OK here it goes my 94 5.0 started surging again and stops when it warms up. Awhile back it was doing this then stopped and idled normal for two weeks and started again today it will surge and almost die also when coming to a stop RPMS will drop to 500 then shoot back up to normal.ive checked vacuum lines checked maf sensor, spark plugs/wires i refilled yesterday with 89 octane could it be something with the fuel system
forgot to mention that i cleaned the IAC couple weeks ago it act like its only running on half power then sometimes all of a sudden a powere surge will kick on and it runs normal.
I cleaned the the MAF with Maf cleaner took it to auto zone to pull codes they couldnt find anything cuz they said my check engine light wasnt on.
OK guys i bought a tester today and i came uo with two codes 13 RPM out of specification during normal idle or d.c. motor does not follw dash spot,and,33 egr not opening or not seated (closed properly) could rpm coming up cause of egr?
Today i cleaned the egr got alot of black deposits out of the openings put it back on with a new gasket and it is now running and idling alot better thank you for all your input and help guys!
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