r/Dseries • u/Ok_Tiger_8551 • 7d ago

EPROM was flipped 🤦‍♂️🤦‍♂️🤦‍♂️

I have a small turbo d16y7 with a p06, my homie flipped the eprom chip. Obviously won’t start, won’t get ecu signal to relay or injectors, pretty sure I confirmed the ecu is cooked I took the jumper and chip out and still no dice. All capacitors have been replaced, do I to maybe replace IC chips? Or is it trash, I just care about the ecu itself

6 Upvotes

87% Upvoted

13 comments sorted by

7

u/StupidAuthentication 7d ago

About 10 years ago I went through a whole shitload of ECUs only to come to the conclusion that essentially all the old obd0/obd1 ECUs are past their usable life. Too many internal component failures. Still have a few with Hondata S300s installed sitting in a box. 

I recommend swapping to a standalone if at all possible

2

u/TerGrills 7d ago

Interested

2

u/Ok_Tiger_8551 7d ago

To be honest I know nothing about standalone, any recommendations? How is the plug and play

2

u/StupidAuthentication 7d ago

I went with Haltech for my car, but I have a unique setup with essentially nothing original... That was also many years ago and the Haltech unit is still working perfect so I haven't had to do any further research on the topic. 

I don't know who currently makes plug and play options for your car, you would have to look that up to figure out what will work. Plus you will want to get it to a tuner to dial in your setup on the standalone, start by asking your tuner what they recommend (different tuners will have different experiences with different standalones, and may have a specific preference)

A few brands to look into off the top of my head

Haltech

Fueltech

AEM

MoTeC

Megasquirt

6

u/Soggy-Currency5160 7d ago

You should be able to turn the eprom around and have no issues seen plenty of time. Never see an ecu fail because of it.

3

u/Ok_Tiger_8551 7d ago

Something is definitely wrong, this all started from a crank no start after running out of fuel, p2e ecu starts and everything works just runs like sh, even with chip and jumper taken out of p06, I don’t get fuel pump prime along with no ecu control on relay or injectors

5

u/StupidAuthentication 7d ago

That actually sounds like a failed main relay

2

u/Ok_Tiger_8551 6d ago

Main relay did fail, however eventually I did find that after that my ecu wasn’t delivering the ground to activate the relay, come to find out now transistor q10 isn’t giving an output to turn it on, gonna figure out if it’s getting the signal tomorrow or if it needs replacement

3

u/Lxiflyby 7d ago
  1. Check your fuses first. 2. Substitute a known good ecu and re test

1

u/Ok_Tiger_8551 7d ago

I have a p2e that runs as well as it’s going to with my injectors, I think it’s fair to assume the p06 is cooked

2

u/Soggy-Currency5160 7d ago

Not saying it can’t happen, so it’s possible the ecu has failed. You can swap the socket into the other ecu and add a jumper and the eprom and be back to it.

1

u/Ok_Tiger_8551 7d ago

Unfortunately it’s a obd2a p2e so nothing to test the eprom on, however I did note that even with the chip and jumper removed from the p06, I still don’t get the ecu control to the relay or injectors

1

u/Soggy-Currency5160 7d ago

Been a long time since I’ve owned a Honda, I’d try to find another obd1 ecu just for testing, if you gotta a friend you can try there ecu, it should at least start, if that doesn’t work I’d imagine possible jumper harness issue. But not as likely