Truck is a 1986 Ranger super cab, 4x4, 2.9 bored 30 over, C4, 4 inch lift, 31 inch MT and the computer from my '88, it has the stock 3:73's and at warm idle my vac gauge reads 19-21. It always seems to start and run pretty good, except sometimes i can notice at idle a very slight shake.
Even before the lift, tires, and transmission (had A4LD) it never got up to speed very good and the mileage was just barely better. Now it gets 12-13. I checked for codes a few weeks ago and I'm pretty sure i got them fixed. I'll try to recheck them to make sure. Although I know i still have 2 codes that says something about the fuel pump ground. Which i hear is because an '86 isn't wired for that. and i have a code for the transmission because the c4 isn't wired like the A4LD. is there anyway just having a code can make it get bad mileage regardless of what it is?
The dist. has less than 1000 miles on it. I think it's set at 13-14 (I'll recheck that too) the plugs, wires, cap, and rotor are in great shape and relatively new. It also has a new fuel filter, map sensor, tps sensor, vss, oxygen sensor, coolant temp sensor, air filter, flow matched stock sized injectors. and all the wheels spin freely. and for some reason it doesn't take much throttle when accelerating to make my vac. gauge read pretty low (5 or less) and i had the same gauge on my '88 and i was happy with its acceleration and it read about 10 with the same size engine. So, any suggestions? I know i have to recheck for codes and recheck my timing. anything else?
Even before the lift, tires, and transmission (had A4LD) it never got up to speed very good and the mileage was just barely better. Now it gets 12-13. I checked for codes a few weeks ago and I'm pretty sure i got them fixed. I'll try to recheck them to make sure. Although I know i still have 2 codes that says something about the fuel pump ground. Which i hear is because an '86 isn't wired for that. and i have a code for the transmission because the c4 isn't wired like the A4LD. is there anyway just having a code can make it get bad mileage regardless of what it is?
The dist. has less than 1000 miles on it. I think it's set at 13-14 (I'll recheck that too) the plugs, wires, cap, and rotor are in great shape and relatively new. It also has a new fuel filter, map sensor, tps sensor, vss, oxygen sensor, coolant temp sensor, air filter, flow matched stock sized injectors. and all the wheels spin freely. and for some reason it doesn't take much throttle when accelerating to make my vac. gauge read pretty low (5 or less) and i had the same gauge on my '88 and i was happy with its acceleration and it read about 10 with the same size engine. So, any suggestions? I know i have to recheck for codes and recheck my timing. anything else?