ob2 ls in 1997 civic
 

having some trouble getting my obd2 ls to run. im using the automatic ex harness. my car starts. it will run for like a minute. but dies. it also dies as soon as you give it some throttle ? could anyone give me some help asap

Re: ob2 ls in 1997 civic
 

Check your chassis grounds.

Any CEL's?

What ECU?

Re: ob2 ls in 1997 civic
 

yeah there are cels. and im using a obd2 dx 5 speed computer

Re: ob2 ls in 1997 civic
 

It's not going to run, or run right, on a P2E.

'96-'98 P75 will be plug-n-play for you if you've got it wired right.

Re: ob2 ls in 1997 civic
 

Yep, there's your problem. Both of them.

An LS won't run right on a dx computer. And your CELs probably tell 95% of what the problem is if you scan the codes.

Start by getting a P75. Then, if it's still throwing codes, scan them and post them here.

Re: ob2 ls in 1997 civic
 

okay on the dx computer i threw codes p0118 p0113 and for iac.
on the p75 i tired i threw the same thing and one for vtec

Re: ob2 ls in 1997 civic
 

The auto harness is the biggest issue, 96-98 civic auto harnesses are crap for 5 speed b series swaps you need a 5 speed harness.

Re: ob2 ls in 1997 civic
 

okay here. your auto harness has a 3-wire IAC valve clip i believe. the 5 speed motors use a 2-wire IAC clip. u need to grab a 2-wire clip and splice it to ur harness.

Re: ob2 ls in 1997 civic
 

i have the motor harness for the ls. i just do not have the harness for in side the car. i know the iac and air intake or what ever are the same ? and i cant find the wire for one of them. then the sensor next to the map on the top. i found to plugs that go into it im not sure what one goes there either?

Re: ob2 ls in 1997 civic
 

You cant use that teg harness regardless, You just need it to cut a few clips off it to use on your current harness, I used an ex harness for my c1 swap cause its plug and play and like to avoid all possible headaches.

Re: ob2 ls in 1997 civic
 

what all clips doi have to cut off to use my current harness. is there anyway you could show a diagram or some picture or something. ive never done a b series swap. im just tryin to get it done cause im out of a car and the only reason i did the swap is cause my single cam blew up and i had a ls laying around i was going to build

Re: ob2 ls in 1997 civic
 

Spend some time here: https://honda-tech.com/forums/hybrid-engine-swaps-18/gathering-ek-wiring-information-558245/

Re: ob2 ls in 1997 civic
 

I believe the when you change the IAC plug from 3 to 2 wire you need to repin 2 wires and cut one in your ECU A plug.

Re: ob2 ls in 1997 civic
 

okay so i re did the iac and still nothing. is there anyway its not getting enough fuel?

Re: ob2 ls in 1997 civic
 

You did as itsnotsofast described?

http://www.ff-squad.com/tech/wiring/...-98_a-plug.jpg

Re: ob2 ls in 1997 civic
 

yes i have this done..
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Re: ob2 ls in 1997 civic
 

problem was fuel rail wasnt getting enough fuel