Darknight-4

iTrader: (6)

I put a cam in an lq9 with 80k I bought and dropped it in place of my 5.3 1999 GMC sierra 1500 rcsb.

New stuff: lifters, trays, pushrods, springs, sparkplugs, plug wires, ls6 valley cover, katech rod bolts, katech oil pump, WCCH stage 2 ported heads with .030" milled, new crank sensor, cam sensor, and coolant temp sensor.

Used or already had: pacesetter 1 3/4" headers, full 3" single exhaust, ported cable throttle body, stock intake manifold with marine injectors, ebay CAI, 34" radiator, 05 efans, 10k mile stock water pump, underdrive pulley, 3600 Yank stall, Vacuum modulated built 4l60e, 40k Tru cool, 145 amp alternator, big 3 mod, and 4.10 gears with girdle.

Truck doesn't want to run at all unless I give it a lot of pedal, then it runs like crap for a bit and dies. Then I got the SES light with P0106 code.

Also not seeing any readings on the tach or fuel gauge for some reason, it has never done this before. The Oil pressure, volt gauge, and coolant temp seem to be working. Not sure on Speedo or trans temp for obvious reason.

?I'm not sure if it matters, but would using rtv to hold the map sensor to the intake make any of this happen? Mind u none of it is on the bottom where the reading is, just where unit meets intake.

Anything other than swapping out the map pops into anyones head?

Darknight-4

iTrader: (6)

changed MAP sensor with another sensor and no change.

BUT I did find something interesting about the gauge cluster, my IGN0 fuse is blowing causing this problem. And part of what that is VCM/PCM according to manual.

So I'm gonna try disconnecting a few extra grounds that I have from Efan harness and Big 3, tomorrow to see what would be causing this to blow.

In case this issue and the running like crap are unrelated, any help would be appreciated.

Thanks.

BlackGMC

iTrader: (31)

have you retuned it?

Darknight-4

iTrader: (6)

Yes flashed with tune before cranking.

Darknight-4

iTrader: (6)

Still no luck with the fuse blowing issue. removed big 3 and Efan harness, along with unplugging almost every piece of the harness from the engine. But still blows fuse. I do think that once I find this, the motor will run fine...its just finding it.

Couple of other things I'm going to try and check are PCM connections (installed part of Efan harness to Pin 42), starter, and crank position sensor plug.

If it isn't any of those I don't have any idea about what else it could be, because I didn't mess with anything else.

It blows the fuse when I move the ignition to the start position (when it primes the fuel pump), not when i go to crank the motor.

I've also tried a different tune and it made no difference, just wanted to be sure.

I also pulled every fuse on the truck to make sure nothing else was blown and it was all fine other than IGN0 fuse (PRN321 Display, odometer, VCM/PCM).

BLAH...So annoyingly fed up with this crap.

06murder

sounds like tune way off.have you cheacked fuel pressure, changed fuel filter?

Darknight-4

iTrader: (6)

No neither, the fuse blows before I even attempt to start the truck. And I think that is part or all the reason why it was running bad.

Darknight-4

iTrader: (6)

Ok, so I found 2 wire schematics with fuse IGN0 labeled, can you please help me understand them and hunt down the possible solutions with these?

Accidentally bumped the other thread instead of this one before


Here are schematics of IGN0:

SnakeOiler

iTrader: (6)

Have you verified all the ground hookups are good? It seems that a ground is always missed when someone does a swap.

Darknight-4

iTrader: (6)

Got it all running fine.

It was a plug in the transmission.