1986 Ford Thunderbird High Idle

140,000 MILES • V8 • 2WD • AUTOMATIC
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THRASH_1818
  • MEMBER
  • 1 POST
This car has me, my father, my grandfather, and my father-in-law stumped! It's my girlfriends car. Last summer she drove it home from work and it was fine, next morning started it and it started idleing like a raped ape, around 3500 RPM. Replaced idle Air Control Valve, EGR Valve, Oxygen Sensor, Sparkplugs, Wires, Distributor Cap, Rotor, EMS Relay or whatever and got nothing. So I was told to take a can of carb cleaner, star it and start spraying all of the major intake gaskets to see if one of them got sucked in, tried it and got nothing. Next thing to do is spend $150 and go get a new computer. What do you think.

[img:d2aa08c714]http://www.2carpros.com/forum/automotive_pictures/182017_courtno2_1.jpg[/img:d2aa08c714]
Apr 22, 2008 at 8:08 PM
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SERVICE WRITER
  • ✓Experienced Mechanic
  • 9,123 POSTS
Check your throttle position sensor.
Unplug it and see if the idle drops.
Apr 22, 2008 at 10:33 PM
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