Ok so my story is simple, i have a chipped p28 ecu, it currently has no CEL and is running great (except for the 2k idle)

i go on to phearable.net and order another chip so i can change the idle, vtec engagement, 2 step, etc..

2 days later i receive my chip and put it in the ecu. upon starting it i get a CEL.

i go to phearable and they say, check the CEL for engine codes, so i go under my dash and my glove box, find a green plastic thing with two plugs, and i take the smallest plug out and bridge it

nothing happens, no blinks, just the same solid CEL..

And just out of curiosity, i tried bridging it with the old chip back on (the one that doesn't give a CEL) and all i get is solid CEL as long as the cable is bridged.

so i just have a few questions, am i not getting the right plug? does it seem like a bad chip since the old chip works perfectly fine? am i asking too many questions?

 

What year Civic? What color wires does the connector have?

 

1993 honda del sol (sorry for not stating that) i don't remember the color of the wires.. i think blue and black?

 

You may have the wrong connector. The service connector of 5th generation Civics has Brn and Grn/Wht wires. I believe the Del Sol is the same.

 

looks exactly like that. i probably have the colors wrong but its that same exact cable on the green plastic thing

 

ok so i believe i solved the mystery, here is what happened

my 1993 del sol swap was originally an automatic transmission. when the mechanic went from auto to manual, he didn't know he was supposed to swap the chipped ecu as well (at least guess so) from the p28-a57 (auto) to the p28-A01 or A02 (manual).

When ordered the chip online i assumed he had a manual p28 which of course, he did not. so when i added the chip, all i got was a CEL.

Does this make sense? or is having an auto p28 ecu and a manual p28 ecu not matter with the chip?

 

how were u running that auto ecu in a 5 spd car and not getting a cel should of blown a code for valve bodies locked or something i forget the acctually code i'd say get a new ecu or try a buddies ecu.....

 

thats a good question.. i need to find a buddy that has a p30 or a chipped p28 ecu so i can check if everything is working properly..

I hope that they just converted the auto ecu into a manual by switching the resistors.... but then again.. it wouldn't be throwing the CEL with the new chip...would it?

Worse case scenerio (my mechanic knew mechanics.. just crap about electronics) is that he changed everything, got the CEL and did something to the internal cableing or harness to remove it or "fix" the problem..

i need your input guys, i really don't know whats going on