changed plugs in 94 ranger. ran fine next day. next day it was cold and truck wouldn't idle. rechecked gap in plugs and installed new wires. still idling rough. installed fuel filter. doesn't show any codes. changed egr valve. idled better sometimes. cold out today idels like before. unplugged wires to maf sensor and truck ideled fine. when i plugged the connection back up truck died. did this several times with same results. is this an indiation that maf is bad? don't have much hair left. HELP!

 

Welcome to FTE!!

Since this all started with the plugs/wires I would focus there. Did you put dielectric grease in all the boots? Did you get all the wires in the correct location? Have you tried putting the old ones back on? Did you check other connections that you may have bumped while doing the work?

 

The new plugwires had grease in them.I don't have the old wires.I changed the plugs one day and the next day the truck ran fine.The old plugs looked to be original [87000 miles] When I replaced the wires I rechecked the gap in them .0044. Could there be a bad plug? It seems funny that it idles worse when the temp. is cooler. Checked connections and everything seems to be tight.Checked for vaccuum leaks but couldn't find one. The truck runs fine at high speeds. Just out of curiosity would unplugging the MAF sensor make the truck idle up. because like I said the truck didn't die after I did this

 

Try tapping lightly on the MAF with a scwewdriver handle, if it misses with the taps its a bad maf.
Dave

 

Cleaned MAF. Truck is idling perfect.Thanks for your help