Replacement ECU For '99 2.4L N/T

[DogWhistle]

Even with the thread research we've done, because there are so many combinations of DSMs, engines, years, transmissions, turbos, etc., information on electrical systems is scant and often confusing.

We just picked up a second DSM, a '99 Eclipse Spyder GS, 2.4L N/T with a 4G64. We are having trouble with the charging system and are confident in the alternator, battery and wiring.

Some of the research tells us that on this N/T model, the charge/no-charge signal is controlled by the ecu, which can sometimes go bad.

I've contacted all the usual rebuilders of ecus (including ones on this site), only to be told they don't repair the N/T model ecus.

Because of the age of the car, these ecus are much more scarce than you would believe.

Here's the question: can we use another model ecu, say a turbo model, and make an alternator change to handle the charging function?

 

[dsm-man]

Have you tried checking with miller. The guy parts countless dsm's id try him to see if he has one before you go ecu swapping and rewiring.

 

[DogWhistle]

The only Miller member is in HI. Other than that there are several Millers with numbers following their names. If you know the one you're thinking of, please PM us.

Thanks!

 

[Joethefallen23]

Miller import parts. His name is Steve and his forum name is Stangmurdera. Give him a call. He has virtually every part you can think of.

 

[crimsondragon]

Plug these numbers into ebay and see what comes up. The p/n's are plastered on the front of the ECU so any seller would be retarded not to post it up in the ad.

MD359405, MD345713 - w/o Cali Emissions

MD339763, MD359404 - w/ Cali Emissions

These are the 95-97. Don't know if there's any difference really.
MD325939, MD326327

 

[DogWhistle]

Thanks for the feedback everyone. We're on it. Will follow up with results in a few days.

 

[1qkfwd]

I just happen to have a 2.4 n/a ecu. I can get the part number tomorrow when I get to my shop. If you want shoot me a text 775-848-5934 as a reminder. I have no use for it and acquired it in a shop clean out.

 

[luv2rallye]

Some of the research tells us that on this N/T model, the charge/no-charge signal is controlled by the ecu, which can sometimes go bad.

The ECU controls the alt on the 2g 2.0 NT (because it's a Chrysler engine/ECU).

BUT ON YOUR 2g 2.4L NT (it's Mitsubishi) and the alt has it's own regulator inside itself like the turbo models do (and most other non Chrysler cars). Since the ECU does not control the alt on yours, the alt itself is most likely the problem. The Mitsu ASA database shows the 2.0L turbo alt from 9/1998-4/1999 (factory #MD354787) is the same alt they put on your '99 2.4L NT GS Spider. So getting an alt from an auto store for your make/model/year should work fine. I STRONGLY suggest you DON'T get an alt from any auto store however (especially Autozone and Oreillys) as they are all rebuilt junk. Don't let their free lifetime replacement warranty sway you. When they are junk it doesn't matter that they will exchange it free over and over and over and over (just search these forums about their quality and you'll see). Get one exchanged (for new or rebuilt) or have yours fixed at an alt/starter repair shop.

 

[1qkfwd]

The one I have is MD326327 so 96-97 2.4L. Not sure if it'll work but its here.

 

[DogWhistle]

Wow! Great help everybody. Along with Miller, we've got enough info to lift the mystery and sort this issue out. We'll go ahead and mark it resolved because you've covered all the bases. Thanks everyone!