88efsedanlx

ok guys i have a 88 ef sedan lx i just converted to mpfi and obd1 I have checked my wiring and can't figure out my problem it seams to run decent at low RPM's around 3k. But if i get over that it starts like falling on its face like stops pulling it backfires and shuts off I'm throwing a code 4, code 7, code 9, and code 15. I've tried 2 new distributors and still does the same thing. Can someone please give me some idea's. Thanks for any help that I recieve.

Code 4 Crank position sensor

Code 7 Throttle position sensor

Code 9 No.1 cylinder position sensor

Code 15 Ignition output signal

90civic-ZC

I would recheck your MPFI wiring conversion and check your mechanical timing along with the ignition timing since you've replaced the distributor twice.

91EFH22

Ive searched but cannot come up with detailed discription (pictures included) about how to do the DPFI>MPFI>Obd-1 swap. Anyone? Sorry to highjack back on topic.... Id check your distributor wiring again....

90civic-ZC

There's a guy that literally just posted up a DPFI to MPFI guide. OBD1 conversion you can buy wiring harness connecters for the dizzy.

https://honda-tech.com/forums/honda-crx-ef-civic-1988-1991-3/my-dpfi-mpfi-writeup-2994327/


http://hondaswap.com/swap-articles/d...writeup-49557/

http://www.google.com/#sclient=psy-a...w=1366&bih=595

88efsedanlx

Ok guys I'm only getting a code 4 when i go to get on my car it cuts out and pops really bad will not pull

crvtectim

I'd say the problem must be in your wiring since the cps is located inside your distributor and you say you've tried 2 other good distributors and get the same results. Double check your wiring to your distributor. What ecu and distributor are you running?

crx_si-r

recheck the distributor wiring. all of you codes were for those sensors.

88efsedanlx

I'm running a d15b7 dizzy and p06 ecu

crx_si-r

Did u remember to swap the wires at the ecu plugs for your distributor?

88efsedanlx

yes c1 and c2 to b10 and b12 then run two wires from c1 and c2 to the wire on the dizzy