2012 v6 reluctor wheel skipped teeth - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Earnhardtfan77 · 07-29-2017, 03:19 PM

I have been having a idle issue for about 3 or 4 months where the idle would surge on a startup for about 10 to 15 seconds or so. go from 600-1200-600-1200 and then eventually come down and level out.. after that I got the codes p0016 p0017 p0018 p0019 so I checked the codes and found out that is could be timing chain stretch.. so I had the mechanic replace my timing chains, but that weird idle was still there, the codes returned about 150 miles later so I brought it back.

mechanic just called me and told me the reluctor wheel has skipped 2 teeth. He said he has seen some tsb's that show some that have skipped three teeth. He is telling me in order to fix this issue he has to drop the subframe remove the timing cover again and pull the crank to replace/re-position the reluctor wheel. Can I drive the car like this without it be doing any engine damage. What happens if it skips more teeth, and what caused this to happen?

secrethero89 · 03-02-2021, 12:28 PM

i had the same issue. were you able to fix yours?

AlanRubin · 03-02-2021, 01:50 PM

It does not skip teeth, it slips. It is an interference fit onto the crank, and presses
on. The fix is a set-screw, but I don't think you can do it with the crank in the motor.
The set screw fastens the reluctor wheel to the counter balance weight on the crank.

Jasper has a kit that has an alignment jig, that assures the proper position of the
reluctor wheel, and a guide for the drill bit, and a setscrew.
https://youtu.be/w4mbn6GRpKc

redcoats1976 · 03-02-2021, 02:45 PM

geez...hope this is not a common problem.

NXTLEVL · 03-02-2021, 04:06 PM

The question is less of how to fix it, (crank out, new wheel, weld into place) than why did it happen. I went through the same issue a little while back. I'm heavily modded so it took a while to track it down but for this to happen on a stock application is weird to say the least. AlanRubin is right. It's an interference fit and slips on the crank. Typically this happens when adding boost like a turbo or supercharger although turbos are more common because of the way the power is delivered (big hit as opposed to linear like a supercharger).

You need to determine why it spun or it most likely will do it again. In my case the crank had never been finish balanced. Don't ask me how we figured that but know it took countless hours and cross-referencing the codes from the crank all the way back to the manufacturer. On a stock crank the likelihood of this being the case is near 0 but if the crank comes out, which it will need to, it behooves you to get it checked for balance.

mikeman · 03-03-2021, 02:12 PM

I wonder why GM didn't stake the reluctor wheel on the crank? For something so important just being slip fit on the crank sounds like a recipe for disaster.

CamaroCracka · 03-03-2021, 04:16 PM

Not just GM. I had a reluctor wheel on a brand new Eagle stroker crank out of sync.

secrethero89 · 05-20-2021, 02:07 PM

Is this also common on V6 3.6 engines? i probably had the same issue. How is the replacement exactly?

AlanRubin · 05-20-2021, 11:13 PM

Quote:

Originally Posted by secrethero89

Is this also common on V6 3.6 engines? i probably had the same issue. How is the replacement exactly?

Same deal, they're pressed on.

https://www.autoserviceprofessional....tor-wheel-woes

PaulsSS · 05-22-2021, 10:21 AM

Believe it or not its possible to fix it in the car but its not easy. Probably just faster to pull the engine, line it back up then drill and tap it or tack weld it. Shame they won't cover it out of warranty.

secrethero89 · 05-26-2021, 06:00 AM

Quote:

Originally Posted by PaulsSS

Believe it or not its possible to fix it in the car but its not easy. Probably just faster to pull the engine, line it back up then drill and tap it or tack weld it. Shame they won't cover it out of warranty.

hi paul, how can we fix this issue? Could you please tell more about the procedure?

PaulsSS · 05-26-2021, 09:01 AM

Line it back up and stake it. Not as easy as it sounds for sure.

