2000 Nubira DIS

[RSZT4]

Does anyone have specs on the 2000 Nubira's DIS Setup? PDF's stuff like that.

[MMamdouh]

what kind of specs you are seeking?

MMamdouh

[RSZT4]

Anything that you have would be awsome......i just want to varify that the Nubira DIS system will work with the GM 2.2L OHV ECM.

[PrecisionBoost]

The Nubira uses a positive 5V positive trigger as opposed to the usual 12V negative trigger.

The driver is inside the coil pack and you can't separate them.

Normally the line from the ECU is 0V and when the Nubira ECU wants to fire the coil it sends the coil pack a 5V signal.

In most vehicles the coil pack is connected to +12V and when the ECU wants to fire the coil it grounds the coil ( so +12V going down to 0V )

This is because the driver transistor is inside the ECU, where as in the Nubira it's in the coil pack.

Which 2.2L OHV engine management are you planning to use? ( which engine is it for )

You may have to use the coil pack from that system if it's not a positive trigger style.

[RSZT4]

The Nubira uses a positive 5V positive trigger as opposed to the usual 12V negative trigger.

The driver is inside the coil pack and you can't separate them.

Normally the line from the ECU is 0V and when the Nubira ECU wants to fire the coil it sends the coil pack a 5V signal.

In most vehicles the coil pack is connected to +12V and when the ECU wants to fire the coil it grounds the coil ( so +12V going down to 0V )

This is because the driver transistor is inside the ECU, where as in the Nubira it's in the coil pack.

Which 2.2L OHV engine management are you planning to use? ( which engine is it for )

You may have to use the coil pack from that system if it's not a positive trigger style.

hmm....ok thanks..... I will have to run the 2,2L ICM and Coil packs then and id also need to use a 660 trigger wheel., Else id have to use a few transistors to trigger the Nubira coils.

[PrecisionBoost]

I built a driver box for a few people so that they could use the Nubira ECU and trigger aftermarket coils/MSD ignition system.

Basically it's just an inverter..... so in your case it's the opposite... you need to take the +12V and invert it to 0V

Then when it hits ground to trigger it would need to be inverted to +5V

Personally.... if you have the usual +12V drop to ground style.... just go buy some MSD coils for a Neon

They are less expensive than a factory ignition and work decently.

I'm sure you could sell the used Nubira coil pack for close to the cost of a brand new set of Neon coil packs.

I think I ended up paying about $65 for a brand new coil pack... which was wholesale price... but I'm sure that you could get one for less than $80


As for the Nubira reluctor wheel.... stock should be a 60-2..... I thought that was a very common type.

When you say 660 are you saying 60 teeth with 6 missing?

I suppose one other issue is the location of the missing teeth..... I don't know where it is located on the 2.2L OHV but it might be different than on the 2.0L DOHC.

I can't remember off hand.... but I was thinking the notches were located at TDC on cylinder 1/4

[RSZT4]

On the 660, the extra notch is....
10* after #4 TDC IIRC, but I'll be checking that again soon
the GM I4s used the very same trigger wheel "7x" or "6+1"

[RSZT4]

I built a driver box for a few people so that they could use the Nubira ECU and trigger aftermarket coils/MSD ignition system.

Personally.... if you have the usual +12V drop to ground style.... just go buy some MSD coils for a Neon

They are less expensive than a factory ignition and work decently.

I'm sure you could sell the used Nubira coil pack for close to the cost of a brand new set of Neon coil packs.

I think I ended up paying about $65 for a brand new coil pack... which was wholesale price... but I'm sure that you could get one for less than $80

The coil drivers for the Neon are in the ECM, as they are the same for the Nubira. But the 2.2L has the coil drivers in the ICM. So the Neon coils will not work with the 2.2L ECM or the '7749.

[PrecisionBoost]

The coil drivers for the Neon are in the ECM, as they are the same for the Nubira. But the 2.2L has the coil drivers in the ICM. So the Neon coils will not work with the 2.2L ECM or the '7749.

Coil driver transistors for Nubira are not in the ECM.... they are inside the coil pack.

Does the ICM run completely independantly and advance/retard timing.... or is it a situation like in the Mitsubishi where the ICM is really just a driver pack?

With the Mitsu the ECU sends a +5V trigger to the ICM and then the ignition module simply fires the coil packs ( which are compatible with the Neon coil packs )

That is to say the ICM is not advancing or retarding the ignition.... the ECM still controls that.

One could use the Nubira ECU, attach it to a Mitsu Ignition module and Mitsu coils and it would be happy.

I don't know that much about the other GM systems..... so I can't really comment too much on how to make things work decently.

[RSZT4]

The coil drivers for the Neon are in the ECM, as they are the same for the Nubira. But the 2.2L has the coil drivers in the ICM. So the Neon coils will not work with the 2.2L ECM or the '7749.

Coil driver transistors for Nubira are not in the ECM.... they are inside the coil pack.

Does the ICM run completely independantly and advance/retard timing.... or is it a situation like in the Mitsubishi where the ICM is really just a driver pack?

With the Mitsu the ECU sends a +5V trigger to the ICM and then the ignition module simply fires the coil packs ( which are compatible with the Neon coil packs )

That is to say the ICM is not advancing or retarding the ignition.... the ECM still controls that.

One could use the Nubira ECU, attach it to a Mitsu Ignition module and Mitsu coils and it would be happy.

I don't know that much about the other GM systems..... so I can't really comment too much on how to make things work decently.

ICM is just a driver pack.

Now, that is fine and all if you want to keep things stock. But If you want to boost and have capabilities of boosting the Nubria ECU wont work that well. there is nothing in its tables for Boost. Where as the '7749 already has it and combined with $59 it is more capable than any piggyback / MS system out there.

So right at the moment here are my thoughts : Sunbird wiring harness from the 2.0l OHC, modified to work with the 1994 Cavalier2.2L OHV ICM / coil pack on the Nubira engine with the 7749 ECM.

EDIT : should add in for other ppl reading this, the Nubira engine will be converted to OBD1.