Avenger & Sebring Coupe

NOTE: On Avenger or Sebring Coupe, if fuel pressure is not present or fuel pump is inoperative, perform appropriate test. See TEST NTC-1: NO TROUBLE CODE TEST MENU under DIAGNOSTIC TESTS in SELF-DIAGNOSTICS - AVENGER & SEBRING COUPE article.

CAUTION: Use caution when removing fuel plate from fuel rail as residual fuel pressure may be released.

Release fuel pressure, see AVENGER & SEBRING COUPE under FUEL PRESSURE RELEASE (V6 ). Remove 2 bolts retaining fuel plate and remove from fuel rail. Attach fuel pressure gauge with Hose Adapter (MD998742) and Adapter Hose (MD998709 ). Install fuel pressure gauge, hose and adapter between fuel rail and fuel plate.
Using scan tool, select "Fuel System Test" to operate fuel pump. Ensure fuel does not leak from connections at fuel pressure gauge, hose and hose adapter. Start engine and allow to idle. Fuel pressure should be 47-50 psi. (3.3-3.5 kg/cm² ). Raise engine RPM several times. Ensure fuel pressure at idle does not drop.
If fuel pressure is within specification, go to next step. If fuel pressure is low, drops after raising RPM or no fuel pressure is present in fuel return hose, check for clogged fuel filter, fuel leaking to return side due to poor fuel regulator valve or weak spring (faulty fuel regulator), or low fuel pump delivery pressure (faulty fuel pump). Repair as necessary, then go to next step.
Turn ignition switch to OFF position and observe fuel pressure gauge reading. Wait 2 minutes. Fuel pressure should not drop. If fuel pressure does not drop, system is okay. If fuel pressure drops gradually after engine is stopped, check for leaky fuel injector or leaky fuel regulator valve seat. If fuel pressure drops quickly immediately after engine is stopped, check for valve in fuel pump being held open. Repair as necessary.