2.4l to 3400 sawp
 

just swaped 2.4 to a 3400. car won't start. buddy said we have no fuel. we can get it to run with either. i also don't have a starter signal. swaped gauges all engine wiring, engine fuse box, exhaust, pcm. can anyone help me out???

is the security light on?

yes it is. i tried that security over ride but still nothing.

you didn't put the BCM in did you

no i just did the wiring for the engine compartment and fuse box and pcu

need the BCM, VINs have to match. also:

it doesn't crank over. you gotta jump it.

That's because the starter is controlled by the BCM on the 3400.. Not on the 4-cylinders.

In a 3400 Alero, you don't even have to hold the key when it's cranking. (at least 01-04, not sure on the older ones)

Swap out the dash harness and probably the BCM. You might be able to have the BCM reprogrammed, but not all of them can be.

side question./// wouldnt the original motor before the swap have more potential power and available aftermarket?

I was going to ask who told him to do such a swap but figured I'd just say something constructive instead.

x2....

i've blown two of those engines up and decidied to swap a 3400. some people may disagree with my decision but whatever it's my car and thats what i wanted to do.

also what about my fuel pump. does it run through the bcm aswell cuz the pump doesn't turn on and the gas gauge doesn't register. the gas light comes on and the needle doesn't move. buddy of mine jumped it to see if it works and it does.

All of the gauges are controlled via the Class 2 data bus, and intern by the BCM or PCM.

how are your grounds? the security re-learn was done properly? No codes, turn key on, crank for one sec, leave key on for 10 mins till the light goes out?

the only harness I swapped was under the hood. did you get the harness from the same year car?

I did not change my cluster, or BCM, just the PCM

no i have an 01 and engine tranny and harness from 02.

did you scan it yet?

would one of those obd2 scanners from part source work cuz i know the people that own it.

they might work, depends on how many codes the can scan, some of those scaners only read out P0000 codes.

I have a problem with my speedometer not working and and the rpms off. Also it will not shift without starting in 1st gear. My motor is a 3400 and the check engine light is on. if anybody can help me that would be great.

Is your engine harness for a car with PCM controlled start or not? (it appears to be a mid-year 02 change).