Another cam P0300 code issue - Page 2 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

5150WS6 · 08-14-2022, 12:39 PM

Drove the car home yesterday. Mechanics thrown his hands up. Why didn’t I do this project when I lived next to some race shops?!?!

The car drives fantastic on the freeway and through town. It just will not idle. So stopping sucks. But running wise it sounds and pulls like a monster!

Just have to figure out this $*#% 0300 code. For all the guys that have these big cams I’m amazed that there aren’t better solutions.

Mike

bottletalk · 08-14-2022, 03:00 PM

get yourself a Bluetooth obd2 reader and download the app called torque or get something else that can give u live data. could be something as simple as a vacuum leak....without live data it's all guess work.

5150WS6 · 08-14-2022, 06:27 PM

Bottletalk,
I’ve got the HPTuner MPVI2+ and just uploaded a copy of the data log to the tuner. Hopefully that will help.

bottletalk · 08-14-2022, 10:12 PM

Quote:

Originally Posted by 5150WS6

Bottletalk,
I’ve got the HPTuner MPVI2+ and just uploaded a copy of the data log to the tuner. Hopefully that will help.

awesome, that should get things going in the right direction!

5150WS6 · 08-31-2022, 08:02 PM

Well got it going. It was the tune. Steve has been working with different tunes and finally found the gremlin with the MAF sensor and got it all dialed in. We are still working through some final details on the tune and tweaking it a bit. But all in all was able to take it and wring it out a little today so that felt good!

One thing that's weird to me is the noise the engine makes now after the cam. This is my first cammed car and maybe its normal, but all the lifters and stuff make some good noise. Part of that is I put a vented hood on it so that has to attribute to some of it.

Are aggressive cams and supporting mods just noiser by default?

Thanks to all that got on here and answered questions and helped me out. Glad to have the car up and going! It sounds insane!

morepowerjoe · 08-31-2022, 08:05 PM

Glad you got it going!

5150WS6 · 09-03-2022, 02:31 PM

Well it's going for sure. Runs great. However now I'm still getting the random misfire P0300 code as well as a P0010 code. That's with the best tune I've had so far. Steve redid the tune and turned off the code for both of these and the car went right back into not being able to start again.

I'm stumped.

Did a new MAF sensor thinking that was it but no dice. :(

crank383 · 12-28-2022, 05:56 AM

Try to set spark timing at 20 degrees from 0 to 2000 rpm

chevyz1 · 12-28-2022, 10:09 AM

Earlier in the thread, You mentioned about the chain tensioner and having it not have much pressure against the chain like maybe the spring missing. Changing this to the dogbone LS2 type seems to be the goto one to keep the chain from slapping around. Could there still be too much play in your chain without the tensioner keeping pressure on it and allowing the timing to walk around a little? Just a thought, no expert here.

morepowerjoe · 12-28-2022, 10:49 AM

Quote:

Originally Posted by chevyz1

Earlier in the thread, You mentioned about the chain tensioner and having it not have much pressure against the chain like maybe the spring missing. Changing this to the dogbone LS2 type seems to be the goto one to keep the chain from slapping around. Could there still be too much play in your chain without the tensioner keeping pressure on it and allowing the timing to walk around a little? Just a thought, no expert here.

I've been told that when the engine gets hot the chain tightens.

LS1Formulation · 12-31-2022, 06:03 PM

Just wondering... When you did the kit, did you measure for pushrods and order them to spec?

Badbubba · 01-01-2023, 01:50 AM

Quote:

Originally Posted by 5150WS6

Well it's going for sure. Runs great. However now I'm still getting the random misfire P0300 code as well as a P0010 code. That's with the best tune I've had so far. Steve redid the tune and turned off the code for both of these and the car went right back into not being able to start again.

I'm stumped.

Did a new MAF sensor thinking that was it but no dice. :(

P300 is common with a big cam. To my knowledge, a tuner will turn off that code. Had the P300 after my GPI SS3 install before I got a tune.

