pi swap....computer?

A

able2flyy

Member

Oct 21, 2004

33

0

6

Oct 14, 2006

#1

• Oct 14, 2006

• #1

Hey i cant get a straight answer. I did a pi swap in my 96gt and i used the 96 wiring harness and computer but i cant get rid of my check engine light for the iac valve and i tried a new(used but good valve) it didnt do anything and then i tried a used t.b. and plenum and the stalling went away but the light is still there and it idles high.....i was wondering if it has anything to do with the computer or if changing the computer for a computer for a pi motor would help performance at all?

 

mrvax

Stay thirsty my friends

Founding Member

Nov 29, 1999

5,225

3

79

SN Moderator: Orlando, Fl.

Oct 15, 2006

#2

• Oct 15, 2006

• #2

Are you talking about a headswap? Most people that do one, myself included, find that the stock computer works just fine.

Sounds like your problem is not related to the headswap unless something was re-connected improperly. Take it to a good mechanic and have him diagnose it. Don't blow money on parts hit-or-miss.

 

TweekedGT

New Member

Jul 22, 2004

1,274

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Alberta

Oct 15, 2006

#3

• Oct 15, 2006

• #3

I never had a problem with my headswap either. You scanned the codes and it is IAC for sure? It won't be your computer just from the headswap.

 

A

able2flyy

Member

Oct 21, 2004

33

0

6

Oct 15, 2006

#4

• Oct 15, 2006

• #4

no i did a whole engine swap...it might just be that my computer is bad also...because the other day my fan wasnt coming on either when it was supposed to

 

four six

Member

Jan 19, 2006

506

2

18

Hobart, IN

Oct 15, 2006

#5

• Oct 15, 2006

• #5

does he need a newer harness?

 

Dusstbuster

I love meat more than anything! I just have a spec

May 31, 2004

1,462

33

64

Moorhead, Minnesota

Oct 15, 2006

#6

• Oct 15, 2006

• #6

Yeah if you did an entire PI engine swap the harness might have changed and could the be cause of your problems...off the top of my head the two things that are majorly different between an NPI and PI engine are the fuel system return style and the COP's vs. coil packs.

 

DropTopPony

Noob Slayer

Founding Member

Aug 13, 2002

2,570

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48

south jersey

Oct 15, 2006

#7

• Oct 15, 2006

• #7

Dusstbuster said:

Yeah if you did an entire PI engine swap the harness might have changed and could the be cause of your problems...off the top of my head the two things that are majorly different between an NPI and PI engine are the fuel system return style and the COP's vs. coil packs.

Click to expand...

those things shouldn't be an issue if he reused his fuel rails and coil packs from the NPI set up.

 

jstreet0204

Active Member

Jun 26, 2003

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36

Winston Salem, NC

Oct 15, 2006

#8

• Oct 15, 2006

• #8

Dusstbuster said:

Yeah if you did an entire PI engine swap the harness might have changed and could the be cause of your problems...off the top of my head the two things that are majorly different between an NPI and PI engine are the fuel system return style and the COP's vs. coil packs.

Click to expand...

His harness will work fine. If he used the things you mentioned off the PI car, his car wouldn't even be running with the current harness.

 

Dusstbuster

I love meat more than anything! I just have a spec

May 31, 2004

1,462

33

64

Moorhead, Minnesota

Oct 15, 2006

#9

• Oct 15, 2006

• #9

AH..nevermind then! Just throwing it out there in case he didn't realize that.

 

aleborjas

New Member

Sep 11, 2005

610

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0

Oct 16, 2006

#10

• Oct 16, 2006

• #10

get a new IAC and check the IAC cables and problem gone... the engien has the same conectors and you only used the longblock not the sensors... and the iac are exact!

 

R

Roger_4.6_96

Founding Member

Jul 16, 2002

1,209

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Reno,NV

Oct 16, 2006

#11

• Oct 16, 2006

• #11

Maybe if you post the code it will be easyer to answer. Some times the ecu gives codes that say one thing and mean another.