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

 

Check your chassis grounds.

Any CEL's?

What ECU?

 

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

 

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.

 

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.

 

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

 

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.

 

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.

 

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?

 

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.

 

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

 

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

 

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.

 

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

 

You did as itsnotsofast described?

 

yes i have this done..

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problem was fuel rail wasnt getting enough fuel