So my 02 Maxima is my daily driver car and i use it alot through the day since i like to cruise around highways. Whenever I'm at a red light and i turn on my ac, the car loses power and starts shaking very little but I could feel it.

Also, it starts making a noise whenever i step on the gas after a red light. Makes a noise as if it's low on power and I'm forcing it back. But only for a few seconds.

No codes, only p0442 but it comes and goes now. I don't know why.
I had replaced all front cats, new spark plugs, front 3 ignition coils with used ones , control valve and canister both new, new gas cap , new maf , air filter k&n. I've been using lucas fuel injector cleaner everytime i put gas. Regular gas. The other things still on my list are new fuel injectors, ignition coils new, main catalytic converter , and fuel filter with strainer.

I'm aiming for a better MPG. Feel like it's gettin worse.

 

You clutch on AC compressor might be seizing. The good news is the clutch can be replaced separate from the AC compressor. Bad news most mechanics will just quote you to replace entire compressor. Your AC compressor may be seizing altogether too.

 

So i have a bad clutch meaning this a related transmission work? Also a bad ac compressor? So that is why i keep getting that squeal whenever i turn on the car? Is this a pita job?

 

No. foodmanry said clutch on AC compressor, not transmission. The compressor clutch is part of the pulley where the drive belt goes.

No. Again foodmanry said clutch on AC compressor, not the compressor itself.

This is a maybe, but probably not. The squeal is probably the belt that turns the a/c compressor and the alternator is is slipping. After slipping and squealing for a wile, the belt heats up and expands and stops slipping, at least to the point that it does not squeal. The belt is loose and needs to be tightened, but it probably also needs to be replaced.

I consider replacing the a/c clutch to be a pita. If you are not a seasoned auto repair person, you may be sorry you started the job.

 

What is the engine idle rpm with a/c off? With a/c on?

 

I've tried to look for a replacement clutch for this thing because mine makes a clicking noise.
Nothing... Good luck.

 

Ebay?

http://www.ebay.com/sch/i.html?_from...&_skc=50&rt=nc

Autozone?

http://www.autozone.com/cooling-heat...mString=search

Well...they have the clutch bearing which should be fine so long as the rest of the parts are in good working order. The bearing is the part that fails.

If you buy the bearing make sure you get a sealed one. I don't know how much PITA replacing the AC clutch bearing would be, but I know you don't have to evacuate the AC system. The biggest PITA would be pulling the original clutch off the AC compressor. You can get an AC clutch puller tool for free from Autozone to use.

If you are looking to save money try replacing on your won. Might as well replace the belt while you are at it.

 

Without A/C is 1x RPM and with A/C, drops very little

 

So I see one is saying the bearing and other the clutch.

I'm lost.

I did replaced both serpentine belts. One was performance I forgot where it was installed.
I let the mechanic replace it but maybe he didn't tight it right.

Also, when car is parked and on, the air conditioner will not blow too much unless the car is driving.

Also, even though a/c or heat is OFF, there's still a little bit of ac or heat running through the vent. Very little

 

The clutch gets worn out.
It make clicking noises when working. The bearing gets trashed it'll make
noises all the time not only when turned on.

I don't think the bearing or the clutch is your problem.




You mean the fan won't blow as much at idle?
Mine does that too. Just slightly slower fan speed on 4.
I think it needs better grounds unless it's made to run like that.
R u getting good volts when the a/c is running? I have a feeling it's power related.

 

Yes, the fan won't blow as much as idle. Very poorly.

How can i check the grounding? I think you might be right, there are times when I feel the car loosing power when I'm at a red light. I always think that it's on its way to turn off. Icould feel it. But it doesn't, gets back up right away. This is only for like a sec.