I posted a few times about my 1987 Honda Civic with a b20 swap going into limp mode. I heard so many thoughts about what the reason could be, and ways to fix it that I got totally frustrated.

One guy told me to buy an obd1 ecu and distributor, and the conversion harnesses. Another guy(after working on my car for 8 hours and having his master tech look at it too, could not figure it out. He put a map sensor on it. then he told me the wiring harness was so hacked up that I should get a 92-95 civic harness and dash harness and just rewire the whole thing.

So, I bought the obd1 ecu and distributor, and the engine harness, but I couldn't find the dash harness. so I also bought the conversion harnesses. Getting expensive right, and that still might not fix what the problem was.

So, after my work car being out of commission for 3 months, and having to drive my show car(2004 Dale Earnhardt Jr. Supercharged Monte Carlo SS) for Dominos) I finally took it to Neal Sutton(known all over the Tampa Bay area as one of the best tuners there is-he's on Facebook) This guy looked at the four codes on my obd0 computer, fixed the -#1- mixed up wiring on my now fried map sensor, we looked at the wiring harness and found where it dropped down onto the axle and -#2- ate through one of the wires to the distributor, followed another wire to the plug into the dash harness and realized it was not getting powered so we -#3- undid the tape to find it was completely covering a plug that had the wire we needed, so we hooked that up to the other part of the harness, and that took care of all four codes. Then, just because he is a nice guy, fixed a tachometer issue I had. He did it all in an hour. It was awesome watching this guy use his test equipment like the master he is.

My car is now back on the road and running like a bat out of hell.

 

Oh yeah, and he put on the obd1 ecu and distributor and their conversion harnesses in that hour too.

 

So you completely screwed up the wiring job.

 

Well, it's a good thing that you took it took a competent mechanic. The fact is, with THAT sort of a problem, NO ONE on the internet would have been able to fix t for you.


I hope you enjoy OBD-1. ;-)


Getting an appropriate B20 map would be good, too.


Now go make that quarter mile pass and tell us what you can do.