what would happen if your tps and map sensors are not correctly installed.

 

i have a b20b in my 93 dx. i'm getting codes 3, 7, 14 MAP, TPS, IACV. i'm running the teg ls ecu. my MAP and TPS are from a 96 teg ls. my harness if also from the 96 teg.

on my civic the MAP plug is seperate from the main harness, so i reused it on the B20. my TPS was adjusted the other night using a volt meter, i managed to get it to .512

as far as the IACV in concerned, i have the one that came on the B20 manifold, and i have one that came off a 96 integra ls (they're both 2-wire). the teg one has coolant taps. the b20 one does not. what's strange is that both of them make a humming sound when they're hooked up. a humming that can be heard over the engine idling. could the wires somehow be reversed?

now to the actual question. my engine was revving up and down on its own at idle. researching what i should do, i ended up doing the FITV mod, and it worked. no more strange idle. i still have a problem when driving... it stutters and lurches. when this happens you can tell that fuel delivery has stopped and the engine is just compressing air. most of the time it will stall out once your foot hits the clutch. then if you let it off it'll bump itself back to life, but stall out at a stop. i'm at a loss here. both of these problems were present when i did the FITV mod, so i've ruled that out. but the map error is throwing me for a loop. i've heard it's super uncommon for them to fail. i called 4 parts places, 3 didn't even list them and the one that did wants $560 CAD for one!! could they be mis-wired, or do error codes mean they're cooked? i have a spare TPS but i'd rather try and fix it than change it.

what's my problem? yeah i know, i just wrote a novel.

 

Before you go out and buy anything, you should get a manual and check the tps and map.

 

so i tried switching my ecu back to my stock dx one. started, ran for 5 seconds, abruptly died. started again, 5 seconds, abruptly died. tried to start again, cranked for 10 seconds, nothing, cranked for 10, nothing. now it starts when it wants to, and sputters on the way to idle. sometimes it idles way down, up and down slightly, then down to almost nothing. it might shoot back up for a second or 2, then it dies. strange huh?

for a second i thought it might be something do do with fuel pressure. when i first turn my key into position II you can hear the pump doing its priming or whatever for like 3 seonds, but it sounds like it's struggling, the tone isn't uniform. maybe fuel pump? check fuel pump voltage? check pressure? what should the pressure be at the rail? i'm using the regulator that came on the b20 rail. i also have a regulator from a d15. if anyone knows what pressure it's supposed to be at, that would help. i have a tester.