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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 01-01-2011
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sluggish in high rpms

94 xlt 4x4 4.0 seems sluggish at high rpms and randomly bucks.... and at idle it runs at 700 rpms but smooths out to 900 rpms after about 5 mins... i have codes 99, 81, 57 with a flash scanner
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Old 01-02-2011
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anyone?
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Old 01-03-2011
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ok now it wont go over 4k rpms in gear and also have koeo codes 157 and 158... wtf??
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Old 01-13-2011
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guys... i really need help on this... also the flange to the manifold on the y pipe is rusted gone... would that make a difference?
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Old 01-13-2011
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cant help you i dont know anything on OBD 1. Google the codes
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Old 01-16-2011
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solved the problem kinda... i fixed the exhaust leak and weirdly it runs alot better but im not sure if its running at top performance cuz ive never driven a ohv... just a ohc
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Old 01-17-2011
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Hi ,Check your plugs & wires . IN the old days we called it week ignition . I think you have a distrutitor cap & rotor button . A lot of the time the rotor button tip will burn off or will just have moisture in the cap . My thoughts Bud
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Old 01-17-2011
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Leave or push button to drive each time you drive

Hi , Select drive by pushing the gear shift button each time you drive an don't worry you don't need overdrive . Save your money to make your repairs later . You'll burn more gas . My Thoughts Bud
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Old 01-18-2011
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its a 5 speed and i just gave it a tune up and its EDIS so no cap and rotor
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