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4.0L OHV & SOHC V6 Tech General discussion of 4.0L OHV and SOHC V6 Ford Ranger engines.

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Old 07-06-2010
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another prob

hey guys seems i have one prob after another lately. just did cmp and my truck idles kinda funny. only when in drive, and idling. it seems to jump up and down a few hundred rpm and the truck seems to want to surge forward. when in any other gear seems normal. thanks for help again
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Old 07-06-2010
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Is it throwing a code? Sounds like you could be running lean.
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Old 07-06-2010
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x2. is it wanting to die when its in park and idleing
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Old 07-06-2010
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btw are u ohv or sohc? it will help us figure it out
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Old 07-06-2010
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Vacuum leak? Didn't you just have the upper intake off?

Just a thought.
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Old 07-07-2010
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I'm ohv. It idles real high not wanting to die. Intake was just off.
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Old 07-07-2010
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No codes yet as I reset them after changing cmp.
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Old 07-07-2010
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the only code i have are cylinder 4 and 6 misfire. and lean bank one and two, which i had before. im guessing i put the plug wires on backwords.
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Old 07-07-2010
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anyone have the firing order diagram 4 a 98 4.0?
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Old 07-08-2010
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nm above post, but im wondering on the intake manifold, i know it has a gasket, ill call them o rings on the underneath of the plastic manifold but should there be one on the surface that it mates with?
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