more bad news

I am still working through my bank 2 lean code. I had my computer reprogrammed and now the code still comes on and I can still smell gas as I drive but at least my exhaust is not burning up my floorboards.

I have had current performance program the computer twice now and am getting tired of pulling my computer and sending it to florida. http://www.ls1tech.com/forums/images...r_banghead.gif

I finally found a place that will do dyno tunes in my area. I am thinking I should just pony up the dough and get it tuned for my conditions with someone in person to make this thing run right. My 6.0L is running so poorly that I am getting 8.3 miles to the gallon and sounds more like a lawn mower. I was driving like a granny too. http://www.ls1tech.com/forums/images...ech/gr_sad.gif

My fuel pressure is at 55 psi as I mentioned before and I am going through some tests to figure out the best way to fix that.

With the conditions that I have described am I thinking right about getting a retune in person?

I just want this thing to run right before things get too cold! Besides we are having a baby at the end of Oct which will make working on this truck thta much more tricky!

Buy two new O2 sensors and install them first. Buy the ones that go behind the cat in a C5 Corvette, two of them. I run them in my headers and my fuel mileage went back to about 15mpg and they switch properly.

Cool I'll look into that.

BY way of a weird update I rechecked my fuel pressure and it is more like 56.5 psi and does not jump higher when I connect it right to my battery. The weird thing is that when I pulled the fuel pressure dial of the motor and put the plug back in the fuel rail and drove the truck home the check engine light went off and I am smelling less gas. I'll be monitoring it further but maybe this plug was not in tight before and I was losing fuel before it even got to the engine, which could explain the lean code and extreeme fuel consumption as well as the gas smell.

Lets ses if I get lucky. Anyone think my theory might be right or might I be missing something?

Besides we are having a baby at the end of Oct which will make working on this truck thta much more tricky![/quote]

Thats a fact. Especially if your shop is in your basement.:cry:

Hey, how do you quote only part of a post the right way?

Quote:

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Originally Posted by RedHeartbeat

Buy two new O2 sensors and install them first. Buy the ones that go behind the cat in a C5 Corvette, two of them. I run them in my headers and my fuel mileage went back to about 15mpg and they switch properly.

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I noticed when looking at the 2002 year sensors that the plugs do not match my plugs and the wire colors are different. Is there a year that you recommend or instructions regarding matching up the wires from my current o2 sensors?

Thanks

What harness do you have, a NelsonPerformance harness?

the harness was built by Current performance and was supposed to use all the 2004 oem connectors. I am not sure if this is right though as other mistakes were made. In any case my front o2 sensors, as I don't have any in the rear, use two white wires and one blue and one green if my memory serves me correctly. The connector is shaped like this \__/ rather than just being square [_].

By the way the lean code has returned. I did swap the sensors to the opposite sides just for kicks even though I was told they were both working. We'll see if anything changes. I am not hopeful.

update:


There is a nipple on the top of my truck intake near the throttle body with an electrical plug and what looks like something similar to a bike tire nozzle. I am assuming this "unit" went to the emissions stuff like the evap canister. Is it possible that I could be getting a vacuum leak or otherwise getting air though this thingy? I was thinking about putting a vacuum cap over the nipple that is just exposed.

Thanks

I capped the above mentioned nipple and swapping the o2 sensors did not change anything the same code came back.

I resprayed the intake with carb cleaner with no change in rpm. I am at a loss here.

what code are you getting?