Question : I need help! my hybrid is not starting.

[mickaz]

Hi I need some help

I got a obd2 beretta with a 3400/3500 hybrid that is not starting. The engine is turning and it seems to have fuel but it seems to have a problem with the fire. ive looked everywhere and reinstalled my sparkwires but the problem persist. the engine seems to be turning freely but it seems like the fire is not at the right time ( because sometime i have a spark when the intake valve is open.)

I am out of idea right now but if you have any idea I open to suggestions

I am looking for a wiring diagram for the engine and all the colors for the sensors, if somebody have that it would help my out big time.

oh and i forgot I got a 2 wire cts in the rear head and my harness plugs has 3 wire. what do I have to do to chang it? and my egr plug is not the same as the newer model egr plug. do I splice it with the new egr plug?

[robertisaar]

these should help...

[IsaacHayes]

EGR plugs different? That's news to me.

Your 3 wire means a ground, and 2 wires one for ECM one for dash gauge. You need another sensor somewhere or a 3 wire one. You could drill and tap the LIM like the stock 3100 had a 3 wire, but since it's together, I'd look for a place on the block and install a single wire 94-95 sensor and run the 94-95 style sensor ends. One 2 wire ground and signal for ECM, one single wire for dash gauge....

Are your sparkplug wires in the right order? Not getting confused by going with the intake manifold # writing?? Even cyl are by radiator, odd by firewall.

[mickaz]

not going by the wiring on the cylinder? you mean what is written on the lower maifold is not the correct firing order?

[IsaacHayes]

LOL ok yeah you got it backwards. It's easy to get confused by looking at the LIM for cylinder # order.

Standing in front of the car this is the correct location of the clys:
Firewall
1 3 5
2 4 6
Bumper

Compare to what the lower intake says for the top of each runner:
2 4 6
1 3 5

It's not wrong, but simply shows where each port goes to what cyl. But if you look at it and assume the cylinder is right under where the # is on the manifold, you will be wrong. But follow the runner down from the # and you will end up on the opposite side of the motor from where the # is stamped on the manifold, but be at the right cylinder # that they stamped on the top of the port.

[robertisaar]

True dat, isaac...

that screwed with me for the longest time.... so i just ground the numbers off of my spare LIM: problem solved. now i just remember that the #1 cylinder is right next to the alt...

[mickaz]

thanks I got it to start but now I got another problem. the car seems to have sluggish performance it feels like a 3100.

theeverything is hooked up, except the egr and the coolant temps sensor are left henging in the bay( until i make the modifications.)

what could make the engine feel so sluggish?

[IsaacHayes]

Do you have the Yellow/Black wires going to the CTS? If you don't have that going to the ECM, it's going to either think it's running a million degrees or 0 degrees. I think the later. So it is probably dumping a ton of fuel cause it thinks it's cold.

Hook up the CTS before driving it. The gauge one would be a good idea as well too so you don't over heat the engine....

Also, what injectors are you running, and do you have a tune for this?

[mickaz]

i am running the venture injectors and I have a tune my ecm is one from 97 venture with the 3500 VE table and spark table.

yeah the cts I have enough meat on the LIM to pierce it? what is the size of the tap needed?

[MidnightriderZ24]

u have to remember the #1 cylinder is always the side with the head closest to the timing chain. iirc its a 1/2'' npt for the cts.

[3400-95-Modified]

CTS not hooked up shows up as -40 degrees and will be pig rich.

You've half assed the motor into the bay and not hooked up all the necessary sensors to run... Need anymore explanation on why the motor is sluggish? Finish the job before you start comparing results.

u have to remember the #1 cylinder is always the side with the head closest to the timing chain. iirc its a 1/2'' npt for the cts.

or aka furthest forward cylinder... It's been like that forever... very easy to figure out by looking at the engine orientation.

[PCGUY112887]

Since you have OBD2 now you are surely setting off some codes if you don't have things hooked up properly. If you don't have a code scanner drive it to Autozone or someplace where they do free scans and write down what codes it's throwing and use that list to address your issues.

You probably also need a CASE learn which needs to be done with a scanner. It's a process where the PCM needs to learn where exactly your crank is since it has no clue since things have been swapped. It knows when something is wrong. Your PCM will throw a code if it wants a CASE learn, and it probably does.

[3400-95-Modified]

Case learn is not available on a 96 Beretta.

Get the ECT fixed and it will run better.

[PCGUY112887]

Case learn is not available on a 96 Beretta.

Get the ECT fixed and it will run better.

He has a 97 PCM however so he will have CASE learn.

[mickaz]

I had to move the car out of the garage so I had not choice but to half-ass it. the garage is 50 km from my home so i drove it and it felt sluggish. i,m hooking it up this weekend. i was just suprised that the cts could make so much trouble. by the way 3400-95-modified, what did you do with your egr? I had an egr for my 3500 top end but the connector is not the same.