• The site migration is complete! Hopefully everything transferred properly from the multiple decades old software we were using before. If you notice any issues please let me know, thanks! Also, I'm still working on things like chatbox, etc so hopefully those will be working in the next week or two.

GXP, Lots of codes, Please help

gagt3100

gagt3100

New member
p0036, p0030, p0135, p0443. These are the codes I got. When i clear them they come back almost immediately. The CEL won't go on, it will if I do 2+ starts without clearing the codes. My car started to cut power, but it went away, still got the codes though. Engine is running fine, no misfires/knock.

My car: 2005 grand prix gxp 150* nitrous, Catless DP, TEP trans, Custom tuning through DiablewTune.

I installed different maps, still the same codes. I did some research on the codes but could not find anything productive
 


Maps have nothing to do with it. Lew needs to turn off your rear 02 and you need to check your main 02 sensor verify the harness is plugged in tight same with the evap sensor
 
Rear 02 should be off , I have ran a catless DP for more than a year, ill 2x check. Also my trans is leaking a little oil and its getting under the car
 
Got another code P0722, speed sensor. Is that the one located on the outside of the trans by the diff? My spedo jumps around and it stays at 0 until I hit 40 then its pretty consistant but still flucutates about 10 mph
 
Been doing a ton of research and still cant come up with a conclusive answer with this one, anyone else have ideas?
 


Now that I think about it you got your trans rebuilt and had a gear change right? If that change wasn't accounted for in the tune that could be your issue
 
Fuse was blown again, put a new one in and no more codes but one. P0300 Random missfire car runs like crap sputters and does not sound right. I think it is dumping too much fuel into the car. My Fuel pressure is a few pounds lower, MPG down 3 to 10MPG, and AFR is 13.4~ when it is usually 14.7. Any thoughts?
 
So if your o2 harness got smashed did you check your real coil pack connector as well there all in the same area.
 


You must log in or register to reply here.
Back
Top