Ok swapped in OBD1 motor w/ OBD1 conversion harness and p28..codes help...

Thread Tools
 
Search this Thread
 
Old Nov 4, 2004 | 10:35 AM
  #1  
SuicideSlide's Avatar
Thread Starter
Honda-Tech Member
 
Joined: May 2002
Posts: 1,918
Likes: 0
From: Las Vegas, NV, USA
Default Ok swapped in OBD1 motor w/ OBD1 conversion harness and p28..codes help...

*this is for a friend*
Ok swapped in OBD1 motor w/ OBD1 conversion harness and p28..codes help.

codes - 4 crank sensor , 7 tps sensor, code 16 fuel injectors, code 20 electrical load detector, code 10 IAT sensor.

Is it the harness or what checks could I do to make sure. Also any of these related to each other.
Reply
Old Nov 4, 2004 | 10:47 AM
  #2  
Rywire's Avatar
Honda-Tech Member
 
Joined: Nov 2002
Posts: 5,846
Likes: 1
From: San Jose/ Monterey, ca, usa
Default Re: Ok swapped in OBD1 motor w/ OBD1 conversion harness and p28..codes help... (Tur*bLu)

whats the engine setup before? What obd0-1 jumper?
Ryan
Reply
Old Nov 4, 2004 | 11:19 AM
  #3  
Mr_CRX's Avatar
Honda-Tech Member
iTrader: (1)
 
Joined: Jan 2004
Posts: 4,914
Likes: 1
From: SD, CA, USA
Default Re: Ok swapped in OBD1 motor w/ OBD1 conversion harness and p28..codes help... (droppedcrxsi)

Sounds like the codes I got when I went dpfi/obd0 to mpfi/obd1 minus that ELD code.

Let us know the motor/wiring you had before and we can help a little better.
Reply
Old Nov 4, 2004 | 11:52 AM
  #4  
Rywire's Avatar
Honda-Tech Member
 
Joined: Nov 2002
Posts: 5,846
Likes: 1
From: San Jose/ Monterey, ca, usa
Default Re: Ok swapped in OBD1 motor w/ OBD1 conversion harness and p28..codes help... (Mr_CRX)

Ya, it sounds like a messed up mpfi swap.
Ryan
Reply
Old Nov 4, 2004 | 12:37 PM
  #5  
SuicideSlide's Avatar
Thread Starter
Honda-Tech Member
 
Joined: May 2002
Posts: 1,918
Likes: 0
From: Las Vegas, NV, USA
Default Re: Ok swapped in OBD1 motor w/ OBD1 conversion harness and p28..codes help... (droppedcrxsi)

stock factory harness, and d15b2 was his motor. No jumper...
Reply
Old Nov 4, 2004 | 01:05 PM
  #6  
Mr_CRX's Avatar
Honda-Tech Member
iTrader: (1)
 
Joined: Jan 2004
Posts: 4,914
Likes: 1
From: SD, CA, USA
Default Re: Ok swapped in OBD1 motor w/ OBD1 conversion harness and p28..codes help... (Tur*bLu)

Make sure the outer wires on the TPS are switched and that you ground out the third little ground wire. I forgot to attach that ground on mine and threw a code for it.

Retrace your injector wiring since its a mpfi swap. I ran my wires and wire-loomed them, and when I undid the loom to check the connections, one of the wires tugged loose. I made sure the connection was solid again and that code went away.

For the crank sensor code, I found that some of the obd0-obd1 pinouts are contradicting on that. I threw the same code. I had the two wires for the CKP or whatever switched. I switched them and it fixed the problem.

For the IAT code, make sure you have the right plug plugged into the IAT sensor. There are a few plugs that will fit it. I'm not sure if that one needs to be lengthened or not. I believe it does. I cant remember for sure though.

Hope that helps.
Reply
Old Nov 4, 2004 | 01:28 PM
  #7  
SuicideSlide's Avatar
Thread Starter
Honda-Tech Member
 
Joined: May 2002
Posts: 1,918
Likes: 0
From: Las Vegas, NV, USA
Default Re: Ok swapped in OBD1 motor w/ OBD1 conversion harness and p28..codes help... (Mr_CRX)

what is CKP?
Reply
Old Nov 4, 2004 | 02:22 PM
  #8  
Rywire's Avatar
Honda-Tech Member
 
Joined: Nov 2002
Posts: 5,846
Likes: 1
From: San Jose/ Monterey, ca, usa
Default Re: Ok swapped in OBD1 motor w/ OBD1 conversion harness and p28..codes help... (Tur*bLu)

he ment the cps cyl pos sensor. blue/yel and blu/grn they run to the dizzy.
Ryan
Reply
Old Nov 4, 2004 | 02:31 PM
  #9  
Boosted Chemist's Avatar
Honda-Tech Member
iTrader: (1)
 
Joined: Apr 2004
Posts: 8,760
Likes: 0
From: Dark Side of the Moon
Default Re: Ok swapped in OBD1 motor w/ OBD1 conversion harness and p28..codes help... (droppedcrxsi)

are u running obd1 injectors with a resistor box? that might be your problem (code 16)
Reply
Old Nov 4, 2004 | 03:31 PM
  #10  
Mr_CRX's Avatar
Honda-Tech Member
iTrader: (1)
 
Joined: Jan 2004
Posts: 4,914
Likes: 1
From: SD, CA, USA
Default Re: Ok swapped in OBD1 motor w/ OBD1 conversion harness and p28..codes help... (droppedcrxsi)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by droppedcrxsi &raquo;</TD></TR><TR><TD CLASS="quote">he ment the cps cyl pos sensor. blue/yel and blu/grn they run to the dizzy.
Ryan</TD></TR></TABLE>

Yeah, the guide I used at http://www.boosted.org/ecu calls it CKP. I had the positive and negative switched. Some of the diagrams are confusing with the CKP (blue/yel and blue/grn) and the CYP (white and orange). Double check these.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
punkracer
Honda CRX / EF Civic (1988 - 1991)
1
Aug 9, 2011 03:36 AM
punkracer
Tech / Misc
1
Aug 8, 2011 10:00 PM
Dr. D-Series
Honda CRX / EF Civic (1988 - 1991)
6
Oct 29, 2007 08:53 AM
tougetuned_ef
Honda CRX / EF Civic (1988 - 1991)
4
Jun 13, 2006 12:33 PM
ivanson
Honda CRX / EF Civic (1988 - 1991)
2
Dec 4, 2005 12:35 PM




All times are GMT -8. The time now is 12:45 AM.