Re: 2000 Ranger check engine light
If it has a distributor, try checking the cap and rotor button for cracks, burning, and wear.
Also you should trace back your vacuum hoses and see if any of them go into a MAP (Manifold Absolubte Pressure) sensor. A cracked or missing hose or a loose plug on this may cause the problems.
It will have either a MAP or MAF (Measured? Air Flow) sensor. If you cannot find a MAP, look for a MAF in the plastic intake snorkel tubing. CHeck the plug on that too.
I suggest you get a mechanic to test the sensor, and also the fuel pressure at the rail. Another thing to check is whether the catalytic convertor (s?) is/are blocked.
Is it running rich?
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