Just completed MPFI swap and threw a code 4

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Old May 10, 2007 | 05:47 PM
  #1  
drinks2k's Avatar
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From: NOVA, VA, USA
Default Just completed MPFI swap and threw a code 4

I just completed this swap and it flashed four times and paused...the ecu and distributor are good...do you have any suggestion? should I check my wiring somewhere?thanks in advance
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Old May 10, 2007 | 05:54 PM
  #2  
garageEF's Avatar
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From: Under the hood of a 4th gen,, Oregon, usa
Default Re: Just completed MPFI swap and threw a code 4 (drinks2k)

check your dizzy wiring... code 4 is crank position sensor
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Old May 10, 2007 | 06:45 PM
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stemiched's Avatar
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From: bowmansville, pa, usa
Default Re: Just completed MPFI swap and threw a code 4 (garageEF)

check your wires

had/have the same thing myself... but only when i have a passenger with long legs... so im assuming there is a wiggly wire at my ecu, but all i had to usually do is turn off and on the car again and its good so im not worying about it...

for me it only let me rev to 3.5 when i threw that code... i tell my passengers to try to not stretch there legs in that direction of the wires...
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Old May 10, 2007 | 06:59 PM
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zuum's Avatar
 
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From: Tacoma, WA, USA
Default Re: Just completed MPFI swap and threw a code 4 (stemiched)

CPS wires are common to reverse in this conversion, trying swapping the CPS wires and disconnect the battery for bout a minute. then try again
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Old May 10, 2007 | 07:04 PM
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Default Re: Just completed MPFI swap and threw a code 4 (zuum)

check wires b10 and b12 at the ecu,i believe those are the 2 wires for the crank position sensor.
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Old May 10, 2007 | 07:17 PM
  #6  
90sedan's Avatar
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Default Re: Just completed MPFI swap and threw a code 4 (d16efsedan)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by d16efsedan &raquo;</TD></TR><TR><TD CLASS="quote">check wires b10 and b12 at the ecu,i believe those are the 2 wires for the crank position sensor.</TD></TR></TABLE>

Yes they are.


Did you splice into the factory wire that was at b12? If so that is your problem. The wire needs to be depinned and a new wire for the CPS needs to be pinned into b12.
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Old May 10, 2007 | 10:15 PM
  #7  
Ready Set Go's Avatar
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From: Nassau, Long Island, US of A
Default

make sure you have a good solid connection, i went through hell and back to find out what was wrong and it ended up being the pin didnt have a solid connection
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