Air conditioner/heat

[Jean]

Just replace the switch, or remove it and clean it.

Does the noise go away when you are not driving? If it's only present or changes with driving then it's most likely not the fuel pump but more of a drive-train issue (driveshaft, differential, axles for example). If you turn the car on and the noise is present right away, then it might be the pump.

If you have an early car, then it might have two fuel pumps, one is infront of the driver side rear wheel and one is inside the fuel tank. If you have a late model car, then it's just the in-tank pump under the back seat.

[Van Westervelt]

Also, if your rear seat is out, you will usually hear a hum from the fuel pump slightly. And they do get louder with age in my experience.

[Redfox]

Actually it's on as soon as the car is started. And yes Van It is an 88 so it would make sense.


Thank you both so very much, you've been more help than you could ever imagine!

[Truman]

UPDATE:

Took the car out tonight with an old plate, couldn't resist waiting anymore to register. Runs like a champ. But I messed with the settings.

One, the defroster switch gets stuck when you press it in. How do I fix this?

Two, air (not cold) for AC blows out, but ONLY on setting 4.
Air (semi warm heat) blows out ONLY on setting 4.
No other settings work when it comes to blowing anything out except setting 4.

What does this mean?
What do you think is wrong with it?

Also, I noticed when driving there is a whining and vibrating coming from what i believe is the fuel pump, and it's like a high pitched hum. Any ideas?

Keep in mind that I haven't taken it for a tune up yet.

Thanks

Rach

Thanks for sharing. I don't have an idea about how to solve these problem. Keep updating.