Yamaha F150 idle screws

[Obsidian]

I am told this engine's idle speed is determined by the ECU, but there are two screws on the air intake manifold and they seem to adjust tick over. Does anyone have any experience of these?

[enzo200500]

Obsidan, I have a 2012 F150, so not sure if the procedures are the same?

The TPS needs to be outputting a voltage of 0.7 +/- 0.02v with the throttle butterflies fully closed. Tickover screw wound out fully.

The setup procedure is in the Service Manual, as its a bit long winded to type out here!

[enzo200500]

On mine, one screw does tickover, the other balances the Throttle Bodies between #1 #2 and #3 #4 cylinders.

[Obsidian]

Awesome, thank you. Any chance of a link? Have looked at manuals online and cant see this bit. Thanks again

[enzo200500]

Its in my manual on page 4-18.

I’ll see if I can get link to download manuals?

[enzo200500]

This is for my engine, but you may find one for your year?

https://www.manualslib.com/manual/95...aha-F150a.html

[Obsidian]

Thank you Enzo, thats great. Not the manual I was looking at

[enzo200500]

Shame yours is not the same year, I could have taken readings from my engine!