rough idle help! | Ford Explorer - Ford Ranger Forums - Serious Explorations

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rough idle help!

Joined
January 1, 2012
Messages
36
Reaction score
0
Year, Model & Trim Level
1991 ford explorer EB
just recently i started my 1991 explorer and usually when i first start it, it jumps to about 1500 rpms then drops to 1000 and runs fine, and sounds good, but this time when i started it it only went to about 1100 rpms and then idled real funny. if i shut it off and restart it, then it goes back to normal. and if i dont restart it and drive it with the funny idle i get terrible gas milage. any ideas?
 






MrShorty

Explorer Addict
Joined
December 27, 2001
Messages
5,078
Reaction score
19
City, State
Spanish Fork, UT
Year, Model & Trim Level
92 XLT and '87 Bronco II
Nothing specific, but I'd probably start with a few basic diagnostics: Pull codes (even if the CEL isn't on, check fuel pressure, and check for vacuum leaks.
 






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