Question about 1988 Ford Ranger
Swapped out all sensors and filters. new disrubuter plugs ect,
If all plugs ,wires etc have been done, next i would confirm proper fuel pressure, then I would check throttle position sensor. An old analog ( with sweeping arm) multimeter on ohms, remove connector at TPS and connect to 2 of the pins on TPS .(throttle position sensor) Engine off, rotate throttle, or have someone push it from inside, slowly, gradually and needle of multimeter should sweep across as well, if not try different combination of 2 pins. When you find right combination that makes needle move when throttle pushed, observe the needle as someone pushes throttle slowly and steady from slow to wide open. If the needle jumps, or falls off and comes back up as throttle steadily pushed, then replace the TPS. If the needle slow and steady moves up /across and no stumbling, the TPS is probably ok. Make sure you test it a few times at least.
Posted on Feb 18, 2012
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Posted on Jan 02, 2017
an ignition coil and/or wires seem to cause the most trouble when cold or damp. Sounds like you have a bad coil or wire(s). Spray down ignition coil and wires with water (in a spray bottle). If the engine reacts you may be onto something. I have also seen carbon tracking on the spark plug that can cause this. Cracked coil housings are common on a lot of Ford ignition systems
Posted on Aug 05, 2009
Check the EGR make sure it is not stuck open. Then Check the timing and check for dirt and grease and moister in and on the Distributor cap and on the rotor check spark gap and clean plugs with fine sandpaper.
Posted on Feb 01, 2011
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