Random false KR - Motor Mounts ?

[2007GPGTSC]

Hey folks been having an issue lately as it has been extremely cold these last few weeks. be getting substantial KR when I just start driving in the morning. after about 20-25 minutes of driving its gone. I have discussed with scottydogs about it and he thinks it could be a knock sensor issue or motor mounts. I will post a video link below where the car is at operating temp and still getting 2°-5° when crawling at speeds of 15-20mph. I have seen spikes up to 15°-20° if temps get near 0°F. Also if I brake torque the car KR spikes as well now this would point to the motor mounts or maybe a combination of MM's and knock sensors. I will follow up with another video tomorrow when the car is not at temp.

Also the other day I made a thread about the car randomly getting lazy I believe this to be the culprit as I didn't have my scan gauge hooked up and couldn't read KR - car obviously acts up when its getting 10°-20° of KR

Also the car is not showing any DTC's

Thanks

BTW car is :

2007 GP GT s/c
HAI
PLOG
AL605's

http://www.youtube.com/watch?v=mSpFZnxuRoA

[blueguy]

Did you check the motor mounts?

Or are you just kinda guessing?

It's even harder for us to figure it out without any details from your end.

I would flip the stock dogbone mounts for one, and check the lowers...then, check for sway bar and downpipe contact...and report back.

[REDCRAPGP]

Bet he hasn't even though I mentioned to checked the motor mounts and sway bar awhile ago.

[2007GPGTSC]

Did you check the motor mounts?

Or are you just kinda guessing?

It's even harder for us to figure it out without any details from your end.

I would flip the stock dogbone mounts for one, and check the lowers...then, check for sway bar and downpipe contact...and report back.

I have already flipped the front db mounts. made little to no difference in the KR @ hand

[2007GPGTSC]

Bet he hasn't even though I mentioned to checked the motor mounts and sway bar awhile ago.

I checked the trans and motor mounts a few nights both are in decent shape no leaking fluid ect.

And I never recall you saying anything but to flip the sway bar. You may have said something about the motor mounts not sure

[REDCRAPGP]

Have someone start the car for you while you take a look at the mounts.. Makes sure the engine isn't moving back and forth to be 100% sure they aren't a issue.

[2007GPGTSC]

I spoke with a few other members aswell all seem to point to the cat being clogged causing false KR. anytime after a WOT pull I get a woooft of rotten fart. I will be putting the 3in DP in hopefully this weekend... weather permitting of course

[2007GPGTSC]

Have someone start the car for you while you take a look at the mounts.. Makes sure the engine isn't moving back and forth to be 100% sure they aren't a issue.

Looking at the motor rock when starting car vs putting in P,R,D ect. the motor only moves 1-1.5 inches maybe a bit more maybe less but I also didn't bust out my tape measure or ruler.... there is no significant rocking when doing so