More times than not the IAC(Idle air control)which opens further to let additional air in the compensate for increased fuel...the TPS(throttle position sensor) and the IAC work in unison...if you have a manual on your vehicle you can look up the the testing of these item before you go and buy
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I would change the fuel filter, and have your fuel pressure checked for a possible low pressure problem. If that is alright, consider a tune-up with new plugs, possibly new plug wires, distributor cap, and rotor. Also, check your air filter. Keep the old ones running! Makes my day.
You've already eliminated the spark plug & wireset, distributor cap & rotor. Sounds like your car needs a tune-up, specifically, the PCV (positive crankcase ventilation) valve, and/of the EGR (Exhaust Gas Recirculation) valve.
Components checked/replaced during a tune-up are: air filter motor oil motor oil filter breather filter fuel filter(s) fuel strainer PCV valve EGR valve spark plugs spark plug wires ECM or distributor cap & rotor cabin air filter transmission oil filter transmission oil engine coolant check all vacuum hoses and lines
Troubleshooting the no-start condition - from the 1990 Mitsu Mighty Max Repair Manual:
Priority Action Part Type -- Cause 1 Inspect Battery -- Battery Discharged or Faulty. 2 Inspect Battery Cable -- Corroded, Broken, Shorted or Poorly Connected Battery Cable. 3 Inspect Distributor Cap -- Distributor Cap Cracked or Burned. 3 Inspect Fuel Filter -- Clogged or Dirty Fuel Filter. 5 Inspect Ignition Coil -- Faulty Ignition Coil. 6 Inspect Wireset -- Worn, Damaged or Faulty Spark Plug Wire(s). 7 Inspect Spark Plug -- Incorrectly Gapped or Fouled Spark Plug(s). 8 Inspect Starter -- Starter Motor Faulty. 9 Inspect Fuel Pump -- Low Fuel Pressure. 10 Inspect Solenoid Switch -- Faulty Starter Solenoid Switch. 11 Inspect Fuel Pump Relay -- Faulty Fuel Pump Relay. 12 Inspect Fuel Injector Pressure Regulator -- Faulty Fuel Injector Pressure Regulator. 13 Inspect Ignition Switch -- Improperly Connected or Faulty Ignition Switch. 14 Inspect Starter Drive -- Faulty Starter Drive. 15 Inspect Fuel Injector -- Dirty or Worn Fuel Injectors. 16 Inspect Fuel Pump Strainer -- Clogged or Dirty Fuel Pump Strainerat. 17 Inspect Engine Control Computer -- Incorrect Operating Information Being Delivered and Sent From The EEC. 18 Inspect Fuel Tank -- Fuel Tank Empty. 19 Inspect Carburetor -- Carburetor Flooded or Faulty Choke. 20 Inspect Distributor -- Worn, Loose, or Incorrectly Installed Distributor.
Here is a list. Bad timing,dirty air filter,cheap gas,old spark plugs,bad spark plug wires,bad fuel pump,bad fuel regulator,bad exhaust system meaning full of holes,dirty oil and oil filter,dirty fuel filter.
This would include your spark plugs or coils, the wires, a new distributor cap, an oil change, air filter, fuel filter, and a coolant flush. A tune up can make a car run like new again. Some don't change the fuel filter on a tune up but I have always said it is best too. They can get clogged up over time.
Could be EGR - Fuel Filter - Fuel Pump or damaged Gas Tank. I'm sure you'll find the problem after checking these items. The fuel filter is the cheapest and the most necessary since the car is 9 yrs old. The other items really shouldn't need maintenance yet but freaky things happen. Good luck!
My 96 Pajero SWB 3.0 would loose power as soon as i accelerate. It feels like the spark plugs are miss firing or if the engine was flooded.
I did a general service which included oil change, oil filter, fuel filter, air filter, spark plugs i checked my O2 sensor, dissembled and cleaned throttle body and sensors. Cleaned air intake sensor as well as the distributer etc.
Problem not solved, still loose power when i accelerate....can it be something wrong with my ECU??
My A/C control isnt working at all. Found a 15Amp fuse that was blown but when replaced it shorts again. Where can i get a wiring diagram of the heater/a/c system for my vehicle model?