6.0 swap need help [Archive] - FSC

beefy1314

01-01-2008, 07:44 PM

:repost: :dunno: does anyone know if an 03 6.0l will even run without the front o2 sensors installed. i have a 03 base truck that had a 4.3l i am putting a 6.0 in (pics to come) but i cant get it to run, i do not have the exhaust installed yet so the o2 sensors are not there yet. has anyone else ran into this

demonstalker

01-01-2008, 08:42 PM

Yea, it will still run. It won't go into closed loop though. Do you have fuel? Injector pulse? Spark? Any codes?

SilveradoLQ9

01-01-2008, 08:44 PM

never had a problem with that, they will run without them, just rough as hell. What is it doing?

Pauly

01-01-2008, 09:20 PM

Did you install teh 6.0 tune in teh CPM?

peace
PAuly

beefy1314

01-02-2008, 06:39 PM

[QUOTE=demonstalker]Yea, it will still run. It won't go into closed loop though. Do you have fuel? Injector pulse? Spark? Any codes?[/QUOTEi am getting good fuel pressure and spark the injectors i think are the problem

beefy1314

01-02-2008, 06:41 PM

Did you install teh 6.0 tune in teh CPM?

peace
PAuly
i have installed all new computer components

beefy1314

01-02-2008, 06:42 PM

never had a problem with that, they will run without them, just rough as hell. What is it doing?
it will fire for about a second then nothing i think i have it nailed down to the injectors thanks

04SilveradoMykk

01-02-2008, 08:36 PM

:nopics:

How much has this swap cost you so far?

airdeano

01-03-2008, 12:15 AM

howd you wire this into your 4.3L truck?
PCM wiring is severly different between both platforms.
not to mention 2 extra injectors.

airdeano

Pauly

01-03-2008, 06:01 AM

If it fires for a few ds then dies, I wonder if you need to do a security relearn.
The VATS is shutting the injectors down because the PCM thinks U are stealing the truck.
peace
Pauly

beefy1314

01-03-2008, 08:41 PM

:nopics:

How much has this swap cost you so far?
im about 4k deep right now but i am going put twin turbos on it so after getting it running for next season i will be about in it for 5k and then about anouther 5k in the turbos next winter.:whatever:

gracing

01-04-2008, 05:10 PM

Like PAULY said, you have to have the VATS turned off or it will never start. VATS= vehicle anti theft system. If you are using the factory 6.0 computer then you will need to send it off to have the vats turned off and have it tuned while you are at it. Or, you can have someone with a tech2 reprogram the computer to match the cluster.