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Old 04-13-2010, 03:06 PM
alabamafrog alabamafrog is offline
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Default 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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1994 Ford Ranger 4.0L 5spd ext cab, stock
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Old 05-07-2010, 04:41 AM
96Ranger40 96Ranger40 is offline
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Default 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.
1996 Ranger XLT V6 4.0 5 Speed Manual.
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