Loss of power

[slcpunk]

Step daughter's 05 Turbo PT convertible. Says car makes a loud whining sound on acceleration and has a loss of power. No CEL. Mileage nearly 60k.

Any suggestions before I take a look see? I have yet to see/her the issue yet so her interpretation may be different than mine, I'll have to see tomorrow.

Thanks in advance.

[quicksilverdon]

Welcome.
Suspect a boost leak. Follow the hoses to/from the intercooler and be sure they are on tight.

[slcpunk]

OK, I just checked out the car and nothing at all like she described. Power is fantastic, car idles fine but there is a weird click from the engine bay after the turbo kicks in. Sounds almost like automatic doors locks being locked. I punched the car a few times and drove it aggressive off the line and it did not make that sound. Seems at moderate speeds I here the light "click", it's very distinct sound and only once. Like something is stuck and then closing into place? Ideas? It certainly was not there last week.

[quicksilverdon]

Do you have defrost or A/C on? The A/C compressor clutch make a click...

[slcpunk]

Interesting, I'll have to take it for a spin and see if that was it. I am pretty sure I had it off however as I asked her if the AC was on when the noise was made. I thought I was paranoid about car noises, this girl has me beat by a mile! Thanks for the input, it's appreciated.

[bobdole369]

I'm quite sure now that you mention the power door lock sound - that that was the A/C clutch. Its a dead ringer, at least on my own and my wifes PT's.

Other noises you'll notice (quite common ones at least) - fuel injectors are a ticking regular metallic sound, on older models with worn lash adjustors - a tapping almost fingernail sound, with airbox modded turbos - a woosh when you hit the gas, and even without an aftermarket BOV - you can hear the stock click and woosh when you let off the gas. With bad suspension bushings there is a cracking or thunking as you turn or hit bumps or stop. A bad wheel bearing sounds almost like worn brakes - a slightly metallic rotating machine sound as the wheel moves.

[quicksilverdon]

Originally Posted by slcpunk

Interesting, I'll have to take it for a spin and see if that was it. I am pretty sure I had it off however as I asked her if the AC was on when the noise was made. I thought I was paranoid about car noises, this girl has me beat by a mile! Thanks for the input, it's appreciated.

Defrost turns on the A/C also.

[slcpunk]

Originally Posted by quicksilverdon

Defrost turns on the A/C also.

I've read this after a few searches, thanks for the heads up though. So, does this mean it's a faulty clutch? Or just a quirk of the car and should not be addressed?

[quicksilverdon]

Don't think clutch is faulty - whenever A/C "cycles", the clutch clicks.

[slcpunk]

Thanks for the help.