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#1
12-24-2003, 05:36 PM
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MPFI swap problem
Hi,
Just fixed the gas leak problem on the SI manifold. Well, i hooked up all the hoses and doubled checked everything. Started it up took quite a bit of cranking but i finally got it going. It seemed to idle fine I didnt wanna drive it quite yet. Anyways, I let it idle for about 5 mins and then shut it off. I checked my ECU and im getting only one code- Code 4 I know this is for the Crank Angle Sensor What should i check. Also, anyone got a good pic or diagram on how to set up the vacumm hoses from a DX to a SI manifold? Thanks
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1990 Honda Civic LX 5 Speed 1.5 Liter SOHC K&N Cone Filter APC Short Shifter 1988 Honda Civic STD Hatch 
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#3
12-24-2003, 06:04 PM
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Yea, i used the SI dizzy.
I followed all the directions as best i could. The car starts and idles good. But im still worried about the code 4.  The car really smells of fumes and I dont know if this has to do with it. Any other ideas. Its the only code im getting. What could I have got wrong while doing this MPFI swap? Thanks
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1990 Honda Civic LX 5 Speed 1.5 Liter SOHC K&N Cone Filter APC Short Shifter 1988 Honda Civic STD Hatch
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#4
12-24-2003, 06:16 PM
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Yeah.. Did you use the Si distributor?
There should be 2 extra wires coming off it Did you used good quality shielded wire for these? I have heard of people correcting this problem by changing to a higher quality wire from a cheaper one ... I don't know if this was really the fix... or bad connections or what....
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#5
12-24-2003, 06:23 PM
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Yes, i have also heard of using shielded wires.
Quick question: If the car starts and idles does that mean I can rule out the wire depining in the ECU? Cause thats what Im kinda worried about. Also, what kind of shielded wires can I use? Thanks
__________________
1990 Honda Civic LX 5 Speed 1.5 Liter SOHC K&N Cone Filter APC Short Shifter 1988 Honda Civic STD Hatch
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#6
12-24-2003, 08:52 PM
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I searched all the past MPFI swap threads and found someone with the same problem getting a Code 4.
He said the problem was in the B area of the swap. Im assuming he meant moving the B wires to their appropiate locations. That is the thing I am worried about. But I doubled checked it and it looked good. Thanks
__________________
1990 Honda Civic LX 5 Speed 1.5 Liter SOHC K&N Cone Filter APC Short Shifter 1988 Honda Civic STD Hatch
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#7
12-24-2003, 08:54 PM
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Re: MPFI swap problem
Don't know if this will help or not ... as some of the tutorials/howto's are a little confusing.... but this one seems rather well written.
http://www.fourthgenhatch.com/mpfi.html
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