Idle Adjustment on 2nd Gen (1994)? Chilton says cannot adjust - computer controlled.

[twogiraffe]

2nd Gen 1994 4Runner. V6. 5-sp. 150k miles.

Once it's warmed up, the idle is rough and low.
Idling is at 500 RPM. It often dips down, and surges back to 500, and dips again a couple times, and stalls.

Starts right back up, but same problem just persists the next time I come to a red light. No problem while driving, even at 1000 rpm slow cruise, it runs just fine.

I've changed fuel filter. Problem still there.
I've used fuel injector cleaner. Problem still there.

Now I think it's just because the idle is low.
But the Chilton manual says the idling on the 94 is computer controlled and cannot be adjusted. Is this true?

I read on another post about adjusting idle on a 95.
I'm confused. Can I really adjust idle on the 94 V6???

If so, anyone have a picture of where the screw is?
I know where the throttle control is. But where is the idle screw on a 94?

Please advise.
Thanks

 

[Gtrain]

I am having the same problem, the truck will start and drop to 250rpm and then stall. It's been happening quite often now. The battery meter drops lower too and all the interior lights dim. When I'm driving I don't have this issue, only when the truck is idled. Does anyone have any input on this? Thanks

 

[poorboyracing]

Everybody is having the same problem, but no one is posting up the solution or any at all! LoL

 

[Culpeper]

Run the motor at 2500 rpm for a couple of minutes. Get a screwdriver and adjust the air/fuel mixture screw counterclockwise to get rpm up to about 800rpm. It may still resort back to a 500 rpm idle but it will at least have descent air/fuel mixture. The screw is easily visible to the left of the throttle control cable on the motor.

 

[poorboyracing]

Fixed, it was the clogged fuel filter

 

[Culpeper]

Fixed, it was the clogged fuel filter

Thanks for posting that. I probably need to change mine. I've never done it. Then I will probably have to adjust the screw clockwise this time