[mr2tim]

Sounds like our friend from Utah has the right idea with the fuel delivery mal-function.?

After my 3rd Fuel pump replacement (3 mr's) I discovered that there is several "stages*" of fuel pump output, from just barely running (your problem?) to WOT where the output* is boosted electronically by the ECU with the help of the AFM.

Page FL-118 of the 89 Manual shows the circuitryfor the "High Temperarture Line Pressure Up System". You'll note that the Fuel Pressure VSV (regulated by the EFI Main Relay) and the Water Temp Sensor (tied into the Air Temp Sensor circuit in the AFM) all have imput to the ECU for this to happen..

Additionally, there is a Fuel Pump Switch (fc)-green/red in the AFM. The connection to the Fuel Pump wire is the (Fp) location on the AFM.

The black smoke could be? that hopped up Fuel Pump whose output is no doubt well atop the OEM output?

THE vS-e2? (anomaly)
e2 is a Brn ground wire,
the Vs (yellow-blue) is the power side of the AFM rheostat.
If this power side of the switch (rheostat) is out of "spec" then the base line for power coming into the switch is questionable for sure?

I've recently learned to photograph my "OEM Service Manual" so if any of the above need clarification drop me a line and I'll copy ya'll.

I seriously doubt that your Rev Limiter (Toyota=Fuel Cut Rpm) is involved (Page FL-128) unless you run out of other tests?


Patience bro, you got it runnin'--
grab that multi-meter and duck when the Hurricane goes over..

Supercharzed Toyz
A Toyota Race Team