Line Pressure/EPC Pressure Test

LINE PRESSURE TEST

CAUTION: Perform the line pressure test prior to the stall speed test. If line pressure is low at stall, do not perform stall speed test, as transmission damage will occur. Do not allow engine to run at Wide Open Throttle (WOT) for more than 5 seconds.

Line Pressure Tap:

1. Connect pressure gauge to line pressure tap.
2. Start engine and observe gauge.

Line Pressure Chart:

3. Refer to the Line Pressure Chart image for pressure range.
4. If line pressure is low, remove gauge and connect to the Electronic Pressure Control (EPC) pressure tap.
5. Start engine, observe gauge, and refer to the Line Pressure Chart.
6. If the EPC pressure is low, perform the Electronic Pressure Control Solenoid Test.