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Discussion Starter #1
I've got an '88 Samurai at the shop now . Won't start. Engine turns but no sparks. Guy here says that wires from distributor are all going through a unit under the passenger-side dash labeled DENSO 077200-0970 and it needs to be replaced along with the wiring harness that apparently has rusted together somehow. He thinks it's the ECM.

A google search returns nothing for that exact part number but there are some hits for DENSO 077200-xxxx but these are AC control boxes.

Any clues , tips , or ideas for getting this Sami back in running order?
 

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I would expect an 88 to have a stand-alone distributor - no ECM required. I have no idea why the distributor would be wired to the AC control unit.
 

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Discussion Starter #3
Just spoke with the mechanic. He was mistaken about the DENSO unit.

He's now pointing to another neighboring unit that he still insists is the ECM. The brand is Python and the part number is 139-118 03049(9). The last number is scratched away but it looks like a 9. Google returns nothing for this though.

If it is the ECM that needs replacing, would this one work? 1986 1989 Suzuki Samurai 1 3 Engine Brain Box Computer ECM Control Module | eBay

I might also need a wiring harness... Ideas here?
 

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The 1.6 Track/Kick ECMs were made by Mitsubishi and have a part number starting 33920-. The unknown module may be an aftermarket immobiliser.
 

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Yes that is the ECU, its been rebuilt by a company called Python at some time. On the back of the ECU there will be a sticker with the proper part numbers on it. You will need to check those because you may have a Samurai ECU but it could have been modified to use the Track/Kick ECU.
 

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Discussion Starter #8
Ok, ECU is out but no part numbers besides the Re-manufactured sticker from Python...

Here's a picture of the engine in case it's helpful.
I don't really know where to go from here.

Imgur
 

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If you open the lid of the ECU then there will be a part number of the circuit board, there should also be a number stamped on the top of the connector and the large square chip will have a number Exxx. If you post those numbers then I should be able to identify the ECU.
Check around the cylindrical capacitors for signs of damage, the caps can leak and eat away at the board.
 

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Discussion Starter #10
Circuit board number : JE331B604A

White chip: E528A

Connector: ??? (which connector do you speak of?)

Blue cylindrical things (capacitors?) labeled "50V XXuF" look fine, no signs of leakage or damage

Heres a picture:
http://imgur.com/ewfUGS2

Thanks for your help btw, really appreciate it :)
 

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Here's a picture of the engine in case it's helpful.
I don't really know where to go from here. Imgur
Yes, a picture is worth a thousand words.

I responded earlier to your other post regarding ECU information with part numbers for different years. However, now that I see the engine picture I can tell you are running a Weber carburetor and not throttle body injection on the Tracker engine, so you do not need a ECU of any type if it is installed using your stock Samurai harness.
 

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Discussion Starter #13
I saw that, thanks.

So if the car doesn't even need an ECU - is my mechanic mistaken in telling me to replace it so that plugs get firing again?
 

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IF the vehicle has the original unmodified Samurai wiring harness and Samurai distributor, it does not need an ECU at all to run a Weber carburetor.

If your Samurai harness has been modified to run the Tracker throttle body injection, the ECU would be needed to send a spark signal to the distributor and to power the injector. And that sorta looks like a Tracker distributor, so it may have originally been modified to run the throttle body injection.
 

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The coil looks like it has an igniter fitted to it which would imply that the ECU is running spark, however that looks like a Samurai coil which may not be correct for that setup and could have damaged the igniter. Ask your mechanic if he has tested the coil and igniter.
 
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