I recently got a 95 integra... it has a rebuilt motor it had hondata s300 but the seller wanted to keep that with the sale so i got the stock ecu a obd1 p75 ecu and just connected it up. When I start the car it takes a minute to start... once started it idles very low and if you give it gas it bogs. There is a check engine light on in my dash. Once the car is warm it drives normal but the check engine light it still on... anyone have any ideas what it could be.... I saw this was cut when i put the ecu back on... idk if this has anything to do with it or not? anyone know what the wire is to.. its blue with black stripe.. thanks

 

Looks like A4 where they would have had the VTEC wired up but that probably wouldn't make it run weird. Pull the CEL and see what it is.

https://honda-tech.com/forums/honda-civic-del-sol-1992-2000-1/how-pull-cel-d4-srs-abs-codes-code-lists-1901557/

 

yeah the car once had vtec now it does not tho

 

The ls ecu won't even be looking for Vtec. You need to figure out what the CEL is for. There is a DIY in the Integra Faq that will show you how to do it. Once you find out what the code is then go from there.

 

Ok i did the self test it came up as number 6 the water temp sensor...now what should i do... can i drive the car like this or ? how do i go about fixing it?

 

You've either got an open in the wires connecting the ECT sensor to the ECU, or you've got a faulty ECT sensor. You could try replacing the ECT sensor. I've got a troubleshooting guide in my Helms but it doesn't tell what the proper voltages should be when it's operating correctly.

 

If you have a volt meter, the wire should read 12+V.

Which pin is that loose wire coming out of? A bad ECT sensor will make your car run like crap. Fix it!

 

 

^^ damn that flow chart is way better than the one I have...

 

do i just the volt meter in the connector? what should all the wires read?

 

still need help... so i had a bad wire on the ECT sensor i fixed that started the car and it idled good now but the check engine light is still on... i tried doing a self diagonstic again but when i did and turn the ignition on the light just stayed there no flashing or anything like that so do i just need to get it reset or something?

 

You can reset the CEL yourself. Dont pay anyone to do that. Google is also a great tool.

 

Just disconnect your battery for 15 secs.

 

i tried that it did not work, i also tried removing the fuses for a few min that didnt work then i tried removing the ecu for a min and that did not work

 

So now you have a solid CEL? In that case you have a faulty ECU.

 

huh?... the car runs fine and it showed me the flashes.. then i fixed the problem so now there are no flashes but i tired to manually reset the cel so it gets off my dash and it wont work..

 

Exactly now you have a Solid CEL that won't go away after resetting it right?

 

yeah but if the ecu was faulty wouldnt it not work properly when the car runs ? the ecu came out of a perfectly fine integra with no CEL on

 

No need for two threads. If you don't want to verify if the ecu is faulty or not then enjoy running in circles.