1988 Ford F-150 drivability

Tiny
BRADGAGLIARDI
  • MEMBER
  • 1988 FORD F-150
Engine Performance problem
1988 Ford F-150 6 cyl Two Wheel Drive Manual

i recently changed my IAC valve and now my truck wont stay running! Then I put the old one back on and the truck runs like before.(Low idle) is there something else wrong and what should I be checking? Please help I am stumped.
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Wednesday, November 3rd, 2010 AT 4:38 PM

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Tiny
BILLYMAC
  • MECHANIC
  • 2,204 POSTS
Shut the truck off and on a cpl times hold idle about 2000 rpms for 30 seconds or so. Then drive the truck a cpl miles going from 20 to 40 mph. The pcm has to recognise a new sensor.
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Wednesday, November 3rd, 2010 AT 5:39 PM

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