kayo1486

I have a 91 civic dx coverted to mpfi it had a d15 in it that ran fine and now i have put a b18a1 with a obd1 dizzy p75 ecu with jumper harness all stock internals. The problem im having is that it doesnt rev past 3500 rpms. I checked the cel and it doesnt throw and codes. The check engine light comes on when i dont jump it. As soon as i jump the plug with a paper clip the light goes off. Also my knock sensor isn't hooked up and i just replaced the tps sensor and i checked all my plugs and made sure they are in the right place. Any suggestions?

Fabrik8

You don't have a knock sensor. That engine doesn't have one, and that ECU doesn't have an input for one.

R. Danneskjöld

I suggest you learn how to read.

00_civic757

Sounds like a crank angle sensor inside the dizzy.....the wire(s) might have came loose during the swap

Trunk Impaired

Well................ there's your problem. lol

unuzual kustum

Buy my already converted to OBD1 EF and call it a day.

kayo1486

Naw im going to fix mines

kayo1486

And all the wires are nice and tight i checked already

00_civic757

Then try another obd1 ls dizzy cuz that's most likely the cra
nk position sensor cuz I had the same problem in my ls ef hatch but one of the wires didn't have a good enough connection.....with some solder and heat shrink I was good to go

kayo1486

I will try that thanks