P0305 code - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

ozzy1le · 09-29-2018, 10:58 AM

So I went to the strip last night and got 3 runs in and on the way back I got the service stabilitrak and cel. Pulled the code and it says p0305 and cel is flashing. Swapped plugs and it came back on again. Swapped plug wires and it came back on. Lastly I swapped coils and it still came back on. Any ideas what to look at next?

ozzy1le · 09-29-2018, 12:04 PM

Just pulled the valve cover and the #5 intake rocker was loose and I pulled the pushrod and it was perfectly straight. Reassemble and codes went away. I think I dodged a bullet

15RS2NV · 09-29-2018, 07:58 PM

Sounds like it. Nice job!

christianchevell · 09-30-2018, 08:28 AM

Hope you carefully inspected the Trunnion , its not normal for one rocker to walk itself loose...……….

Norm Peterson · 09-30-2018, 08:40 AM

Keep an close eye out for further loosening, which could mean that the stud is pulling out (unscrewing? not sure what kind of studs are used). Or worse (cam lobe & lifter).

Norm

ozzy1le · 09-30-2018, 01:32 PM

They are the stock studs. Didn't notice the trunion loose at all. The head didn't appear to be stripped either. Was able to torque it back down. I may pull the valve cover and look again but I did think it was weird that it came loose.

09-29-2018, 10:58 AM	#1
ozzy1le Drives: 2015 camaro 1le Join Date: Jun 2015 Location: pasco wa Posts: 233	P0305 code So I went to the strip last night and got 3 runs in and on the way back I got the service stabilitrak and cel. Pulled the code and it says p0305 and cel is flashing. Swapped plugs and it came back on again. Swapped plug wires and it came back on. Lastly I swapped coils and it still came back on. Any ideas what to look at next?

09-29-2018, 07:58 PM	#3
15RS2NV Ponies are for girls Drives: 2015 RS LFX Red Hot A6 Join Date: Sep 2018 Location: Southern AZ Posts: 315 View My Garage	Sounds like it. Nice job! __________________ H&R 1.8/1.7” drop, Overkill 80mm + intake ported by AFS, 1" insulator MACE, Accel Super Coils, THR cai, JET MAF sensor, Hurst shifter handle, GPP strut tower brace, CI ice cube tray hood vents (functional) @SemperFiCamaro

09-30-2018, 08:28 AM	#4
christianchevell old school chevy rodder Drives: 2013 2SS/RS Manual,DM exhaust,CRT Join Date: Jul 2012 Location: Oregon Posts: 5,587 View My Garage	Hope you carefully inspected the Trunnion , its not normal for one rocker to walk itself loose...………. __________________ 2021 Wild Cherry ZL1 A10, Sunroof, Data, Carbon, Nav, RotoFab Dry CAI, Elite x2, Borla ATK, Driveshaft shop

09-29-2018, 12:04 PM	#2
ozzy1le Drives: 2015 camaro 1le Join Date: Jun 2015 Location: pasco wa Posts: 233	Just pulled the valve cover and the #5 intake rocker was loose and I pulled the pushrod and it was perfectly straight. Reassemble and codes went away. I think I dodged a bullet

09-30-2018, 08:40 AM	#5
Norm Peterson corner barstool sitter Drives: 08 Mustang GT, 19 WRX Join Date: Jul 2012 Location: Eastern Time Zone Posts: 6,990	Keep an close eye out for further loosening, which could mean that the stud is pulling out (unscrewing? not sure what kind of studs are used). Or worse (cam lobe & lifter). Norm __________________ '08 GT coupe 5M (the occasional track toy) '19 WRX 6M (the family sedan . . . seriously)

09-30-2018, 01:32 PM	#6
ozzy1le Drives: 2015 camaro 1le Join Date: Jun 2015 Location: pasco wa Posts: 233	They are the stock studs. Didn't notice the trunion loose at all. The head didn't appear to be stripped either. Was able to torque it back down. I may pull the valve cover and look again but I did think it was weird that it came loose.