Question for the Procherger people - squeal on cold start - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

agent5 · 01-19-2016, 01:27 PM

Almost ever since I got my Procharger installed (i1) it had a tendency to squeal for anywhere from 10-15 seconds to a minute after a cold (sitting overnight) start. Once things got going it never made a sound and even after going back to the car after 8 hours work it started up as quiet as I would expect.

I made a video of the cold start this morning (it's about upper 38-40 in my garage so not arctic).

Any insights welcome. I thought maybe belt but I'm not 100% sure. Needless to say, I always let my car warm up before driving and I don't even allow boost to happen until the entire car is at operating temperature, oil, transmission, coolant etc.

Video:
https://www.dropbox.com/s/9soxxgeqxd...%20PM.mov?dl=0

D3R3K · 01-21-2016, 12:33 AM

Replace the belt.

Js2fst · 01-21-2016, 12:59 AM

Tighten belt if it doesn't fix it replace belt. How much rwhp and are you on a twelve rib

agent5 · 01-21-2016, 11:11 AM

Hi Guys,
Thanks for the reply. I actually was able to hit Procharger support up and they said the following:
"After reviewing the video clip as well as having our engineering manager listen to the noise in question we both agree that the noise you are hearing is normal. The noise at startup will generally fluctuate as the car is in closed loop and looking for a stable idle rpm, at a lower idle rpm the unit may sound slightly louder due the harmonics of the engine and the backlash in the gear set of the I-1. As long as the noise dissipates when increasing engine rpm this would be normal, if the sound was to become more pronounced when increasing rpm then this would be of concern. Please let me know if you have any further questions or concerns regarding this."

So it seems like this is a normal cold start. It goes away after a moment and a tiny bit of throttle also makes it go away.
Hopefully this thread will help someone else if they run in to a similar sound.
-D

agent5 · 01-21-2016, 11:13 AM

Oh and in response to the question above, It's the stock kit i1 procharger, it gets to around 7.5 PSI and is supposed to give around ~570RWHP. I'm finally going to dyno in a few weeks, the shop I did the work at is waiting for a dyno retard repair.
-D

01-19-2016, 01:27 PM	#1
agent5 Drives: 2013 Camaro SS (+RS) + Hurst+ DME Join Date: Sep 2012 Location: Saint Louis, MO,United States Posts: 147	Question for the Procherger people - squeal on cold start Almost ever since I got my Procharger installed (i1) it had a tendency to squeal for anywhere from 10-15 seconds to a minute after a cold (sitting overnight) start. Once things got going it never made a sound and even after going back to the car after 8 hours work it started up as quiet as I would expect. I made a video of the cold start this morning (it's about upper 38-40 in my garage so not arctic). Any insights welcome. I thought maybe belt but I'm not 100% sure. Needless to say, I always let my car warm up before driving and I don't even allow boost to happen until the entire car is at operating temperature, oil, transmission, coolant etc. Video: https://www.dropbox.com/s/9soxxgeqxd...%20PM.mov?dl=0

01-21-2016, 12:33 AM	#2
D3R3K Sittin side ways Drives: 2010 2SS/RS IOM Join Date: Nov 2012 Location: Arlington,Tx Posts: 232	Replace the belt. __________________ 850+hp club member Procharger F1-A

01-21-2016, 12:59 AM	#3
Js2fst 2010 transformer Drives: 2010 ss camaro Join Date: Nov 2014 Location: Lee's summit mo Posts: 591	Tighten belt if it doesn't fix it replace belt. How much rwhp and are you on a twelve rib __________________ 2010 transformer, vertical doors, 315nt05 rears, pedders supercar coilovers, hotchkis sway bars, links, adjustable, toe bars, bmr poly cradle bushings, 1le control arms, bmr tunnel brace, bmr subframe connectors. Cam 227/239-623-620@114 Mast medium bore heads, sw 1 7/8 headers, cat delete, x pipe, 3" dynomax true duals, fuel rails, fast 102 intake and NW 102 throttle body, catch can, rotofab cai, shifter, raptor custom shift light. Dss drive shaft, 3.91 gears. 492 rwhp

01-21-2016, 11:11 AM	#4
agent5 Drives: 2013 Camaro SS (+RS) + Hurst+ DME Join Date: Sep 2012 Location: Saint Louis, MO,United States Posts: 147	Hi Guys, Thanks for the reply. I actually was able to hit Procharger support up and they said the following: "After reviewing the video clip as well as having our engineering manager listen to the noise in question we both agree that the noise you are hearing is normal. The noise at startup will generally fluctuate as the car is in closed loop and looking for a stable idle rpm, at a lower idle rpm the unit may sound slightly louder due the harmonics of the engine and the backlash in the gear set of the I-1. As long as the noise dissipates when increasing engine rpm this would be normal, if the sound was to become more pronounced when increasing rpm then this would be of concern. Please let me know if you have any further questions or concerns regarding this." So it seems like this is a normal cold start. It goes away after a moment and a tiny bit of throttle also makes it go away. Hopefully this thread will help someone else if they run in to a similar sound. -D

01-21-2016, 11:13 AM	#5
agent5 Drives: 2013 Camaro SS (+RS) + Hurst+ DME Join Date: Sep 2012 Location: Saint Louis, MO,United States Posts: 147	Oh and in response to the question above, It's the stock kit i1 procharger, it gets to around 7.5 PSI and is supposed to give around ~570RWHP. I'm finally going to dyno in a few weeks, the shop I did the work at is waiting for a dyno retard repair. -D