can someone please help

4

4.6rx7

New Member

May 11, 2006

48

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0

Oct 15, 2006

#1

• Oct 15, 2006

• #1

i have put a 4.6 in my mazda rx7 the coils fire. but it wont start if i run gas through the throttle body it will run. any ideas why the injectors wont pulse? i need any help

 

R

Roger_4.6_96

Founding Member

Jul 16, 2002

1,209

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0

Reno,NV

Oct 16, 2006

#2

• Oct 16, 2006

• #2

I would ask someone who has done a swap. What wiring harness and computer did you run ?

 

4

4.6rx7

New Member

May 11, 2006

48

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Oct 16, 2006

#3

• Oct 16, 2006

• #3

i used a 95 crown vic pi harness

 

TweekedGT

New Member

Jul 22, 2004

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Alberta

Oct 16, 2006

#4

• Oct 16, 2006

• #4

4.6rx7 said:

i used a 95 crown vic pi harness

Click to expand...

What about the ecu?

 

Stang|ess

seeking cyber partner(s)

Oct 18, 2003

941

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37

Hawaii

Oct 16, 2006

#5

• Oct 16, 2006

• #5

fuel pump?

 

4

4.6rx7

New Member

May 11, 2006

48

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Oct 17, 2006

#6

• Oct 17, 2006

• #6

im also using the crown vic ecu and the pump puts out 80 psi i had the fuel rail looped to one line could it be because the presure was so hi instead of 40 psi

 

K

Kilgore Trout

Fried or Broiled ?

10 Year Member

Mar 30, 2005

4,749

95

134

Oct 17, 2006

#7

• Oct 17, 2006

• #7

Is the fuel setup return or returnless?

 

Shiroelex

There's nothing worse than aut

Founding Member

Aug 23, 2001

728

1

27

Westland, MI

Oct 17, 2006

#8

• Oct 17, 2006

• #8

Put a Noid light on an injector harness. I bet you're not getting an injector signal, because of a PATS issue. Unless, you have disabled PATS in the computer beforehand.

 

4

4.6rx7

New Member

May 11, 2006

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Oct 18, 2006

#9

• Oct 18, 2006

• #9

95 crown vic dont have the chip in the key so no pats the setup is return but i set it up returnless by looping the rail with a t

 

R

RoadconeTuning

New Member

Apr 4, 2006

458

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Upstate, SC

Oct 18, 2006

#10

• Oct 18, 2006

• #10

i think the injectors are locked from too much pressure.. jus tlike nitrous solenoids do.

 

jstreet0204

Active Member

Jun 26, 2003

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36

Winston Salem, NC

Oct 18, 2006

#11

• Oct 18, 2006

• #11

4.6rx7 said:

95 crown vic dont have the chip in the key so no pats the setup is return but i set it up returnless by looping the rail with a t

Click to expand...

This is more than likely your problem. You need to set it up with a return line.