Weird EEC/ECM Plug 90 Ranger

[EricNobody]

so, basically, the truck starts, but dies out quick, seems starved to me, checking the usual culprits, when i went to pull codes via a jumper wire, i noticed that my EEC/ECM plug is similar but different from all the diagrams and pictures i see, I just need quick verification that the "odd pin" is probably the self test wire that is separated on most rangers. I have a feeling this engine came outta something else, and it'd be helpful to know what.

I just really need to know if that's the self test pin, and if it is, are the remaining pins the same, i need to finish testing my fuel systems while its not raining cats and dogs.

THANKS ALL!

 

[FritzTKatt]

As far as I remember the self test pin is that lonely, single wire with the same style female connection on it.

 

[Mazda]

Where did you pull that connector from. Doesn't look like the test connector. Maybe someone spliced in a different one. Looks really new to have been in a 90 ranger.

 

[EricNobody]

That's where the confusion comes in. It may be a yard engine, its got some obviously Frankensteined wiring in the bay.



The connector was below my dash, just dangling from behind the trans





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[kunar]

i dont recognize that connector, but its not the eec test connector. the one youre looking for should be under the hood on the passengers side inner fender

 

[FritzTKatt]

If my truck wasn't 3k miles away i'd post pics. That goes in the engine bay on the driver inner fender. At least thats where they are on a 94 2.3 and 4.0... and when i did eec tests with a multimeter/buzzbox i had to jump the pins in some order. Google eec iv tests...

 

[EricNobody]

Ok, I know the procedure, most the locations I've dealt with eec locations were right around where this one is, lol.



I was just unsure as this truck was previously owned by a jugallo or WTH they're called. I figured the wiring would be as bad as his tattoos





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[adsm08]

Yeah, that isn't an EEC IV self test plug. Especially if it is in the cab.

On a 90 it will be at the back of the engine bay on the passenger side.

 

[EricNobody]

Not there, not anywhere in the engine bay. That is the only visible plug anywhere that resembles in size and or shape, my plug.





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[Snoranger]

The plug in the pic looks like its for the door chime.

 

[EricNobody]

Well that may explain why there is no chime lol!



Can anyone point me to a picture of the eeciv in its stock location on a 90 2.3l?





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[EricNobody]

Eeciv PORT location. Sorry







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[Snoranger]

Well that may explain why there is no chime lol!



Can anyone point me to a picture of the eeciv in its stock location on a 90 2.3l?

It should be attached to the main fuse block under the hood.

 

[EricNobody]

Brilliant! Found! However, do you think this just may be part of the problem? Or would the corrosion and debris in the plug not lead to a fuel delivery problem?



And how should I solve it? Replace the harness, or just install a yard plug?





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[adsm08]

Clean the plug and forget about it.

I severely doubt corrosion on the test plug will cause an issue with the fuel delivery system.

I would check fuel pressure and then when it comes up zilch I would replace the pump.