Surging at high RPMs - Page 2

SSDan · 04-04-2017, 06:00 PM

Quote:

Originally Posted by 17ZL1Camaro

I would not be happy either. Call and talk to the Service Manager.

Agreed! I can't believe they just didn't set you up in a loaner right up front. Its obvious you have a warranty issue. I'd be really disappointed with that response from my dealer. Call the service manager. Good luck, be nice the first time and give 'em hell after that if the response doesn't change.

Sooner Cole · 04-05-2017, 11:17 AM

let us know how this turns out!

geaux_tigerss · 04-05-2017, 05:52 PM

Latest. Called and complained to service manager. Got a loaner.

As for the car. They replaced the camshaft position solenoid. The problem was not fixed. They asked if I had tuned or had a programmer on it because the tech was getting some "weird" readings from the ECM and he thinks they need to replace it. Apparently GM gets involved when they request a new ECM. Luckily other than window tint and a bit of vinyl the car is bone stock. Will update as I learn more.

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glamcem · 04-05-2017, 07:57 PM

it sounds like the symptoms are the same with this:

http://www.camaro6.com/forums/showthread.php?t=487290

geaux_tigerss · 04-08-2017, 09:05 AM

Conclusion.

They changed the ECM and that cleared the CEL and they tried to give me the car back. I picked it up and hadn't even left the parking lot before it started surging and the CEL returned. Guess they didn't test drive? Anyway left it there again.

The service manager ending up finding the real problem the next day. There is a wiring harness near the bottom of the motor in the front just left of center. It was rubbing on a belt and had lost some insulation allowing 2 wires to touch. They repaired it.

The car is now driving perfectly. Acceleration is smooth and hard throughout the RPM range. I tested it thoroughly.

This made me realize that yesterday is probably the first time I had driven the car hard in perfect condition. That little high RPM surge has always existed for me. And thinking back, I remember a few little weird mid RPM surges every now and again. Glad it's fixed.

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SSDan · 04-08-2017, 09:38 AM

Excellent news. While it was a bit of a torturous journey for you - I'm glad in the end it was a simple, straight forward fix. It seems to me (I may be imagining it) that I remember reading another post that was similar. The car was running weird and they found some wires rubbed through by the belt.

Now I have to go look.

Enjoy the new found power that you can use with confidence.

04-05-2017, 11:17 AM	#16
Sooner Cole Drives: 2019 ZL1-1LE A10 Join Date: Jan 2017 Location: Oklahoma Posts: 512	let us know how this turns out! __________________ 19 ZL1-1LE A10

04-05-2017, 05:52 PM	#17
geaux_tigerss Drives: 2019 GMC Sierra 1500 AT4 Join Date: Nov 2011 Location: Orange, TX Posts: 740	Latest. Called and complained to service manager. Got a loaner. As for the car. They replaced the camshaft position solenoid. The problem was not fixed. They asked if I had tuned or had a programmer on it because the tech was getting some "weird" readings from the ECM and he thinks they need to replace it. Apparently GM gets involved when they request a new ECM. Luckily other than window tint and a bit of vinyl the car is bone stock. Will update as I learn more. Sent from my iPhone using Tapatalk __________________ 2019 GMC Sierra 1500 AT4 Summit White 6" Lift, 37x13.50R24's

04-05-2017, 07:57 PM	#18
glamcem Drives: '19 RivrsdBlu 1LE ('17 1LE HB sold) Join Date: Nov 2016 Location: Seattle Posts: 1,686	it sounds like the symptoms are the same with this: http://www.camaro6.com/forums/showthread.php?t=487290 __________________ Link to my build thread YouTube Page

04-08-2017, 09:05 AM	#19
geaux_tigerss Drives: 2019 GMC Sierra 1500 AT4 Join Date: Nov 2011 Location: Orange, TX Posts: 740	Conclusion. They changed the ECM and that cleared the CEL and they tried to give me the car back. I picked it up and hadn't even left the parking lot before it started surging and the CEL returned. Guess they didn't test drive? Anyway left it there again. The service manager ending up finding the real problem the next day. There is a wiring harness near the bottom of the motor in the front just left of center. It was rubbing on a belt and had lost some insulation allowing 2 wires to touch. They repaired it. The car is now driving perfectly. Acceleration is smooth and hard throughout the RPM range. I tested it thoroughly. This made me realize that yesterday is probably the first time I had driven the car hard in perfect condition. That little high RPM surge has always existed for me. And thinking back, I remember a few little weird mid RPM surges every now and again. Glad it's fixed. Sent from my iPhone using Tapatalk __________________ 2019 GMC Sierra 1500 AT4 Summit White 6" Lift, 37x13.50R24's

04-08-2017, 09:38 AM	#20
SSDan Drives: 2016 1SS 6MT NPP Join Date: Feb 2010 Location: Lake Murray, SC Posts: 2,245 View My Garage	Excellent news. While it was a bit of a torturous journey for you - I'm glad in the end it was a simple, straight forward fix. It seems to me (I may be imagining it) that I remember reading another post that was similar. The car was running weird and they found some wires rubbed through by the belt. Now I have to go look. Enjoy the new found power that you can use with confidence. __________________ 2016 Camaro 1SS Hyper Blue 6MT NPP 2010 Camaro 2SS Cam/Headers/CAI/3.91 gears 476 rwhp/440 rwtq (sold)

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