switch, faulty clutch. Jumper the low pressure switch with a paperclip (can running, AC on), if the clutch cycles, it's either low on freon, or the low pressure switch is bad.
bad check valve or a leak.
You have a leak in the cooling system. Pressure builds up after 20-30 minutes of running and a leak anywhere in the system is going to get worse.