Wakethis2006

PLEASE HELP!!!!
so I did a 5.3 swap with a 4l60e into a 98 jimmy. ive gotten everything together built my stand alone harness(not my first) and got it all wired up and got the computer reflashed and removed everything I needed to for the harness. so I go to start it and it starts warms up and then starts idling high like 900 to 1100 rpms. I let it run for a little bit to see if itll idle down and then at about 170 degrees it craps out and kills it self and is hard to start and running very rich. I put new 02 sensors. what should the voltage be coming out of the 02 plugs? mine are showing 8.5 volts. then I let it sit over night and went out and started it and it idled at 300 to 400 rpms and was fine but when it hit about 170 it died again. I then went in ate dinner came back out started it and it was back to high idle. I need to get this thing running asap so if any help would be appreciated.

Wakethis2006

also when I go and unplug my 02s after its been running awhile it doesn't change anything with how the motors running

SS90K5

DBW or Cable?

Wakethis2006

drive by cable

LSX Power Tuning

iTrader: (4)

Can you post the tune and a data log? Without something to look at itd going to be very hard to say what it is over the internet.

gagliano7

Check for vacuum leaks.

Wakethis2006

so got my obd2 port working and it ended up having codes. here are the codes in the order it gave me

p0452
p0405
p0443
p0449
p0118
p0650
p0405
p0443
p0449
p0452

bigfatls6

iTrader: (34)

I did a tune on a 5.3 4l60e swapped s100 blazer the other day. It had a ls1 intake on it. It also high idled due to the vac line on the rear of the intake for the a/c was left open and also had a huge hole drilled in the throttle body. We swapped the tb blade and pluged the vac on the back of the intake and fixed it right up.