I just finished my MPFI swap started it up and the idle is jumping up and down from 900rpm to 1900rpm it is also throwing a #13 code and a #20 code.

MPFI swap on a 1.5 put in 1.6 dizzy have not changed the cam yet will do that if I need to.

This is a race car so only the main wiring is there.

Any help please.

 

Bump

 

those are odd codes... what ecu are you running?

you def. dont need to change the cam though.

 

what is code 20? im to lazy to look at the ECU codes.

 

electrical load detector or something like that?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ham &raquo;</TD></TR><TR><TD CLASS="quote">electrical load detector or something like that?</TD></TR></TABLE>

oh, I think I remember reading that has to do something with the fuse box.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mike84 CRX-GTL &raquo;</TD></TR><TR><TD CLASS="quote">I just finished my MPFI swap started it up and the idle is jumping up and down from 900rpm to 1900rpm it is also throwing a #13 code and a #20 code.

MPFI swap on a 1.5 put in 1.6 dizzy have not changed the cam yet will do that if I need to.

This is a race car so only the main wiring is there.

</TD></TR></TABLE>

did you put in a MPFI ecu? or are you using your stock DPFI ecu?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 88civhatch &raquo;</TD></TR><TR><TD CLASS="quote">

did you put in a MPFI ecu? or are you using your stock DPFI ecu?</TD></TR></TABLE>

it wouldnt run with the dpfi ECU, or it would on 2 cylinders. i dont think hes stupid

 

Sorry was almost asleep when I posted.

The ECU is out of a 90 civic Si.

I was told by OPM that is the best ECU to mod but no mods done yet, stock ECU

 

CODE 20...

Check grounds. Make sure they are all clean and making good contact.
Otherwise check to make sure your negative battery terminal is grounded correct. it shoudl go from tranny to frame to battery.

Not sure what a code #13 is off hand.

 

code #13 is the PA sensor (atmospheric pressure sensor circuit) that is what I came up with a Search of codes.

Any help with this & where is it located.

I need to try to fix it so that I can send the ECU to OPM, I need to get it back by the first of Oct.

 

ZZZ any help????

 

If your idle is jumping like that (up and down) at a steady pace. Its most likely a vacum leak. Mine did that when I left the pcv disconnected by accident. (500rpm to 1600rpm to 500rpm etc...)

Get your hand under the manifold and see if you accidently unpluged the pcv line from the oil catch box black thingy. Then check the pcv.