88 XLT Ranger
Member
- Joined
- Jul 23, 2010
- Messages
- 357
- Reaction score
- 0
- Points
- 16
- Age
- 61
- Location
- Pollock Pines Ca
- Vehicle Year
- 1988
- Make / Model
- ford
- Engine Size
- 2.9L
- Transmission
- Automatic
It's to the right of the passenger's footwell behind a kick panel, just ahead of the passenger's door. You have to unbolt a large connector to get the computer assembly out, and then you can take a cover off and inspect it. IIRC, the entire circuit board is dipped in a gray epoxy-coat, so any overheating, cracking, or component damage should be easy to spot.
Thanks for info on the computer
I think I may have found the issue "I hope" I fired it up drove it to town ran perfect. Now on the way home its down the grade 6 miles coasting. I turn off to our road it starts popping missing I pull over shut it off install the scanner and fired it up popping missing. I put it on test the first code was (42) than the two others (74) and (77)
The code (42) is exhaust gas oxygen (EGO) sensor voltage signal always "rich" (high value) does not switch. I did the scanner test twice shut it off than fired it up first code was (42) again. Is this the sensor in the exhaust manifold that is bad? the popping is to much fuel? I have my original one I took off in 2002 we thought was the issue but it was the Ignition Module. I think the one I put on was for a 1990 3.8V6 T-Bird never had an issue until now