Steve93mustanglx
Diesel fanatic!
Or, tell me words the search requires, cuz I am having no luck!
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anyone have pics of an OBD-1 chip install??
- Thread starter Steve93mustanglx
- Start date
HighSierra86
Active Member
Remove glove box door
Pull out truck computer (silver metal box)
Unscrew small cover on back of computer
Remove factory chip by pressing on outside plastic tabs and pulling upwards
Insert new chip in place of old
The entire process is quite straight foreward, someone else may care to elaborate or sare pics though.....
Pull out truck computer (silver metal box)
Unscrew small cover on back of computer
Remove factory chip by pressing on outside plastic tabs and pulling upwards
Insert new chip in place of old
The entire process is quite straight foreward, someone else may care to elaborate or sare pics though.....
Steve93mustanglx
Diesel fanatic!
fair enough. Batteries disconnected?
I ask because I came across a fuel filter today... I swear I thought I was a mechanic until this !@#$ing thing came across me. My Midas touch seems to be waning these days, so I figured to be better safe than sorry.
I ask because I came across a fuel filter today... I swear I thought I was a mechanic until this !@#$ing thing came across me. My Midas touch seems to be waning these days, so I figured to be better safe than sorry.
Mudbath
Old Smoky
buddy
Active Member
The PCM is not bolted in, it just slides out, towards the interior of cab. There are two clips on the bottom edge that just need to disengage.
I dont remove the harnesses at all, just twist the PCM out and all wires are long enough to sit PCM on the glove box door. So I dont disconnect batteries either. If I were to remove harnesses then I would disconnect the batteries.
When installing new chip you can ensure everything is good before putting back in by turning IGN on and if you get the Glow cycle its all good. If you dont get glow cycle then something is wrong. Dont crank unless you see the glow cycle. If everything is good and still no glow cycle then swap original chip back in.
I dont remove the harnesses at all, just twist the PCM out and all wires are long enough to sit PCM on the glove box door. So I dont disconnect batteries either. If I were to remove harnesses then I would disconnect the batteries.
When installing new chip you can ensure everything is good before putting back in by turning IGN on and if you get the Glow cycle its all good. If you dont get glow cycle then something is wrong. Dont crank unless you see the glow cycle. If everything is good and still no glow cycle then swap original chip back in.