not literally!lol! ok so here's my delemma. i have a 91 civic hatch dx dpfi which i have dropped a d15b sohc vtec in it. only two of the four pistons are firing, the number one and number three, the other two have spark fuel comp. etc. im thinking that it might be my cpu, it is a p28. i have done all the normal changes, timing, dist. etc. and nothing i have done has worked. i thought this might be a common prob. considering there are two cylinders 2, 4, that are not firing and not just one.

 

have you wired up the injectors? if you do not wire it up fully, you will only get #1 and 3 to fire.

copied from hybridgarage.com this is the resource i use to do a dx to mpfi swap.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">Inside car at the ECU plug:

Pins B10 and B12 are empty. Unused pins can be taken from B2 or B11. Some models have a wire located at B12.
Cut orange and white wires off at C1 and C2 and connect them to wires added at B10 and B12. Orange-B10. White-B12. Leave enough wire for next step.
Run wires from C1 and C2 (direct ECU connection) into the engine compartment. Label these wires for later use.
Cut wires at A3 and A7 leaving plenty of wire. Run these wires into the engine compartment and label them for later use.
Outside car

Transfer DX wiring harness over to ZC engine.
TPS and EACV plugs are too short and must be extended.
Be sure to switch green/white and yellow/white wires on TPS
Injectors and injector resistor box

Connect the yellow/black wires from the two DX injector harnesses and run it to the yellow/black wire on the injector resistor box.
Connect the yellow wire from the DX injector to the #1 injector (brown wire).
Connect the red wire from the DX injector and run it to the #3 injector (blue wire).
Connect the A3 wire to the #2 injector (red wire).
Connect the A7 wire to the #4 injector (yellow wire).
Connect the 4 red/black wires from injector resistor box to each injector.
Cylinder position sensor

Connect C1 to blue/green wire on cylinder position sensor plug.
Connect C2 to blue/yellow wire on cylinder position sensor plug.
Thats it. Double check everything and start it up. Good luck! </TD></TR></TABLE>

 

thanx, i dont know why i skipped that step, it even came with the instructions on the wiring harness...damn that was a waste of time! thanks again that answered my question exactly

 

hope you get those pistons to fire bro

 

ok new problem! they're all firing now, thanx again, and it runs at idle, when it starts, but everytime i touch the gas it dies, sometimes i can floor it and it will continue to run but at like 400 rpm any suggestions

 

tps wires? iirc you have to switch them... i've done two mpfi swaps and fixed one and my wiring knowledge is very limited. all the ones i've done have worked.

 

ok switched the wires and nothing happened still runs the same any other suggestions?


Modified by turtles_civic at 3:25 PM 11/27/2005

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by drewthomas14 &raquo;</TD></TR><TR><TD CLASS="quote">tps wires? iirc you have to switch them... i've done two mpfi swaps and fixed one and my wiring knowledge is very limited. all the ones i've done have worked.</TD></TR></TABLE>

you do have to switch them, but i have let 2 swaps go without it, and they ran fine. a year later i swapped them up.

 

ok yeah i switched them and nothing happened even unplugged the damn thing while it was running and nothing happened ya think the tps is bad? the book hinted at the EACV, any sugg.

 

bump help

 

bump

 

mother ******* BUMP!!!! can someone plz help

 

aren't you supposed to change the injector resistor box???... or is that only when swapping a B-series into a DPFI EF?

 

i think thats the b-series cuz mine is wired withought an injector box. i was told that unless im going to go back to odb0 injectors eventually, than i wouldnt need an injector box

 

Aren't you supposed to calibrate the throttle position sensor somehow?

 

what injectors are you running? obd1 or obd0
if 1's you dont need the resistor box, if 0 you do need it.

 

im runnin 1's. ok i got all 4 of them to fire!!!woohoo but now theres another prob. the car stalls as soon as u give it gas it runs and idles perfect purrs like a kitten but give it gas and it's dead. some people are saying a vacuum leak and im just waiting for parts to c if that is what it is any other sugg. if not i'll keep u posted