08-31-2022, 08:05 PM	#20
morepowerjoe Drives: 2012 Chevrolet Camaro l99 Join Date: Aug 2020 Location: Austin, TX Posts: 2,105	Glad you got it going! __________________ DSS FX Forged Pistons, Eagle ESP L19 Forged Rods, ARP Head and Main Studs, TSP PRC 260 CNC Ported Heads milled .030, Cometic .040 Head Gaskets, GPI SS3 VVT Camshaft, GM Performance Racing Lifters, CHE Trunnions , Molly Pushrods, Melling 10355HV Oil Pump, Cold Air Inductions CAI, Fast LSXR Intake Manifold, Nick Williams 103 TB, TSP 1 7/8" Longtubes with 3" TSP Exhaust, ZL1 Fuel Pump, Mishimoto Radiator, Mishimoto Oil Cooler, Tru Cool 40k Tranny Cooler, 3600 Circle D Converter, Fluid Dynamics Balancer Build Thread https://www.camaro5.com/forums/showthread.php?t=609817

12-28-2022, 10:09 AM	#23
chevyz1 Wife named it "Ghost" Drives: 2012 Camaro Summit White 2SS/RS M6 Join Date: Jan 2017 Location: NM Posts: 64 View My Garage	Earlier in the thread, You mentioned about the chain tensioner and having it not have much pressure against the chain like maybe the spring missing. Changing this to the dogbone LS2 type seems to be the goto one to keep the chain from slapping around. Could there still be too much play in your chain without the tensioner keeping pressure on it and allowing the timing to walk around a little? Just a thought, no expert here. __________________ 2012 2SS/RS Camaro M6 Summit White

08-14-2022, 12:39 PM	#15
5150WS6 Drives: 2011 Camaro SS Join Date: Apr 2013 Location: Oregon Posts: 38	Drove the car home yesterday. Mechanics thrown his hands up. Why didn’t I do this project when I lived next to some race shops?!?! The car drives fantastic on the freeway and through town. It just will not idle. So stopping sucks. But running wise it sounds and pulls like a monster! Just have to figure out this $*#% 0300 code. For all the guys that have these big cams I’m amazed that there aren’t better solutions. Mike

08-14-2022, 03:00 PM	#16
bottletalk Drives: 15 Camaro 2SS M6 Join Date: Jan 2020 Location: BC Posts: 732	get yourself a Bluetooth obd2 reader and download the app called torque or get something else that can give u live data. could be something as simple as a vacuum leak....without live data it's all guess work.

08-14-2022, 06:27 PM	#17
5150WS6 Drives: 2011 Camaro SS Join Date: Apr 2013 Location: Oregon Posts: 38	Bottletalk, I’ve got the HPTuner MPVI2+ and just uploaded a copy of the data log to the tuner. Hopefully that will help.

08-31-2022, 08:02 PM	#19
5150WS6 Drives: 2011 Camaro SS Join Date: Apr 2013 Location: Oregon Posts: 38	Well got it going. It was the tune. Steve has been working with different tunes and finally found the gremlin with the MAF sensor and got it all dialed in. We are still working through some final details on the tune and tweaking it a bit. But all in all was able to take it and wring it out a little today so that felt good! One thing that's weird to me is the noise the engine makes now after the cam. This is my first cammed car and maybe its normal, but all the lifters and stuff make some good noise. Part of that is I put a vented hood on it so that has to attribute to some of it. Are aggressive cams and supporting mods just noiser by default? Thanks to all that got on here and answered questions and helped me out. Glad to have the car up and going! It sounds insane!

09-03-2022, 02:31 PM	#21
5150WS6 Drives: 2011 Camaro SS Join Date: Apr 2013 Location: Oregon Posts: 38	Well it's going for sure. Runs great. However now I'm still getting the random misfire P0300 code as well as a P0010 code. That's with the best tune I've had so far. Steve redid the tune and turned off the code for both of these and the car went right back into not being able to start again. I'm stumped. Did a new MAF sensor thinking that was it but no dice. :(

12-28-2022, 05:56 AM	#22
crank383 Drives: 2014 Camaro SS L99 Join Date: Dec 2022 Location: Virginia Posts: 12	Try to set spark timing at 20 degrees from 0 to 2000 rpm

12-31-2022, 06:03 PM	#25
LS1Formulation Drives: '13 Camaro SS '98 Firebird Formula Join Date: Mar 2022 Location: Grand Rapids, Mi Posts: 76	Just wondering... When you did the kit, did you measure for pushrods and order them to spec?