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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 10-11-2016
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I am: Jim
Join Date: Feb 2016
Location: Lino lakes mn
Vehicle: 1998 Ranger
Drive Type: 4x4
Engine: 4.0
Posts: 4
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98 ranger. Cold start rough idle

My 98 Ford Ranger4.0 is having an issue when it's cold starting it's hard to start and has extremely rough idle it sounds like it's only running on 4 cylinders then after about 30 seconds to a minute you hear another cylinder kick in and then all of a sudden all of them kicking it runs smooth and never have a problem. I have replaced IAC valve,mass air flow sensor, clean the throttle body replace spark plugs and wires and it's still acts up I'm at a loss as to what it can be. I do have a check engine light that reads code 1451 which is the canister solenoid I replaced it and the problem still persists once the engine warms up and all cylinders fire it never misses a beat and she goes down the road just fine.any idea
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