The fuel level sensor may fail resulting in erratic reading of the fuel gauge. Sensor replacement is generally required to correct this concern.
Isuzu Ascender Problem Reports
Most Reported Isuzu Ascender Problem Reports
The transmission may develop a harsh shift condition with the Check Engine Light on and fault code P0717 stored. This is commonly cased by a failed input speed sensor (ISS), located inside the transmission. The wiring at the sensor may be found damaged. If so, the sharp edges near with ISS wiring should be filed smooth to protect the new speed sensor wiring from damage.
A no crank condition may occur and the IGN E fuse is blown. If this occurs our technicians recommended 3 places to inspect for wiring issues: Under the sill place at the drivers side rear door opening, along the steering column, and near the brake pedal bracket. Damaged wires will require repair and should be repositioned and protected from further damage.
The horn may not function at times due to a faulty ground circuit in the steering column. Our technicians tell us that adding a ground strap between the upper and lower steering column mounting points will commonly correct this issue.
A squeak noise may be noted upon brake apply. If basic brake inspection procedures don't reveal any faults, our technicians recommend flushing the DOT 3 brake fluid and replacing it with Delco Supreme 11 fluid to correct this concern.
A no start condition may be caused by a failed ignition lock cylinder (the ignition key will not turn). If this occurs the ignition lock cylinder will require replacement.
The 4WD warning message may be displayed with a code C0327. The transfer case position sensor is commonly at fault and will require replacement.
The Check Engine Light may illuminate with codes P0171 and P0172 stored. Our technicians tell us reprogramming the powertrain control module (PCM) and replacing the fuel pump may be necessary to correct this concern.
A high pitched squeak type noise may be noted from the front axle area. This is commonly caused by a dry axle shaft seal. Grease can be applied to the outside edge of the seal in an attempted to correct the concern. If no change is noted or the noise returns the affected seal should be replaced.
The ignition switch may fail resulting in a no start condition. Replacement of the failed switch is necessary to correct this condition.
The Check Engine Light may illuminate due to a failure of the secondary air injection system (AIR) system. Possible faults include the air pump, relay, solenoid, and 02 sensor. Our technicians recommend complete system diagnoses before replacing any parts.
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