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Swapped in 703, got check engine light

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Old 05-07-2012, 11:46 PM
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Default Swapped in 703, got check engine light

I've been running 4.6l ford Bosch 710's, they were a nice upgrade over the filthy single hole stockers and I was pleased with them. I got them from a junkyard while searching for the elusive 703 injectors.

On another trip to the junkyard I found 8 703's from a couple on neons, so this afternoon I gave them a thurough cleaning and installed new o-rings and installed them in my 96 xj, on my test drive I noticed the check engine light was on, I reset the ecu and the light was still on.

I then decieded to swap the 710's back in since they gave me no trouble before but the check engine light remains!

Any ideas? Thanks ahead of time.
Old 05-08-2012, 12:17 AM
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What did the code read?
Old 05-08-2012, 12:28 AM
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I have no code reader, going to grab one tomorrow
Old 05-08-2012, 12:30 AM
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You can get them read for free...

Try a parts dealer like Autozone. Ask a mechanic, or take it to a dealer.
Old 05-08-2012, 06:28 AM
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Autozone would be free, but most shops and for sure the dealer are going to charge.
Old 05-08-2012, 07:51 AM
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I dont remember for sure but I feel like I was able to use the key on-off-on-off-on method on the 96 to flash the codes. I know 96 is OBDII but is a hacked together OBDI/OBDII.

But most parts stores will pull the codes for free
Old 05-08-2012, 08:18 AM
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I'm just going to purchase a code reader, it would be worth it to me not to have to drive around every time I need it scanned
Old 05-08-2012, 08:40 AM
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Originally Posted by Gary Briggs
I'm just going to purchase a code reader, it would be worth it to me not to have to drive around every time I need it scanned
Good idea Gary......it's good to have one in the tool chest. Equus makes a nice line of code readers, some very inexpensive with the ability to clear codes.

Here is a technique that will work for your 96, BUT it will only give you a 2 digit code. The complete code that you get with a code reader or scan tool is much more helpful.

Let us know what you find!

OBDII models (1996 and “SOME” 1997 models) Put the key into the ignition, push down the odometer reset button, then turn the key to RUN with your finger on the button - and then release the button. The odometer will go through 1111111 through 999999, then display the car's serial number. It will then show the 2 digit error codes. The2 digit code is helpful, but it is not as specific as the full PXXXX code, which is only available using a code reader or scan tool, so generally I recommend using the code reader or scan tool. But if you have a CEL and don’t have access to a code reader or a scan tool, try the odometer technique to point you in the right direction until you can gain access to a code reader.
Old 05-08-2012, 08:52 AM
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The full on board diagnostic programs are pretty sweet, You can download it for your laptop and buy the cable. It able's you to plug in and watch in real time while you drive.
Old 05-08-2012, 07:00 PM
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Swapped in 703, got check engine light-image-1197950665.jpg

Well here she is!
Old 05-08-2012, 07:04 PM
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Idle Air Control Motor Circuit?
Old 05-08-2012, 07:06 PM
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P0505-Idle air control motor circuits

as said above, did you unplug it and leave it unplugged changing your injectors?
Old 05-08-2012, 07:08 PM
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I dont even know what the hell it is, so no!
Old 05-08-2012, 07:16 PM
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and did i actually mess something up? If so how do i fix it?

My experience level isnt that high with computer controlled motors, put me on a 2stroke or a 60's bug and I'm a animal, no problem fixing them!
Old 05-08-2012, 07:25 PM
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Is this it, because I accidentally unplugged it. I'm a douche!



Swapped in 703, got check engine light-image-2863897225.jpg


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