Check Engine Light comes and goes

[roscoe 0202]

check the computer ground plug by battery that the wires go straight to negative post
roscoe

 

[Kevinh71047]

Ok will look into that also i bought a obd scanner and hooked it up and says dlc cable not responding

 

[Kevinh71047]

I need help with my eec test im missing the single wire to test with my scanner it will not read without it can someone tell me where those wires go like the mas air flow sensor wires too.

 

[roscoe 0202]

the wire you're looking for goes to pin 48 on the computer
roscoe

 

[Kevinh71047]

the wire you're looking for goes to pin 48 on the computer
roscoe

Ok thanks will take a look at it

 

[Kevinh71047]

the wire you're looking for goes to pin 48 on the computer
roscoe

i hooked that wire to a single wire to test the eec but still says check data link connector

 

[Kevinh71047]

the wire you're looking for goes to pin 48 on the computer
roscoe

Just checked that out roscoe pin 48 Didn't do anything

 

[Kevinh71047]

Pin 48 Didn't do anything but i drove it around for 15 miles or so light went off and on and the engine light went off it jolts some like a gear didn't shift out

 

[Kevinh71047]

Pin 48 Didn't do anything but i drove it around for 15 miles or so light went off and on and the engine light went off it jolts some like a gear didn't shift out

 

[roscoe 0202]

sorry if yours does not go to pin 48 I've god a complete wiring diagram for a '91 that is where it says it goes this diagram works on my '92 that was sold to me as a '91 but computer is f2 which is '92
roscoe

 

[Kevinh71047]

Ohh that's ok might be getting rid of this truck anyway

 

[Will23]

Ok will look into that also i bought a obd scanner and hooked it up and says dlc cable not responding

forget the scanner, take back and get your $ back. There is a self diagnose you can do, it gives you the code # and then you look up online, very easy. You can find how to do this on youtube.

 

[Will23]

scanners for 84 to 94 i have found to pretty much be worthless, self diagnose is the only way to get true codes, i hope that helps

 

[Kevinh71047]

forget the scanner, take back and get your $ back. There is a self diagnose you can do, it gives you the code # and then you look up online, very easy. You can find how to do this on youtube.

Did that but now my sti wire is missing and wont work even the scanner always check data link connector

 

[Kevinh71047]

Hey

forget the scanner, take back and get your $ back. There is a self diagnose you can do, it gives you the code # and then you look up online, very easy.

 

[Kevinh71047]

Maf engine. Running
Red 14.30
Black 14.00
Tan blue between 4.0 and 5.60
Red blue 2.60 and 4.10

Engine off
RED 14.0
BLACK 1.3
TAN YELLOW 14.40
RED BLUE 12.50

23

 

[Kevinh71047]

check the egr system by self diagnose

Not the problem something else