07-29-2017, 03:19 PM	#1
Earnhardtfan77 Drives: Summit White 2012 1LT/RS Join Date: Dec 2010 Location: California Posts: 191	2012 v6 reluctor wheel skipped teeth I have been having a idle issue for about 3 or 4 months where the idle would surge on a startup for about 10 to 15 seconds or so. go from 600-1200-600-1200 and then eventually come down and level out.. after that I got the codes p0016 p0017 p0018 p0019 so I checked the codes and found out that is could be timing chain stretch.. so I had the mechanic replace my timing chains, but that weird idle was still there, the codes returned about 150 miles later so I brought it back. mechanic just called me and told me the reluctor wheel has skipped 2 teeth. He said he has seen some tsb's that show some that have skipped three teeth. He is telling me in order to fix this issue he has to drop the subframe remove the timing cover again and pull the crank to replace/re-position the reluctor wheel. Can I drive the car like this without it be doing any engine damage. What happens if it skips more teeth, and what caused this to happen? __________________ 2012 Summit White 1LT/RS Cold Air Inductions CAI, VMaxx ported throttle body, RX catch can, Led Interior Lights, Led License plate lights, Hood Spears, Blacked Out Rear Trunk panel, Gills, Blacked Out Front Fascia, and Bow tie

03-03-2021, 04:16 PM	#7
CamaroCracka Drives: 2010 Turbo LS3 Join Date: Dec 2009 Location: Palm Bay, FL Posts: 2,736	Not just GM. I had a reluctor wheel on a brand new Eagle stroker crank out of sync. __________________ 2010 SS - On3 kit with downpipe cutout, CTR 78/80, CompCam 239/251 620/632 122+4, E85, Z28 suspension and ZL1 diff with Outlaw axles. Gen6 ZL1/1LE brakes. 2011 Vert - 416/w 230/236 .612/.602 115lsa, 1LE suspension w/32mm rear bar. Z28 diff. ZL1 brakes.

03-02-2021, 12:28 PM	#2
secrethero89 Drives: 2011 3.6 V6 RS Cabrio Join Date: Mar 2019 Location: Europe Posts: 31	i had the same issue. were you able to fix yours?

03-02-2021, 01:50 PM	#3
AlanRubin Banned Drives: 2010 LS Join Date: Feb 2021 Location: Pgh Posts: 411	It does not skip teeth, it slips. It is an interference fit onto the crank, and presses on. The fix is a set-screw, but I don't think you can do it with the crank in the motor. The set screw fastens the reluctor wheel to the counter balance weight on the crank. Jasper has a kit that has an alignment jig, that assures the proper position of the reluctor wheel, and a guide for the drill bit, and a setscrew. https://youtu.be/w4mbn6GRpKc

03-02-2021, 02:45 PM	#4
redcoats1976 Drives: LT W/2LT,blue metallic Join Date: Jul 2016 Location: central florida Posts: 4,915	geez...hope this is not a common problem.

03-02-2021, 04:06 PM	#5
NXTLEVL Drives: 2010 Camaro SS/RS Twin Turbo LSX454 Join Date: Aug 2018 Location: Detroit, MI Posts: 143 View My Garage	The question is less of how to fix it, (crank out, new wheel, weld into place) than why did it happen. I went through the same issue a little while back. I'm heavily modded so it took a while to track it down but for this to happen on a stock application is weird to say the least. AlanRubin is right. It's an interference fit and slips on the crank. Typically this happens when adding boost like a turbo or supercharger although turbos are more common because of the way the power is delivered (big hit as opposed to linear like a supercharger). You need to determine why it spun or it most likely will do it again. In my case the crank had never been finish balanced. Don't ask me how we figured that but know it took countless hours and cross-referencing the codes from the crank all the way back to the manufacturer. On a stock crank the likelihood of this being the case is near 0 but if the crank comes out, which it will need to, it behooves you to get it checked for balance.

03-03-2021, 02:12 PM	#6
mikeman Banned Drives: 2015 Camaro Join Date: Aug 2018 Location: My Garage Posts: 1,125	I wonder why GM didn't stake the reluctor wheel on the crank? For something so important just being slip fit on the crank sounds like a recipe for disaster.

05-20-2021, 02:07 PM	#8
secrethero89 Drives: 2011 3.6 V6 RS Cabrio Join Date: Mar 2019 Location: Europe Posts: 31	Is this also common on V6 3.6 engines? i probably had the same issue. How is the replacement exactly?

05-22-2021, 10:21 AM	#10
PaulsSS Drives: 15SS Camaro Join Date: Dec 2020 Location: US Posts: 346	Believe it or not its possible to fix it in the car but its not easy. Probably just faster to pull the engine, line it back up then drill and tap it or tack weld it. Shame they won't cover it out of warranty.

05-26-2021, 09:01 AM	#12
PaulsSS Drives: 15SS Camaro Join Date: Dec 2020 Location: US Posts: 346	Line it back up and stake it. Not as easy as it sounds for sure.