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1983 - 2012 Ranger & B-Series All Ford Ranger and Mazda B-Series models

86 2.9 ranger problems

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Old Dec 22, 2011 | 06:42 PM
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86 2.9 ranger problems

hey all,i just picked up a 86 ranger for 500 bucks.truck is in great shape just needed some tlc.got it on the road and i have a problem,every morning after its been sitting all night it only does it.it will drive fine for about 2miles then it will skip if i floor it it will hit on all six but as soon as i left off to cruze it will skip again.if i shut it off and start it up it will be good for another 2miles then do it again.but after about 15 miles it will stop all together and run fine the rest of the day,even if it sits all day.it has new plugs and wires and cap.bad coil? or ignition modual
 
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Old Dec 22, 2011 | 07:16 PM
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The IAB or Idle Air Bypass is whacked. It's supposed to be fully open on cold start and deceleration.

Josh
 
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