Clicking Noise From Engine / Ac

[Moek2000]

I have a 98 ES 300 w/ 145,000 miles and I have two problems:

1. Engine makes a clicking noise which gets faster when I push on the pedal but sometimes goes away after driving a long period of time.

2. As soon as I turn on the AC switch (not air, but AC switch) it makes a loud buzzing sound.

Any suggestions on what those two problems may be?

P.S. A friend told me that it could be the lifters/valves that need replacing, but I can't afford $1,000 right now... Are there any other solutions?

Thanks!

[Eric Cheung]

I have a 98 ES 300 w/ 145,000 miles and I have two problems:

1. Engine makes a clicking noise which gets faster when I push on the pedal but sometimes goes away after driving a long period of time.

2. As soon as I turn on the AC switch (not air, but AC switch) it makes a loud buzzing sound.

Any suggestions on what those two problems may be?

P.S. A friend told me that it could be the lifters/valves that need replacing, but I can't afford $1,000 right now... Are there any other solutions?

Thanks!

Does the noise goes away when the A/C is off? If so, then it seems that A/C compressor is about to go. If the noise is there with the A/C off, then it might be the alternator or power steering pump.

[Moek2000]

Yeah, it does go away when AC button is turned off... I guess I'll get the compressor changed sometime. Thanks! But any idea on the clicking noise from the engine?