Just installed an LS2 402 and it runs rough.
Originally Posted by DrkPhx
If the wired are crossed, it will cause a backfire and pop condition similar to mismatched plug wires on a SBC.
Also, not related to tuning and off topic but about the oil leak. I am new to the whole manual trans world so this is going to sound stupid but here goes.
When the tranny is in nuetral, does the clutch disk spin and have friction with the flywheel? I am concerned as to whether I am soaking the clutch with oil if my oil leak is coming from the oil plug in the back of the crank. Also, the tranny is very low on fluid as I have not refilled it yet due to the possibility that I will have to pull the tranny back out if the oil is coming from that oil plug in the crank.
Originally Posted by hpcubed
It should run fine without the cam sensor. That only assists for quicker startups.
If you are running the maf, the computer knows how much air is coming in. Doesn't matter if its a 402, timing calculations will be off a little. Bottom line is if you open the throttle stop a little, it should idle at 1K pretty decent.
If you are running the maf, the computer knows how much air is coming in. Doesn't matter if its a 402, timing calculations will be off a little. Bottom line is if you open the throttle stop a little, it should idle at 1K pretty decent.
Staging Lane
Joined: Aug 2004
Posts: 82
Likes: 0
Originally Posted by 98Z28CobraKiller
When the tranny is in nuetral, does the clutch disk spin and have friction with the flywheel?
Thanks for all of the help guys. I got the wire switched around and now I can idle. Cam code is gone. I have taken her around the block a couple of times and it seems to run ok. The oil leaking seems to have worked itself out for now. I have a buyddy with a lift that is going to help me figure out the oil leak if it shows up again. I just hope that it isn't that plug in the back of the crank.
I hope to be getting the HPTuner software on the 16th or 17th if they ship on the 15th as promised. I will be giving it my best shot at an SD tune.
Question, I am getting a misfire code now but there is no misfire when I check for a misfire. What could this be? Also, aren't the rear O2's missing supposed to set a code? I am not getting a code for the missing O2's. Other than that, everything is great for still having a stock tune.
I hope to be getting the HPTuner software on the 16th or 17th if they ship on the 15th as promised. I will be giving it my best shot at an SD tune.
Question, I am getting a misfire code now but there is no misfire when I check for a misfire. What could this be? Also, aren't the rear O2's missing supposed to set a code? I am not getting a code for the missing O2's. Other than that, everything is great for still having a stock tune.
Originally Posted by 98Z28CobraKiller
Thanks for all of the help guys. I got the wire switched around and now I can idle. Cam code is gone. I have taken her around the block a couple of times and it seems to run ok. The oil leaking seems to have worked itself out for now. I have a buyddy with a lift that is going to help me figure out the oil leak if it shows up again. I just hope that it isn't that plug in the back of the crank.
I hope to be getting the HPTuner software on the 16th or 17th if they ship on the 15th as promised. I will be giving it my best shot at an SD tune.
Question, I am getting a misfire code now but there is no misfire when I check for a misfire. What could this be? Also, aren't the rear O2's missing supposed to set a code? I am not getting a code for the missing O2's. Other than that, everything is great for still having a stock tune.
I hope to be getting the HPTuner software on the 16th or 17th if they ship on the 15th as promised. I will be giving it my best shot at an SD tune.
Question, I am getting a misfire code now but there is no misfire when I check for a misfire. What could this be? Also, aren't the rear O2's missing supposed to set a code? I am not getting a code for the missing O2's. Other than that, everything is great for still having a stock tune.
Originally Posted by DrkPhx
Glad to hear to hear that. The rear O2 code will eventually come on after a couple of drive cycles. Did you check for individual cylinder misfires with Autotap? Curious why you're going the SD route; I'm running a MAF and with more tweaking my tune should be good. Also, what are you running for a system.
Regarding SD. From all that I have read, you can get more power out and fine tune it better (in my climate). I live in South Florida so my altitude never changes (sealevel +/- 5 ft). My temp goes from 45 to 95 F. Humidity goes from 100% to 80%. But most of the year it is between 70 and 80 F. I have heard that you can really get one of these 402's tp pur.
Just tried to start my LS2 last night and have very similar issues. I get only a P0343 code. I also got the LS1 -LS2 cam harness from SDPC. I called them today to see if they can verify. I traced some wires and found the following: Hope it helps.
LS1 is
The extension looks straight through
PIN A = brwn
PIN B = pnk
PIN C = red
The problem is that on the front cover where the cam sensor is is wired. (pin "A" and "C" are reversed).
PIN A = red
PIN B = pnk
PIN C = brwn
LS1 is
The extension looks straight through
PIN A = brwn
PIN B = pnk
PIN C = red
The problem is that on the front cover where the cam sensor is is wired. (pin "A" and "C" are reversed).
PIN A = red
PIN B = pnk
PIN C = brwn
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TECH Addict
Joined: Dec 2001
Posts: 2,907
Likes: 1
From: Bergen County, NJ
Thanks for all of the help guys. I got the wire switched around and now I can idle. Cam code is gone. I have taken her around the block a couple of times and it seems to run ok. The oil leaking seems to have worked itself out for now. I have a buyddy with a lift that is going to help me figure out the oil leak if it shows up again. I just hope that it isn't that plug in the back of the crank.
I hope to be getting the HPTuner software on the 16th or 17th if they ship on the 15th as promised. I will be giving it my best shot at an SD tune.
Question, I am getting a misfire code now but there is no misfire when I check for a misfire. What could this be? Also, aren't the rear O2's missing supposed to set a code? I am not getting a code for the missing O2's. Other than that, everything is great for still having a stock tune.
I hope to be getting the HPTuner software on the 16th or 17th if they ship on the 15th as promised. I will be giving it my best shot at an SD tune.
Question, I am getting a misfire code now but there is no misfire when I check for a misfire. What could this be? Also, aren't the rear O2's missing supposed to set a code? I am not getting a code for the missing O2's. Other than that, everything is great for still having a stock tune.
Swap the pins For some reason when they send these out they leave a pin and c pin in same location . Pop the wires out and swap a and c and ur code will go away! I am suprized u even got it to start being that way .... it put it in a hard start condition aswell . Most guys get it to turn over and just pop but never start!
