Alright fellow forum goers have a little problem i am hopping i can get some help with. I have been working on the problem the past couple of days so i will first give you the back story to fill you in on how i got to were i am now.
Bought the UCON EMS system recently and finished installing it a couple of days ago. After i finished installing everything that came with kit i went to fire it up. Everything seemed fine, I let is run for a little bit, then when i was about to leave for my test drive truck was stalling out when put in reverse or drive. Of course the CEL was on so i pulled the codes...p0051, p0300, p0301, p0305.
I kind of focused more on the misfires at first so i checked some of the ignition system...coils, spark plugs(just put in all new). I even took everything apart again and checked the timing, thought maybe i fudged it up, but it was good. Didn't get to testing the injectors.
Then i started looking into the p0051 code and found that it could have been the A/F heater relay or possibly the forward 02 sensor (A/F sensor). Checked the relay and it was good. As for the forward o2 sensor i just went ahead and replaced the darn thing....which leads to were i am stuck now.
After installing the new o2 sensor I went to start the truck and it start the first time. I also noticed the all the misfire codes i pulled were gone but the P0051 code still remained. I went to check if i could change gears......it stalled. I went to start it up again and now it just keeps turning over. If i turn it over for about 5-8 seconds it will start but now it idles high and still cuts out if i put it into any gear.
ALSO... there might have been 2 gallons of unleaded put in the gas tank. Dont ask how just one word....Wife.