after i did my mpfi swap on my d15b1 in my 91 hatch, it started to run ike crap. it idles pretty low, and it boggs down hard, like on the freewY if i dont give it gas really slow it will almost push me forward it boggs down so hard and fast. what could be doin this? does it sound like its not getting enough fuel. i ordered a new pulsation dampner for the fuel line fitting cuz mine was srtipped so that might make it work but im not sure? any ideas???

 

Any codes?
What ECU?
Which distributor?
Which injectors?

Covering all my bases here.

 

no codes i believe its the pm6 ecu and the whole im and dizzy are from the si i got it of which i beleive was an 88 not 100% lol but 99% lol and the timing is allwithin spec. all the parts are off my d16a6 i just havent built the motor so i did this for now.

 

check tps (replace)

 

I agree with dude before me., check voltage at sensor wires, think its like .5 close throttle, and 4.5 open? idk search it. I would get a haynes manual if i were you, you can practically wire your own car with that manual, trouble shoot every sensor. seriously, atleast download the pdf version.

 

alright i check that, thanks guys

 

oh and before i fall asleep when im just drivimg around not giving it much gas it is fine till i step on it. so it is doin this at high rpms, what ever is happening makes my o2 sensor code go off. and how do i reset the ecu or when i disconect the battery does that do it? thank you

 

You can disconnect the negative battery terminal, just leave it off for a bit and it will clear your codes. There's also a fuse under the hood, but I'm not sure if you American's have them in the same order as me. Mine's a 10amp though.

 

where can i download the pdf version. and how do you check the tps?/ how does it come off or do i not need to take it off.