3500 swap questions

[3400-95-Modified]

Umm... DHP doesn't have that area to modify. I actually didn't think that sensor went to the ECM but I just looked at the diagram and it does...

Hrmmm I should ask Charles about that one.

I've done this more than once but make sure your MAIN power wire from the battery is connected to the starter. I had similar issues were certain lights were on and others werent, and the car wouldnt turn over, and the batt wire being disconnected was the reason why.

[PCGUY112887]

I really can't see any of the sensors killing the fuel pump... since otherwise if one went bad the car would always die.

I must be missing a large connector somewhere... there are 2 right by the alt, a fat square one and a trapazoid shaped one. Can anyone think of any others? What about any other grounds aside from the 2 groups of grounds on 2 tranny bolts?

Also 3400-95... what value did you change in your PCM to disable the low oil light that no pan sensor will give you? I plan working on a BIN file for this car tonight.

[3400-95-Modified]

Hooray for OBD I and checking everything out first.

jk. Im sure you got some simple problem

mines OBDII and my oil pan sensor plug is tucked up behind my trans bracket and my fuel pump works...

05 3400 pans don't have the oil level sensors either.

[wasas9]

last time that happened to me, i forgot to plug in the bulkhead connector that ran power from the battery to the rest of the car.. on my car it's on the drivers side in the cowl.. not sure about yours.

Hooray for OBD I and checking everything out first.

jk. Im sure you got some simple problem

[Superdave]

last time that happened to me, i forgot to plug in the bulkhead connector that ran power from the battery to the rest of the car.. on my car it's on the drivers side in the cowl.. not sure about yours.

[PCGUY112887]

Hummmm....

I think I know what wire he is talking about, there is a fat red wire coming out of the fuse box where the fuel pump fuse is (or is that the relay?)... however I never disconnected anything from it, the red wire is hard wired into the box and goes into a main wiring harness...

Only other idea I had is if the car saw no oil level, then it would not run the pump. This could happen since I have to leave the pan sensor unplugged, since there is no sensor there in the 3500. However that does not explain the interior lights... interior lights and fuel pump have to be linked. Radio does not turn on either, it's gotta be something big I am missing since it powers just about everything else in the car.

I thought maybe the battery went bad but the battery is reading about 11v after me screwing with turning it on/off over and over.

[bszopi]

Sounds similar to this: http://www.60degreev6.com/showthread.php?t=37487

Be patient and search, you've left something disconnected somewhere. Check all of your fuses. Get a multimeter and check for power to the fuel pump relay and to the computer.

[IsaacHayes]

Do you have any doors open? Do you have a hood light? If I have a door open after 15mins or so it shuts off all interior lights and you gotta close all doors/trunk before it will reset. I'd get more sensors plugged in too.

[PCGUY112887]

OK I dunno wtf I am forgetting...

I have plugged in just about everything, only things not plugged in is MAP, MAF, air temp, TPS, IAC, etc... things that should not matter at all.

However I can STILL not get even the overhead light to turn on. Trunk light won't turn on either. I turn the key to run the pump and all is quiet, but the dash lights up.

Is there some huge harness I am forgetting somewhere that I can't see? There is basically no power anywhere put the dash... even the glove box light won't turn on.

[Superdave]

it is located in a different location if you used that stock area... I noticed mine reads higher under certain conditions but that could also be a result of uncoated headers in my engine bay heating things up.

stock 3.1 gauge sensor is in the rear head as well.


i'll check the resistance of both sensors when i get a chance.

[PCGUY112887]

OK, I read that it's a good idea to turn the key to ON so the fuel pump runs and puts pressure on the fuel rail, so I can check for leaks before I put my upper intake back on. I have reconnected most of the main wiring harnesses, the 2 groups of grounds to the 2 tranny grounding bolts... the only wires left hanging (that I can spot) are for various sensors...

However when I open the door, no interior light. Then I turn the key to ON, the dash lights up but no fuel pump running. What am I forgetting?

Also with fuel rails, when you hook the 2 lines back up I just pressed them together very hard, till they finally clicked and locked together... is this the right way to do is or is there supposed to be some special way?

What else should I know before trying to start? The engine came with "no oil", but the pan was just empty the insides still had oil... I have put a bit of oil through it once back when I was trying to get a stuck piece of gasket out of the oil, and I also lubed the cam before putting it in... I also poured some oil down onto the cam before the LIM went on. Lifters were in a bag of oil for storage, just popped them back in. I did not cover the new push rods in oil, just put them in checking the order about 12 times. Should I pull the fuel rail fuse and disconnect the injector harness and crank for a few seconds to get oil to run through it?

EDIT - Sounds like the pump won't run if my oil pressure sensor is not plugged in... i'll give it a shot tomorrow. I would still like other advice for my other questions though :-)

[3400-95-Modified]

it is located in a different location if you used that stock area... I noticed mine reads higher under certain conditions but that could also be a result of uncoated headers in my engine bay heating things up.

[93ztwo4]

i think it might just be the gauge. i was reading my temp right from the ecu and it was right where it should be and it reads the same on my autometer water temp.

[SappySE107]

Just check resistance of both at the same temp? I should have both lying around.