O/T: '91 Dakota hesitation/surging

MeAnthony

Member
I recently bought this truck, "91 Dakota, V6, 5 spd., 4x4. The pickup plate in the dist. was bad, previous owner couldn"t figure it out, let it sit for 2 years.

I"ve put a couple hundred miles on it now. It definitely surges, particularly between 2,000 and 3,000 RPM, worse after it warms up. It has dual exhaust, both tips have black residue. Would the dual exhaust conversion affect readings by the O2 sensor?

Only one code in the computer, references the "vehicle speed/distance sensor". I have changed this with a used but known good part, code comes back anyway. I suspect a wiring issue. Any other suggestions? Would this problem create the surging?

Your time and responses are appreciated.

Thanks,

Anthony
 
Pull the censor in the throtle body and clean them up real well.I would say replace but I forget wich one made mine do that(and there not cheap)After there clean if it still does it make sure the cattalitic converter isn't pluged. The other thing is the fuel filter under the box or the pump is weak.A weak fuel pump can cause a surge and eventualy will quit completaly.
 
I would look at Map sensor . Make sure it has good vac supply to it . Any vac leaks can make it run rich , egr leaking ? Next I'd wanna see coolant temp senor readings .
 

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