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koeo test problem

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Old 08-02-2008, 05:18 PM
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jssblues
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Default koeo test problem

to do a self test for codes it says you are supposed to hook the sti to ground but it is as if the sti has constant power so it arcs out on the negative batt terminal.............doesnt make sense
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Old 08-02-2008, 05:23 PM
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AdderMk2
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Default RE: koeo test problem

you are connecting the small gray connector to ground.... right
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Old 08-02-2008, 05:32 PM
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KFC
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Default RE: koeo test problem

EEC-IV?

on the EEC-IV you jump the STI to pin 2.

If you want to connect a test lamp or volt meter, so you can get the coads from under the hood instead of the engine light, you attach those to the + terminal and probe pin 4. At least...that's how it works on both my Mustang and T-bird EEC-IV systems.
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Old 08-02-2008, 05:46 PM
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Default RE: koeo test problem

can you do this with a digital voltmeter?????????????
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Old 08-02-2008, 05:55 PM
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Default RE: koeo test problem

no


and all you have to do is hook the gray connector to ground while the key is off, then go inside the car and turn the key on.

watch your CEL and count the blinks.

(unless you have an 88.. I think thats the year that didnt have a CEL)
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Old 08-02-2008, 06:11 PM
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jssblues
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Default RE: koeo test problem

'88 gt no cel
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Old 08-02-2008, 06:19 PM
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Default RE: koeo test problem

i was told you could use digital voltmeter using the continuity setting
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Old 08-02-2008, 06:35 PM
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Joel5.0
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Default RE: koeo test problem

If the STI terminal has 12-vdc all the time...... you are trying to use the wrong terminal. ... DO NOT install a jumper between the SIGRTN terminal at the VIP connector and that wire.... the ECM will fry. Make sure you have the correct wire, not the one (similar to the STI) used for the underhood light (if there was one installed).
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Old 08-02-2008, 07:15 PM
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Default RE: koeo test problem

my sti is black, cannot find any other wire, i know it should be gray
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Old 08-02-2008, 07:22 PM
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AdderMk2
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Default RE: koeo test problem

ORIGINAL: jssblues

my sti is black, cannot find any other wire, i know it should be gray
your STI is NOT black... you are probably trying to connect to the under hood light like joel said... it should be in a black piece of plastic marked EEC TEST, and should be near the drivers strut tower
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