having some problems with my obd1 itr ef. i think It has something to do with my starting and charging system. After i drive my car and come back 10 min later to start it the batt is pretty much drained and its brand new i have to use a batt jumper everytime to start it. It will not run with out a charger hooked up to it at all times. as soon as i take the jumer off my lights start to dim tach stops working and car dies. When i have the jumper hooked up my batt is reading 13.5-14 volts and the motor has a very small miss at idle and when i take the jumper off voltage drops fast but it stops missing between 10-13volts and then dies. My batt has been relocated i have a ground hooked up to my body and two on my block even put a ground on my alt car still dies. Any ideas what should i double check? Used my volt meter and check voltage at the alt solid 14.7.........Maybe i have a bad ground somewhere? I know i have solid spark and constant fuel pressure timing is dead on.

 

switched around some grounds and drove my car around the block it shut off half way am getting code 0 fuel pump will not prime checked my ecu fuse and a couple others they are all good. does any one have a wiring diagram including the fuse boxes and stock ground locations? or can anyone tell me where i need to place my grounds? does the alt wire go on the left and the starter wire go on the right in my fuse box? maybe i have those two mixed up.

90 civic si 97 spec itr converted to obd1 chipped pr4 ecu from phearable

 

sound like a ground problem if not multiple problems double check the grounds also search for the diagram not hard or call autozone to print one for you they own alldata

 

Switched around my grounds neg post of chassis, neg post to trans bracket, valve cover to rad support, and cleaned the ecu ground on thermostat housing. Still have code 0. I think i fried my ecu by driving my car around the block with batt booster hooked up. Seems very possible to me. But none of my fuses were blown.

 

any body?

 

I had to battery boost drive before, but it never toasted anything for me...
Did you get your alternater checked?

 

took my volt meter measured about 13.5 - 14 volts at alternator still have code 0 fuel pump will not prime

 

Take out your main relay and open it up.
Look at all the solder joints. Look up pictures of
"Dry Joints" if your notfamiliar with the term.
Look for dry solder joints. If you see any re-solder those
joints. Then give it a shot.

E : make sure all your grounds are on a solid bare metal contact as well.
E2:as for switching the alt and batt wires in the fuse box.. If you look at the fuse
box with it shaped like a U or ||_||.. The right should be the black. and the left should be the white.

 

BUMP will look that up im looking at my fuse box in the shape as an N i have the alt/ground/idk on the left and the starter wire on the right closest to the ecu fuse


ANy other ideas help me out ppl