power453c

I have an 1986 f150 that is having trouble idleing. If I don't put my foot on the accelerator within about 30 seconds it will die. Also the other day I had to hit my brakes harder than usual. This did not allow the transmission to shift gears and It died. As Long as I have it in gear it will usually hold itself at around 400-600 RPMsonce it gets warmed up. This machine has throttle body injection. and a 302 cu in. 3 speed automatic with overdrive. Can any body tell me where to start looking to fix this problem.

wrench_head_77

Sounds like the same problem that I'm having.

Even after the truck is warm, it still seems to idle too slowly.

See "87 F-150 EFI idles erratically" on this forum.

Maybe we'll get a reply soon.

w_h_77

wrench_head_77

I changed the EGR valve. No help.

After consulting a ford owner friend, he suggested replacing the Idle Air Control Valve--also called the Idle Bypass valve.
The Haynes manual shows how to test it with an ohm meter.

Eureka. It is fixed.

Part costs about $65.

W_H_77