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Old 01-29-2014, 09:52 AM   #1
DroidTN
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Default 1994 Ranger Diagnostic options

Hey guys, from what I understand, OBD diag tools only work on vehicles 1996 and newer. What are my options to buy an inexpensive diag tool for around $100, software or hardware? An added bonus would be if it would work with newer cars also.

Thanks!!

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Old 01-29-2014, 02:26 PM   #2
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Unless they changed drastically in 94, you should have an EEC-IV diagnostic system...way different than OBD. You can use a jumper wire to get the codes to flash through the check engine light, or hook up an analog volt meter to display the codes through sweeps of the meter. Google pulling EEC-IV codes and you'll get several hits/links that show you how to do it. If I'm wrong someone will correct me and set you right.
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Old 01-29-2014, 02:51 PM   #3
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There's also a youtube video that shows how to do this.
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Old 01-29-2014, 08:50 PM   #4
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Yea I saw a youtube video that shows a guy bridging two connectors with a paperclip. There is the EEC black module I believe with 4 terminals on it and another gray one that has one terminal. My only problem is on my '94 Ranger, I only see the black 4 terminal box, there isn't another gray one, which is required to do that test...unless I am wrong or missing something?
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Old 01-29-2014, 09:02 PM   #5
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I got a OBD1 reader off of Amazon for about $30 for the wifes 94 Explorer. Didn't want to try and count the flashing light.

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Old 01-29-2014, 09:07 PM   #6
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Technically both systems are called OBD. Early is OBD1 and 96+ is OBD2. Newer OBD2 has something called a CAN-bus.

There is a cheap tester that can read Ford OBD1.

Innova OBD I Code Readers 3145

To do more than Ford or include OBD2 you have to spend more. There are very few options in the OBD1+2 market.

I bought one of these for my OBD2 and do my truck the hard way. Although those flashes seem to get harder to count right every time.

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Old 01-29-2014, 09:19 PM   #7
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Don't know what to tell you if the gray STI terminal is missing from your truck. But I did find this link that might help:
http://autorepair.about.com/library/a/1i/bl804i.htm
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Old 01-29-2014, 10:14 PM   #8
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Quote:
Originally Posted by SenorNoob View Post
Technically both systems are called OBD. Early is OBD1 and 96+ is OBD2. Newer OBD2 has something called a CAN-bus.

There is a cheap tester that can read Ford OBD1.

Innova OBD I Code Readers 3145

To do more than Ford or include OBD2 you have to spend more. There are very few options in the OBD1+2 market.

I bought one of these for my OBD2 and do my truck the hard way. Although those flashes seem to get harder to count right every time.

Autel MaxiScan MS300
I found one just like this at O'Reilly for $30 but they said it wouldn't work unless the check engine light was on, which mine isn't.
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Old 01-29-2014, 10:20 PM   #9
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You can read flash codes for free. Reading data off a 94 is going to cost a heap of money.
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Old 01-29-2014, 11:45 PM   #10
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Quote:
Originally Posted by BRUTUS_T_HOG View Post
You can read flash codes for free. Reading data off a 94 is going to cost a heap of money.
For free as in using the KOER method and a paperclip?
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