Topaz L4-140 2.3L CFI (1985)
Figure 11 - Wiring Diagram
g.
Locate the fuel pump relay (behind the glove box) and remove and replace it with the modified relay (Fig. 10). The ground lead should be
brought outside the vehicle and located nearby.
h.
Energize the fuel pump (ground the ground lead from the relay) for 10 seconds. Observe pressure while energized. If there is no pressure,
monitor the voltage past the inertia switch to determine whether the pump is gening the proper voltage. Correct any faults as necessary.
i.
The fuel pump is operating properly if:
^
The fuel pump pressure reaches 90-110 kPa (13-16 psi) and:
^
The fuel flow is a minimum of 178 ml. (6 ounces) in ten seconds, and:
^
Fuel pressure remains at a minimum of 80 kPa (11.6 psi) immediately after shutdown.
j.
If all three conditions are met, the fuel pump is operating properly. Check for engine and electrical problems.
k.
If pressure condition is met, but flow is not, check for blocked filters and fuel supply lines. After correcting any blockages, recheck. If flow
conditions are still not met, replace fuel pump sender assembly.
l.
If both pressure and flow conditions are met, but pressure will not maintain after de-energization, check for leaking injectors or regulator. If
both check OK, replace fuel pump-sender assembly.
m.
If no flow or pressure is seen, the fuel system should be rechecked as in step k. If no trouble is found, remove the fuel tank and replace the
fuel pump-sender assembly.
n.
After the procedure is complete, replace the modified fuel pump relay with the original relay.
OTHER APPLICABLE ARTICLES: None
WARRANTY STATUS: Reimbursable within the provisions of the Warranty and Policy Manual.
OPERATION: 9350BE
TIME:
0.5 Hr. DLR. CODING: Basic Part No. 9350 - Code 09
