0bd1 Phearable.net ecu on uk ek4

[dan_p_vti]

right i purchased a Phearable.net obd1 ecu and harness to go on my 1998 ek4 apparently the ecu is for a jdm car and after plugging it in the car wont idle and its miss firing according to the seller its somethin to do with a sensor.any ideas on this?.thanks alot

 

[dan_p_vti]

any one got any ideas?

 

[Vtec6000]

Have you another ecu to try? That is the first thing id try to eliminate the chipped ecu causing the problem. Is the engine check light on?

 

[dan_p_vti]

yea the light is on with the chipped ecu but car is fine with the standard ecu
the bloke i bought it off had it running on his ek4 with no problems. he says its somthing to do with a sensor and its an easy fix hes meant to be getting back to me tommorow on the matter

 

[Vtec6000]

yea the light is on with the chipped ecu but car is fine with the standard ecu
the bloke i bought it off had it running on his ek4 with no problems. he says its somthing to do with a sensor and its an easy fix hes meant to be getting back to me tommorow on the matter

Jump the service connector and see what code its throwing. Your using a obd2-obd1 jumper harness? And is it the same harness he was using or your own?

 

[dan_p_vti]

Jump the service connector and see what code its throwing. Your using a obd2-obd1 jumper harness? And is it the same harness he was using or your own?

yea thats the harness i bought a new one he didnt include the harness

 

[Vtec6000]

yea thats the harness i bought a new one he didnt include the harness

Can you hit vtec with this ecu? The obd1 vtec ecu's look for a signal from "vtec oil pressure switch" which most of the obd2 ecu's do not require. Your jumper harness should have a wire joining the wire of pin A4 to D6 to over come this problem. Post up a pic of your harness and I can tell you if its already wired that way

 

[rvm]

Can you hit vtec with this ecu? The obd1 vtec ecu's look for a signal from "vtec oil pressure switch" which most of the obd2 ecu's do not require. Your jumper harness should have a wire joining the wire of pin A4 to D6 to over come this problem. Post up a pic of your harness and I can tell you if its already wired that way

x 2 I think this might the problem.

 

[dan_p_vti]

going to upload a pic of the harness soon.thanks for all the help guys

 

[dan_p_vti]

hers pics of the harness

and here a pic of like 2wires connected

 

[JIMBOB-EK9]

I cant really tell anything from the pic's you have posted TBH mate!

But if you use this thread:-
http://www.ek9.org/forum/other-technical/201-honda-usefull-ecu-pinouts-obd2b-obd2a-obd1.html#

You should be able to check yourself what Vtec6000 has explaned below!

Can you hit vtec with this ecu? The obd1 vtec ecu's look for a signal from "vtec oil pressure switch" which most of the obd2 ecu's do not require. Your jumper harness should have a wire joining the wire of pin A4 to D6 to over come this problem. Post up a pic of your harness and I can tell you if its already wired that way

Hope this helps mate!