EEC IV Test Box

For anything machine shop / speed shop or engine specific. More technical than the range but not quite tuning specific.
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bad86capri
Posts: 163
Joined: 2021 Feb 16, 10:09
Location: Knoxville, TN
Vehicle Information: 1986 Capri 306, Twisted Wedge heads, RPM II Intake, Anderson B3 cam, 80Lbs Siemens Injectors, MAC Longtube Headers, G-Force T5, Spec 6 Puck Clutch, Ford Racing Aluminum Driveshaft.

EEC IV Test Box

Unread post by bad86capri »

Has anyone on here built a EEC IV bench test box? I repair these ECUs and it would be nice to be able to test it on the bench instead of pulling my ecu out everytime to test one that ive repaired.
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decipha
Posts: 5031
Joined: 2021 Feb 15, 12:23
Location: Metairie, LA
Vehicle Information: Work Truck
'19 F-150 3.3L

Re: EEC IV Test Box

Unread post by decipha »

I have a little bench I use to test datalogging and such using an old eec-iv break out box.

What exactly are you wanting to verify?
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bad86capri
Posts: 163
Joined: 2021 Feb 16, 10:09
Location: Knoxville, TN
Vehicle Information: 1986 Capri 306, Twisted Wedge heads, RPM II Intake, Anderson B3 cam, 80Lbs Siemens Injectors, MAC Longtube Headers, G-Force T5, Spec 6 Puck Clutch, Ford Racing Aluminum Driveshaft.

Re: EEC IV Test Box

Unread post by bad86capri »

5v reference, fuel pump turning on then off like normal and CEL. I think most ecu issues revolve around these 3 basic things in an old eec iv.
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bad86capri
Posts: 163
Joined: 2021 Feb 16, 10:09
Location: Knoxville, TN
Vehicle Information: 1986 Capri 306, Twisted Wedge heads, RPM II Intake, Anderson B3 cam, 80Lbs Siemens Injectors, MAC Longtube Headers, G-Force T5, Spec 6 Puck Clutch, Ford Racing Aluminum Driveshaft.

Re: EEC IV Test Box

Unread post by bad86capri »

I've seen the old Rotunda boxes that can be used to test the many different functions of the ecu but those things are hard to find.
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decipha
Posts: 5031
Joined: 2021 Feb 15, 12:23
Location: Metairie, LA
Vehicle Information: Work Truck
'19 F-150 3.3L

Re: EEC IV Test Box

Unread post by decipha »

thats easy enough just power the ecu up and verify 5v on the ref with a volt meter. You can use a bulb to verify the cel and a relay for the fp output.
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motorhead1991
Posts: 18
Joined: 2021 Feb 16, 01:22
Location: Caldwell, Idaho
Vehicle Information: 1990 Ford Ranger commercial:
2.3 turbo, FLH2 ECU, tuned with a Quarterhorse

1990 Ford Ranger Custom:
2.3 NA, e85 fed, Boport 1.5 NA grind cam, also tuned with a Quarterhorse.

Re: EEC IV Test Box

Unread post by motorhead1991 »

I use a Bowling & Grippo JimStim. It also works to power my OBD2 flashing jig.
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wwhite
Posts: 317
Joined: 2021 Feb 16, 15:53
Location: Victoria, BC, Canada
Vehicle Information: 1994 Flarside, XLT, 351w E4OD
SD48b, Quarter Horse, Burn2

Re: EEC IV Test Box

Unread post by wwhite »

rusEFI has blank breakout boards for EEC 60 pin and and 104 pin.
https://rusefi.com/
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bad86capri
Posts: 163
Joined: 2021 Feb 16, 10:09
Location: Knoxville, TN
Vehicle Information: 1986 Capri 306, Twisted Wedge heads, RPM II Intake, Anderson B3 cam, 80Lbs Siemens Injectors, MAC Longtube Headers, G-Force T5, Spec 6 Puck Clutch, Ford Racing Aluminum Driveshaft.

Re: EEC IV Test Box

Unread post by bad86capri »

The JimStim is a pretty cool deal. you can simulate everything in the ecu.
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