o2 problem (EFI Connection conversion)

[prorac1]

Yeah, I think some sand got all up it there, lol. Eric L

[1BADAIR]

SSR, envoy/trail, Rainier had alum 5.3's in 03-04
ext cab trucks got them in 05-07 as an option

[JoeliusZ28]

lol

if you wanna be technical, that 5.3 block is actually a 325

[1BADAIR]

if you wanna be technical, that 5.3 block is actually a 325

.1
every little bit helps

[Phantom409]

Have 1 harness done and it ohmed out at .2.
Now for the 2nd one if my kids don't destroy my house 1st

[92conv]

Hey bud, I'm holding off on your request. I think things have calmed down!?!??!

[Phantom409]

K, I still had my original Passenger o2 harness that I made and ran on the dyno so I ohmed it out and this is what I got:

12v Power wire Pink: .2 ohm
Hi Res Purple: .3 ohm
Low res Tan: .5 ohm
Ground Black: .5 ohm

I believe we have the problem Houston!

[ThreeHonks]

K, I still had my original Passenger o2 harness that I made and ran on the dyno so I ohmed it out and this is what I got:

12v Power wire Pink: .2 ohm
Hi Res Purple: .3 ohm
Low res Tan: .5 ohm
Ground Black: .5 ohm

I believe we have the problem Houston!

isnt that exactly joel told you?

[prorac1]

I told him to, lol. It just took a little while to pound it into his head, lol. Eric L

[Phantom409]

I told him to, lol. It just took a little while to pound it into his head, lol. Eric L

Once you found out what I did you told me that it was a bad deal.

Joel was worried that I had a crossed wire or over lashed valves but I think he might have mentioned that also.
I just got that off the car today.

[prorac1]

So, are they installed yet? Plug em in and lets see the results. Eric L

[ThreeHonks]

yeah did it fix it? still doesnt explain the low dyno number though :/

[Phantom409]

yeah did it fix it? still doesnt explain the low dyno number though :/

The dyno #'s are most likely from weak valve springs and that will not be done till later.
o2 harness will go back in I hope tomorrow.
I have to go and start building a swing set now

[1BADAIR]

what springs are in it?
how much lift?

[JoeliusZ28]

what evidence is there that the springs are weak?

Even if the springs are weak, and i see no reason to believe they are, he has his valve lash set to 3/4 turn past zero. To my knowledge that is within spec but on my car that was NOT an optimal adjustment. As i recall it was starting to pressurize the valve stem if I went beyond 3/4 turn at all. Even if springs are a suspicion try loosening up the valve lash first, it cant hurt. Some people run as little as 1/8 turn with no problems.

I believe mine are set to 1/3 turn past zero lash.