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91' Ranger Running Rough....Sometimes


vanmor

New Member
Joined
Jul 10, 2008
Messages
43
Reaction score
0
Points
0
Age
65
Vehicle Year
1991
Make / Model
Ford
Transmission
Manual
I posted something about this a while ago. I can't find the post so I'll start over.

1991 Ford Ranger XLT. 2.3 Liter with AC/PS/5 speed manual transmission. Owned since new. 186,000 miles.

My old Ranger is acting weird. Sometimes it runs just fine. Other times it acts up. Seems to bog down and smells like it's getting too much fuel.

Tach doesn't work either.

Codes Are:

29-VSS or Vehicle Speed Sensor signal voltage too low.

48-VAF or Vane Air Flow sensor voltage signal too high
or
DIS or Distributorless Ignition System-coil 3 circuit failure
or
Loss of left side tach signal
or
EGO or Exhaust Gas Oxygen sensor-signal voltage indicates opposite
from fuel.

66-MAF or Mass Airflow Sensor/VAF or Vane Airflow Sensor voltage signal too
low.
or
TOT Transmission Oil Temperature Sensor signal voltage too low.

I replaced both coil packs and cleaned the MAF sensor. Tach still didn't work but it ran fine. I took it out on the interstate. Got about ten miles before it started bogging down again.

Freaked out a lady and her kid. She pulled up beside me and said my truck was on fire. The cat was red hot so I can see why she was trying to get my attention.

Anyway, my old Ranger needs something but i don't want to just throw parts at it. My step dad said I should replace every sensor on the truck because of it's age.

If I get it running right again, I'm going to put a new exhaust system on. I'm not going to run a cat this time. That is if I can.
 
Last edited:


vanmor

New Member
Joined
Jul 10, 2008
Messages
43
Reaction score
0
Points
0
Age
65
Vehicle Year
1991
Make / Model
Ford
Transmission
Manual
Just noticed I'm on the wrong forum. I'll move it.
 

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