97 civic/LS swap -- idles high, surges, and throws code P1508
09-20-2011, 12:59 PM
#1
Honda-Tech Member
Thread Starter
Join Date: Jul 2011
Posts: 62
Likes: 0
Received 0 Likes
on
0 Posts
97 civic/LS swap -- idles high, surges, and throws code P1508
I have a problem code 1508 iacv malfunction..replaced iacv did idle relearn procdure and my car still idles high like 2k it starts off at 1500 then creeps to 2k bled coolant checked for vaccum leaks nothing..grey messing with the idle screw Nada..idk wut else to do my car is a 97 ek with a ls swap..I'm guessing the guy used a single cam harnesses cause he did the 3 wire iacv conversion..please can u point me in. The right direction..my idle surges up nd down nd if I unplug the iacv it stablizes.. please help I also checked the tps.. and I'm running and ls ecu..I also want to run the tps wires straight to the ecu how do I go about doing that..thank you very much for your help..
any input helps please..
any input helps please..
Last edited by Former User; 09-20-2011 at 07:06 PM. Reason: Post clean up
09-21-2011, 01:06 PM
#4
Honda-Tech Member
Thread Starter
Join Date: Jul 2011
Posts: 62
Likes: 0
Received 0 Likes
on
0 Posts
Re: 97 civic/LS swap -- idles high, surges, and throws code P1508
This has been done as far the Orange wire on the ecu side .its still there but .up in the engine bay its just laying there
Trending Topics
09-28-2011, 10:14 AM
#9
Re: 97 civic/LS swap -- idles high, surges, and throws code P1508
Post pictures of the ECU and IACV connectors.
09-30-2011, 08:49 AM
#10
Honda-Tech Member
Thread Starter
Join Date: Jul 2011
Posts: 62
Likes: 0
Received 0 Likes
on
0 Posts
Re: 97 civic/LS swap -- idles high, surges, and throws code P1508
Ron it is repined to a12 the car idled fine..then all of a sudden it started to do the idle hunting even after I changed the iacv..
11-10-2011, 08:47 AM
#12
Honda-Tech Member
Thread Starter
Join Date: Jul 2011
Posts: 62
Likes: 0
Received 0 Likes
on
0 Posts
Re: 97 civic/LS swap -- idles high, surges, and throws code P1508
Anybody..the blue/blk wire is connected as well..I checked the wire with a dmm..nd got 12v on that wire and 10v on the other..so I just ran a wire st8 to ecu pin a12 and did the whole relearn procedure..and nothing can somebody Plzz help me..when I disconnect the iacv the idle stablizes..but when I keep that plugged in and disconnect the tps car runs fine just Damn high idle!!! Plzzzzz help
11-11-2011, 04:50 PM
#17
Re: 97 civic/LS swap -- idles high, surges, and throws code P1508
Click on the uploaded picture and copy the IMG code:
It should look something like this:
(* = G)
[IM*]http://i639.photobucket.com/albums/uu115/RonJ_HT/Honda%20Civic/picture_6424.jpg[/IM*]
Then paste the code into your post.
It should look something like this:
(* = G)
[IM*]http://i639.photobucket.com/albums/uu115/RonJ_HT/Honda%20Civic/picture_6424.jpg[/IM*]
Then paste the code into your post.
11-14-2011, 05:02 AM
#19
Honda-Tech Member
Thread Starter
Join Date: Jul 2011
Posts: 62
Likes: 0
Received 0 Likes
on
0 Posts
Re: 97 civic/LS swap -- idles high, surges, and throws code P1508
Sorry i am new to Photobucket..the wire u see is going straight to the first wire on the iacv connector..
11-14-2011, 05:44 AM
#20
Honda-Tech Member
Re: 97 civic/LS swap -- idles high, surges, and throws code P1508
Gosh that wiring is a mess you should get some heatshrink from harborfreight as well as a soldering iron for 4 dollars and than get some solder for 5 bucks from radioshack and get rid of that shitty wiring
11-14-2011, 06:32 AM
#21
Honda-Tech Member
Thread Starter
Join Date: Jul 2011
Posts: 62
Likes: 0
Received 0 Likes
on
0 Posts
Re: 97 civic/LS swap -- idles high, surges, and throws code P1508
Yes I kno that's next on my list going to pull the whole harnesses out and re do everything..just been busy at work
11-14-2011, 04:17 PM
#22
Honda-Tech Member
Thread Starter
Join Date: Jul 2011
Posts: 62
Likes: 0
Received 0 Likes
on
0 Posts
Re: 97 civic/LS swap -- idles high, surges, and throws code P1508
Ok just re did my wires and still nothing!!! Ughh I give up guys I dnt know what else it could be..any sugestions!!!
11-14-2011, 04:40 PM
#24
Honda-Tech Member
Thread Starter
Join Date: Jul 2011
Posts: 62
Likes: 0
Received 0 Likes
on
0 Posts
Re: 97 civic/LS swap -- idles high, surges, and throws code P1508
Becuase i was getting 10v on that wire so I ran that black wire to a12 and still got 10v..I got 12v.on the other wire
11-14-2011, 04:51 PM
#25
Re: 97 civic/LS swap -- idles high, surges, and throws code P1508
I have no idea what you are saying. Where does the black wire go to and why is it spliced into the Blu/Blk wire? A12 should only be pinned to the Blu/Blk wire.