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All winter truck runs great

Tiny
THOSZY123
  • MEMBER
  • 2000 FORD F-350
  • 98,000 MILES
All winter truck runs great. Soon as the hot weather arrives [ the hotter the more frequent ], the truck will hold at a steady high idle sometimes cruising at 35 mph or above as if I had cruise control [I don't ]. No check engine light, iac changed twice. Each time it was changed it seemed fine for about 2 weeks. Pvc valve chanced and some vacuum hoses also. Want to be ready for this summer. Any suggestions?
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Sunday, January 27th, 2013 AT 9:36 PM

1 Reply

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Have you inspected the throttle body? It is effected by temp. The throttle plate builds up with carbon and will hang up at times. Use carb cleaner on a rag and clean it real well, inside and out.

Roy
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Sunday, January 27th, 2013 AT 9:51 PM

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