fuel pressure regulator
- Thread starter fbryant
- Start date
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- Jun 28, 2004
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You have a few post basically concerning the same thing... anyways.. here is the location of the regulator look at number 3 in the pic. But the odds are this is not your issue.
This might be though:
Idle Air Control (IAC) valve - up to 99MY
The idle speed control stepper motor is located on the
side of the inlet manifold. Idle speed is controlled by
the stepper motor, which comprises two coils,
mounted to the throttle housing. When energised in
the correct sequence, the coils move a plunger which
opens or closes the throttle bypass valve controlling
the quantity of idle air. The stepper motor controls idle
speed by moving the plunger a set distance called a
step. Fully open is 200 steps (180 steps for vehicles
up to 97MY) and fully closed 0 steps. Failure of the
stepper motor will result in low or high idle speed,
poor idle, engine stall or non start. If the number of
recorded steps changes beyond a set threshold
(opening or closing) without a corresponding change
in airflow, then a fault code will be stored. The GEMS
diagnostics also check for short circuit conditions
during normal stepper operation and open circuit
during power down. Detected faults are indicated by
illumination of the malfunction indicator light (MIL) on
North American specification vehicles.
The stepper motor coil resistance is 53 ohms ± 2
ohms.
This might be though:
Idle Air Control (IAC) valve - up to 99MY
The idle speed control stepper motor is located on the
side of the inlet manifold. Idle speed is controlled by
the stepper motor, which comprises two coils,
mounted to the throttle housing. When energised in
the correct sequence, the coils move a plunger which
opens or closes the throttle bypass valve controlling
the quantity of idle air. The stepper motor controls idle
speed by moving the plunger a set distance called a
step. Fully open is 200 steps (180 steps for vehicles
up to 97MY) and fully closed 0 steps. Failure of the
stepper motor will result in low or high idle speed,
poor idle, engine stall or non start. If the number of
recorded steps changes beyond a set threshold
(opening or closing) without a corresponding change
in airflow, then a fault code will be stored. The GEMS
diagnostics also check for short circuit conditions
during normal stepper operation and open circuit
during power down. Detected faults are indicated by
illumination of the malfunction indicator light (MIL) on
North American specification vehicles.
The stepper motor coil resistance is 53 ohms ± 2
ohms.
