Most likely a failing 'temp blend' or 'vent mode' actuator ( a/c door motor) .
SOURCE: Air conditioning fan makes loud noise the faster you ru it.
Concerning your broken vent -- this can be caused by a broken linkage or a malfunctioning servo motor as well. these vent have air ducts the sway back and forth to adjust the dual air flow function. if the servo o linkages are malfunctioning or not connected for some reason, it will not allow total control of the air flow and temperature range. Now, if you have a combination of a flow error and temperature error as well, thai can be caused by a combination of the two.
In this case, you will need to inspect the linkages as well as the servo motor function as well. in addition, i would test the air temp sensors for there operational value. they control the temp when you adjust the coll or hot function.
Concerning the Loud noise coming from the blower fan---
This issue can be caused by a misalignment within the blower housing or, it can also be caused by some minor damage within the motor itself, causing it to rotate in a erratic manner, in return, forcing it to rub against the housing itself. the best solution here is to extract this blower fan housing and inspect for lose fan propeller and motor stability. replace parts accordingly.
PLease rate and have a great day:)
SOURCE: motor ticks
Check out the exhaust manifold.
When it heats up the metal expands and closes the gap on the leak a little. When it cools down the metal contracts and the leak is loud when you first start up.
What your describing sounds like a exhaust manifold leak.
SOURCE: I Have a 1988 Chevy 454 motor in an RV. I have
Most electric pumps have a low hum to them. There are some that pulse, but I have never seen one just click. You may have a bad pump. Good Luck
SOURCE: when i start my truck
The sound you are hearing is an exhaust leak. Sounds like a ticking noise, goes away when driving, but can be heard when sitting. You probably have a bad manifold gasket, or loose clamp or broken weld on exhaust. Best way to tell is start it up and listen as to find leak. Or take to a muffler shop and have them repair it.
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