Re: 1998 Ford 4.2L V6 idle issue

On 6/19/2025 4:58 PM, UFO wrote:

Just got a 1998 Ford F150 with the V6 / Auto about 100K miles. Not sure when its had a tune up, but occasionally at a light the idle will reduce as if its about to stall, then it recovers.
 Recently I let the vehicle sit a few days without a start and it started up fairly quick, but soon the idle slowed down quite a bit again, nearly stalled.
 Some internet research says it could be an EGR valve and other things like the coil pack module?
 I was gonna try some STP fuel injector cleaner maybe as a start....any good resources out there of this engine?
  

Start at any mechanic or auto parts store to read the codes. Write them down and research solutions (Adjustment? Replacement?)  once you know where the problem lies.
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Andrew Muzi
am@yellowjersey.org
Open every day since 1 April, 1971