I posted this long ago but since put the car on the back burner but now I'm digging into it again.


I removed the ecu and it's an IPT 02D011f0-1500. I don't think this is the stock ECU. Everything looks fine inside the box. I have a 95Si with an 88? JDM 1.6 Vtec if I remember correctly this is what the previous owner told me.

I was told here that my car takes a P30 ECU but I don't know for sure because it's an 88 JDM engine.

I need to know if there's a way to test the existing cpu
I need to know what CPU will work in my 95 del sol with an 88 JDM 1.6 DOHC. Am I stuck with a P30 or are there other options?
What other things can cause a no-spark condition?

Thanks

 

There were multiple manufacturers of OE ECU's for Honda in the mid 90's... IPT was one of them. The "11F0" is one circuit board version, not the part number. Two white stickers are normally found on the ECU... one on the edge of the ECU frame and the other across the top edge of the grey ECU receptacle just under the frame bridge. If neither are present, there are other ways to identify the ECU. Post a photo of the top of the ECU board without the lid on it.

Incidentally, for your particular Del Sol application, it is absolutely meaningless as to what year the engine is from. Do NOT focus on the fact that your JDM B16A is from an '88 CRX. The important part is the year of your Del Sol... and since it is a 1995, you will need an OBD-1 (grey 2-horizontal-row ECU socket/receptacle). The stock part numbers for a B16A would be USDM - 37820-P30-A01 and JDM - 37820-P30-J01. Outside of this, you could use an ECU (say a P28 - for a D16Z6 as an example) that is modified with a Hondata S300 and you can program it with a B16A style calibration.

Lastly, if you suspect that the ECU is causing the lack of spark, you could attempt to start the car with ANY known good ECU that plugs into your wiring. I do not suggest that you drive the car with the wrong calibration, but starting the engine, merely for a test, will not put it at risk. Don't you have another Del Sol (or two) at your disposal ?

 

OK, thanks so much for that info.
No, I'm down to one del sol.
No white stickers anywhere on the ECU.
What other things can cause a no-spark issue?


Here's the inside of the computer. It looks pristine. No burned capacitors et...

 

Your ECU appears to be a P28. The largest chip on the board (near the bottom right corner just above the SST chip) contains the original calibration type AND the "safe" mode programming (The primary engine instruction is designated on the chip by version - "301" in this case). Unfortunately, in this case, your ECU has the SST chip in the bottom right hand corner which contains custom programming (the J1 jumper between the two chips essentially directs the ECU to run using the auxiliary chip (SST) location for engine operation instructions instead of the original primary chip.

The capacitors all appear to be original.

 

A main relay failure will cause a no spark condition but that would also cause a no fuel condition as well. Have you checked to see if you have fuel pressure?

 

I can't remember.... I'd check now but the battery went dead from sitting so long. gotta buy a new battery then I'll do the test. THANKS

 

Could also be a bad distributor if the main relay checks out. Try a known good one to be safe.

 

Distributor needs to report tdc sensor to ecu. Ecu sees engine turning with this information and tells the ignitor when to fire. Ignition coil in distributor must be charging and stepping up voltage. Test ignition coil.

 

thanks... i forgot to mention that I bought a new distributor. I also checked the timing marks at TDC et...
I just bought a battery tonight and will install tomorrow. who knows maybe my battery was the problem all along. I don't think so because it was cranking the motor... but at least now I can start testing again.

 

did you figure it out?

 

No, haven't had a chance to look at it yet. I'm trying to buy a clean 99 Nissan Frontier so that's taking-up all of my time, thoughts and energy as well as other things.

 

I installed a brand new complete distributor so for now I'm going to assume that that isn't the problem

does anyone have a list of things that can cause a no-spark situation besides the ECU? Is there anyone in SW Florida with a known good ECU that I can try to see if I can get spark? THANKS

 

it ran great when it was running and I could really feel the vtec kicking-in. why is it unfortunate? does it make the car less efficient? THANKS

 

You really don't know what calibration is on the custom chip... not to mention that the ECU has been modified. Didn't you say that you own another '92-95 Honda that runs ?

 

I sold it... The ECU on it went out too..This sol was owned by a hotrodder who -when I bought it- was going though a litany of hotrod mods he had done to it to impress me. For $200 neither did I care. I'm considering sending my ECU to an Ebay guy who refurbishes them. The only problem is that I don't know for sure if mine is bad. So i'm also searching for some local Honda guys or a scrap yard with ecu's. what a PITA are these fool injected cars.

 

Post a picture of the engine instead of trying to guess about what you have. Now specifically the engine block stamp with the head in clear view.

 

 

In one picture so it shows the stamps on the head.

Buying a new distributor means nothing unless it's oem. You still need to test it.

 

I reinstalled the orig distributor and still no spark. it's not likely that I have two bad distributors one of which is brand new.

 

Yes, it is, especially if you haven't tested either one.

 

Ive had lots of new things be dead on arrival. It happens. But no matter the case, testing the system at each section along the path for voltage and correct resistance and all that would be the best way to go. Throwing parts at it is like rolling the dice every time

That said I have had ok luck with new aftermarket chinese distributors. Maybe one bad out of a big handful. Thats what amazon returns are for. But we tested/found an issue, didnt just order another and hoped

 

could be a bad coil or icm.

https://www.team-integra.net/threads...ooting.342735/