Code Rader doesnt communicate with computer
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Freshman User
Joined: Jan 2011
Posts: 44
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From: Carlsbad NM
Code Rader doesnt communicate with computer
I have a 92 f-250 with a 351 Windsor. The check engine light is constantly on. I have had four different code readers put on it but none of them ever actually begin communicating with the trucks computer. Any suggestions as to why this might be happening
FTE Legend
Joined: Jun 2006
Posts: 31,930
Likes: 1,499
From: Ottawa, Ontario
Hopefully you are using an OBD-1 code reader such as the Equus 3145 and are connecting both the EEC TEST connector and the single STI connector to the code reader at the same time.
You can also try to flash the codes on the check engine light, simply put a jumper between the STI and Sig_Rtn pins, turn the key to run and the light should flash through the codes. If this doesn't produce any result you could either have a wiring problem between the test connector and the computer or the computer(EEC or PCM) itself could be damaged.
You can also try to flash the codes on the check engine light, simply put a jumper between the STI and Sig_Rtn pins, turn the key to run and the light should flash through the codes. If this doesn't produce any result you could either have a wiring problem between the test connector and the computer or the computer(EEC or PCM) itself could be damaged.
Posting Guru
Joined: Dec 2009
Posts: 1,053
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From: Calverton
I ran into this same problem today with my new Equus 3145 reader. I have a needle file set that I had got from Ace hardware. I used the little flat bastar# file from the set, to shine up each of the test plug opening contacts, file was a perfect fit...worked great!...I also saved $30.- bucks by making my own cord extension to reach into the cab
Logistics Pro
Joined: Feb 2000
Posts: 3,954
Likes: 47
From: Mesa
I ran into this same problem today with my new Equus 3145 reader. I have a needle file set that I had got from Ace hardware. I used the little flat bastar# file from the set, to shine up each of the test plug opening contacts, file was a perfect fit...worked great!...I also saved $30.- bucks by making my own cord extension to reach into the cab
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Freshman User
Joined: Jan 2011
Posts: 44
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From: Carlsbad NM
So I called support today on this and the OBD-1 code reader does not work on the F-250 that is more than 8500lbs. Mine is 8600.
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Lead Driver
Joined: Feb 2003
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From: Oak Harbor, OH
With the OBD-I on a ford you just need to ground the STI terminal, turn the key on, You will hear the fuel pump run, sensors make noise, then the CEL will blink once. Mash the brake pedal and rock the steering wheel. It will then begin to flash, it will be three digit codes in '92. The haynes manual has a GREAT section on how to retrieve the codes.
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Thread Starter
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Freshman User
Joined: Jan 2011
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From: Carlsbad NM
With the OBD-I on a ford you just need to ground the STI terminal, turn the key on, You will hear the fuel pump run, sensors make noise, then the [B]CEL [/B]will blink once. Mash the brake pedal and rock the steering wheel. It will then begin to flash, it will be three digit codes in '92. The haynes manual has a GREAT section on how to retrieve the codes.
Ok your terminology lost me. I do not know what all that is.
Fleet Owner
Joined: Oct 2005
Posts: 20,783
Likes: 1,751
From: Kentucky
What year truck do you have? Not that it really matters on this subject. But it would help to peel this subject apart and set you straight.
My 1992 F350 is over 8500 GVW, it's OBD-I and my Equus 3145 works just fine.
Fleet Owner
Joined: Aug 2005
Posts: 23,666
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From: Easton,Ks
Not true if it is between the years of 1985 and 1997 for that size truck.
Thread Starter
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Freshman User
Joined: Jan 2011
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From: Carlsbad NM
it is a 92 F-250. I cannot get it to work and I cannot get the check engine light to present the codes either.
Fleet Owner
Joined: Oct 2005
Posts: 20,783
Likes: 1,751
From: Kentucky
$25 to $300+ depends on where you source one from. Some junkyards sell them for cheap, others think they are lined with gold. E-bay has a few sellers with good reputations. Average seems to be around $150 from what I see on these forums most of the time. Rebuilt units from Standard Motor Products have a very good reputation for quality products. NAPA used to carry them.
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