When I turn my air conditioning on, the car makes a kind of funny noise like a creaking almost and the RPM's go down to almost 0 every 2 seconds or so. Any ideas? Compressor? A pulley? How hard would it be to pick up a Helms and try to troubleshoot?

Rubens

 

the rpms are almost expected to drop if your are sitting still, cause the engine has to work to turn another belt/accesory. Not sure about your noise though.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rubens &raquo;</TD></TR><TR><TD CLASS="quote">... How hard would it be to pick up a Helms and try to troubleshoot?</TD></TR></TABLE>Helm book is EASY to buy but not cheap. http://www.helminc.com
With that book the troubleshooting should be easy. It's very detailed.

Let me guess...
The IACV is supposed to compensate for the AC compressor so the idle holds steady. Mine works just fine at idle. But if the compressor has MUCH more drag than it's supposed to, it'll drag down the idle.

Your compressor should take a couple minutes to cycle. Every 2 seconds is WAY too often for the compressor to clutch in. That might be your system is overcharged with refrigerant, or the expansion valve is plugged.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rubens &raquo;</TD></TR><TR><TD CLASS="quote">When I turn my air conditioning on, the car makes a kind of funny noise like a creaking almost and the RPM's go down to almost 0 every 2 seconds or so. Any ideas? Compressor? A pulley? How hard would it be to pick up a Helms and try to troubleshoot?

Rubens</TD></TR></TABLE>

my car is the same way. theres definatly loss in power for me. but im wondering if everyone elses rpm almost go down drastically while at a stop as well...

 

Now there are no more noises but a horrible almost burning smell. the rpm's instantly go down. Any ideas?

 

^

 

same thing happpened to me
when i turn on the ac the rpm will drop and the car will did if every put in nutural
my solution
bad ecu. the ecu was not giving the car gas and compansating for the ac drag

all my problems was solved with another ecu

 

Rubens, the burning smell could be your A/C clutch slipping. If the compressor is causing abnormal drag on the pulley, that could cause the rpm drop and the clutch slippage.

 

Do you know what was wrong with the ecu?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Smooth-GSR &raquo;</TD></TR><TR><TD CLASS="quote">Do you know what was wrong with the ecu?</TD></TR></TABLE>
i dont know
i just know that my ac use to stall the car and after i tryed changing ecu's the ac worked fine and the idel was rock steady. something was just wrong with my ecu and it dident compansate for the ac drag

 

My car's idle usually increases to 1000 RPM, it also does this when the lights are on. On occasion it will stay around 700 and run rough with some squeaky noise.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rubens &raquo;</TD></TR><TR><TD CLASS="quote">Now there are no more noises but a horrible almost burning smell. the rpm's instantly go down. Any ideas?</TD></TR></TABLE>Have you actually looked around at the compressor & drive belt? Sounds like the compressor finally seized up completely & the belt burned up.

 

the noise should be comming from ur ac fan thing inside the car called the blower