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#1
04-13-2010, 03:06 PM
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94 4.0L runs rough when first started
My little 94 Ranger 4.0L with around 220,000 is getting to where it runs rough when first started, especially when the engine is hot. It even dies sometimes. The idle seems kinda erratic too. After a minute or two it will usually settle out and run and drive just fine. It will also usually act right when returning to idle after driving. The idle does seem a little high and occasionally under full throttle it feels like it might miss a lick or two. Still gets consistent 21 mpg, last fill up was 18 mpg but I think that I forgot to trip the odometer or something.
Where should I start looking?
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****My Pics**** 1994 Ford Ranger 4.0L 5spd ext cab, stock 1999 Ford F-250SD Powerstroke 4x4, no where near stock 1969 Ford F-100 360, stock 1999 Jeep Grand Cherokee, stock 2000 John Deere 4700 4x4 1956 John Deere 60 1951 John Deere MT 1948 John Deere A 1947 John Deere A Etc. “Government, even in its best state, is but a necessary evil; in its worst state, an intolerable one” The Government cannot give anyone anything that they didn’t first forcibly take from someone else! 
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#2
05-07-2010, 04:41 AM
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Re: 94 4.0L runs rough when first started
Mine did the same thing and it was the EGR valve. Also could be the IAC, Idle Air Control.
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1996 Ranger XLT V6 4.0 5 Speed Manual.
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