Hesitation / Bucking / Stumbling 1989 FJ62 3FE

[jesus888]

We checked and cleaned all of the sensors on the thermostat housing when we changed the thermostat this week, but in general, since I replaced the AFM, the stumble hasn’t appeared

 

[jesus888]

Update: 400+ mile weekend, even hit 82 mph and she didn’t miss a beat.

 

[60Works]

Fuel
Air
Spark

Any dizzy work? New coil? Connections to and from?

Sometimes new parts are inop, especially non-OEM.

 

[FJ Silver]

Fuel
Air
Spark

Any dizzy work? New coil? Connections to and from?

Sometimes new parts are inop, especially non-OEM.

He replaced the AFM and that solved his stumbling.

 

[jesus888]

He replaced the AFM and that solved his stumbling.

That's right. The cap/rotor/plugs are all new, but the stumbling only stopped after replacing the AFM with a unit we grabbed from a 1995/96 V6 Toyota Camry