OBD Plug
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Elder User
Joined: Oct 2005
Posts: 500
Likes: 1
From: Angleton Tx.
OBD Plug
I am trading my 91 F250 4x4 Diesel for a 97 F250 4x4 Gasser (351) I went to get the truck inspected the other day and they was no OBD lug to plug it in. Whats the deal with that. P.O. said there aint one. Has / Can this OBD plug be removed or maybe this truck just wasn't made with one ????????
BTW, this is really the only page that this truck with fit in. The SD / HD page is raelly all newer trucks , whats up with that
BTW, this is really the only page that this truck with fit in. The SD / HD page is raelly all newer trucks , whats up with that
New User
Joined: Nov 2002
Posts: 12
Likes: 0
I am trading my 91 F250 4x4 Diesel for a 97 F250 4x4 Gasser (351) I went to get the truck inspected the other day and they was no OBD lug to plug it in. Whats the deal with that. P.O. said there aint one. Has / Can this OBD plug be removed or maybe this truck just wasn't made with one ????????
BTW, this is really the only page that this truck with fit in. The SD / HD page is raelly all newer trucks , whats up with that
BTW, this is really the only page that this truck with fit in. The SD / HD page is raelly all newer trucks , whats up with that
I argee with you about the is being the only place for this. There's nothing specific for the 97-98 F250HD & F350's
FTE Legend
Joined: Jun 2006
Posts: 31,930
Likes: 1,499
From: Ottawa, Ontario
Trucks with GVWR over 8500lbs were still OBD1 until the new body style and motors were introduced, so that means 96 and 97 F250HD and heavier trucks had the EEC test connector under the hood. Why don't inspection stations know this, there has got to be millions of these truck out there.
Senior User
Joined: Nov 2005
Posts: 457
Likes: 0
From: Lathrop, MO
Jeff your in the right place.
91's are OBD-1 which means that your diagnostic plugs are under the hood and not under the dash. IIRC they should be on the drivers side wheel well.
The OBD-2's start with the 96's and have a single plug under the dash within reach of the driver.
AFAIK OBD-2 code readers are not compatible with OBD-1 systems. The good news is that most OBD-1 readers are fairly inexpensive.
Hope that helps.
91's are OBD-1 which means that your diagnostic plugs are under the hood and not under the dash. IIRC they should be on the drivers side wheel well.
The OBD-2's start with the 96's and have a single plug under the dash within reach of the driver.
AFAIK OBD-2 code readers are not compatible with OBD-1 systems. The good news is that most OBD-1 readers are fairly inexpensive.
Hope that helps.
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