No start checked everything

[oneoffaccord]

OK heres a run down with my brothers car.

Its a F20B (Intake, header exhaust)everything else is stock

New NGK spark plugs, fuel filter, distributor cap

Car ran great saturday, [cp]mike came over and we got everything squared away. I take it for a ride sunday, ran great. Brother drives it to work, about 45 miles away from home. i call him, he tells me the check engine light is on. He drives it home, (monday) then drives it to my job yesterday for a inspection and alignment. light still on but runs great. he comes home last night and its misfiring.

I checked the code yesterday and its the map sensor. I replaced the sensor, reset the ecu, code comes up agian for map sensor. I undid the wire loom and theres a broken wire at the butt connector. replace and fix and it runs.

Now heres the issue now. It ran but then it started to stumble. shut it off. start it agian and it runs fine. revs great and so on. shut it off to make sure its ok and now its doesnt wanna run for anything.

Called over [CP]Mike for some help. HERES what we find

It has great spark, fuel, compression is great, timing is on point, ground wires are there, NO CEL,. tried everything. we both have no idea on what else to think.

anyone got any ideas?

[zay386]

u may have burnt the computer out. check your ecu fuse actually check all your fuses. if u dont have a blown fuse try swapping out ecu.

[oneoffaccord]

u may have burnt the computer out. check your ecu fuse actually check all your fuses. if u dont have a blown fuse try swapping out ecu.

we even swapped a p14 in there. samething. no blown fuses. but will check it agian soon

[HondaFan81]

If fuses are in check, what's been done to verify distributor sensors are working properly, could be intermittent?

So now the engine does not start up or run at all?

Are spark plugs copper, iridium or platinum? Did they foul out when running with bad MAP sensor? I know iridiums are more sensitive to rich conditions than copper.

[oneoffaccord]

If fuses are in check, what's been done to verify distributor sensors are working properly, could be intermittent?

So now the engine does not start up or run at all?

Are spark plugs copper, iridium or platinum? Did they foul out when running with bad MAP sensor? I know iridiums are more sensitive to rich conditions than copper.

it doesnt start at all. they are ngk iridiums. the plugs are black as hell. i can swap out the old ones and see what happens

[oneoffaccord]

found out the problem. it was a ground wire no connect near the engine bay. it was a black (2 red dots) wire. just hanging there. grounded the wire and it started up. Just one wire can make you go crazy, always something stupid.