x_doug-x

just curious if there was anything wrong with doing this? i been doing it for a while now. i took the motor out of a 96 gsr and put it in a 95 dx coupe. when i first got it in the car had a miss up top really bad when easing the throttle down but nailing it it wasn't so bad. if i just eased the gas to the floor slowly, when it hit v-tec it started backfiring and wouldn't accelerate. i don't think it does this anymore, i haven't really eased the gas and redlined it lately. could this be from running the motor as obd2 in a obd1 car? the plugs and everything plugged in.

Wdpfreak145

Running obd1 distributor? Ecu?

x_doug-x

yea it's a complete obd2 engine in a obd1 car. everything plugged up. i had a extra plug that was prob. for iab's crank sensor or the sensor on top of the throttle body. it's a basically a complete gsr out of a 96 gsr. it plugged rite into the obd1 civic harness. i'm running a obd1 chipped p28. it's a stock type r chrome basemap, but it needs changed for my setup.

x_doug-x

obd2 injectors, alt, distributor, and wire harness plugged up to a obd1 chassis harness. running a chipped obd1 p28

94EG8

Thats the right way to do it. Whatever the issue is its not the wiring.

x_doug-x

thanks, maybe i'll purchase another obd2 distributor and see if it helps.

HondaPartsHero

any check engine lights?

x_doug-x

No sir! No check engine lights.

red-si-eg..

check the map sensor plug thats hanging on the fire wall. that plugs up to the map sensor. the one thats on the wire harness is the wrong one. just replace the 2 and u should be good to go. i got a gsr in my dx hatch too and the was the problem. oh yea u better off getting an obd1 p72. trust me it will be a lot better if u have all the sensor on the gsr. make sure the canister is hooked up too.

x_doug-x

i don't have any check engine lights and figured a map would throw it, i don't recall seeing a map sensor plug hanging on the firewall either?

red-si-eg..

yea its the 3 pin plug by the battery. i though the same thing. ur dx harness is not like ur ex. look on the fire wall by the battery it should be there. i got the same car as u do. i even got my car to pass the state ref. and got it bar'd so i can have it legally in cali.

x_doug-x

if this is true, my map sensor has been unplugged since i put the motor in over a year ago. i'll make sure to check this when i put the motor back in.

red-si-eg..

haha dam. well i hope u fix it. it just one plug by the battery and the brake line. its looks just like the same one on the gsr wire harness. i just leave the one on the wire harness hanging.

94EG8

Only '92 - '93 DX/LX Civics have a firewall mounted MAP sensor with that weird seperate harness. The OP has a '95.

x_doug-x

correct, i looked under the hood today "no engine" searching for that map sensor plug. it's not there.