2.9L & 3.0L V6 Tech General discussion of 2.9L and 3.0L V6 Ford Ranger engines.

Missing on cold start

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Old Jan 25, 2010
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stng_96's Avatar
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From: Rolla Missouri
Missing on cold start

Hey guys, the past few days my ranger has started missing on cold starts. Not that it has been extremely cold, even on one day in was 45 over night it did it. Now, it only does it for about 20 seconds, then goes away, and runs great. I have recently put new plugs and wires in it, and it ran great for a month, but that was still the first thing I checked, and all seems to be good. Any suggestions?
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Old Jan 25, 2010
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Do you think the throttle plate might be sticking? The same thing is was happening on my 2.3
 
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Old Jan 25, 2010
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Throttle plate? you mean like inside the throttle body? Would that cause it to miss?
 
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Old Jan 26, 2010
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If it is sticking shut and starving for air......
 
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Old Jan 26, 2010
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I'm gonna take a stab in the dark and say it sounds like a hydraulic lifter is taking a while to pump up ,not letting a valve open enough right away.
A poor anti-drainback valve in the oil filter or too heavy oil weight would amplify the problem.
Open the hood before the next cold start and listen for a "clatter" sound.
 
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Old Jan 27, 2010
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From: Woodbridge, VA
Originally Posted by stng_96
Throttle plate? you mean like inside the throttle body? Would that cause it to miss?
na.... it would just cause it to run like a turd with arms... :D
 
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