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Solving Carbon Deposits In Direct Fuel Injection Engines

Symptom: Misfire codes, stumbling and suspicious fuel trim numbers. On a scan tool, the engine may show a loss in volumetric efficiency. The driver may complain about a loss of power, poor fuel economy and hard starts. Cause: Carbon deposits on...

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What to Know About Modern Air Ride Systems

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Slipping Clutch: Improper Flywheel Step and Cup Dimensions

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Parking Brake Adjustments

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Vehicle Unit Increase; Import-Rich VIO Are A Boon for Import Specialists

Need a dose of good news for your business? Then hear this: The influx of new vehicles in the market will lay the foundation for bountiful aftermarket service and repair opportunities. And, with import vehicle sales continuing an ­upward climb, there...

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Honda: Engine Shuts Off, But Power Mode Stays In ‘On’ or ‘Accessory’

Applies To: Honda Insight models with one-push start Customers might complain that when they shift into park and shut off the engine, that the power mode stays in On or Accessory. Honda says the culprit could be a misadjusted shift cable. If the...

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Import Oil Specification Primer

As engine technology has evolved and fuel efficiency standards have tightened, oil specs have increased in importance. Using the wrong viscosity could set a fault code in some applications or interfere with the normal operation of the variable valve...

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2015 Vehicle Lifting Points Guide Now Available

The Automotive Lift Institute, Inc. (ALI) announces the availability of the 2015 edition of ALI’s “Vehicle Lifting Points for Frame Engaging Lifts.” This updated guide is a quick-reference single-source manual for lifting point information as...

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Pulling Codes: P0302: Cylinder 2 Misfire Detected Intermittent Activity

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Registration Now Open For ToolTech 2015

The Equipment & Tool Institute (ETI) is hosting its ToolTech 2015 event April 13-16 at the Radisson Hotel and Suites in Downtown Austin, Texas. This year's theme is "The Connected Vehicle: Opportunities and Challenges." Information and technology...

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Applications
Ford: 1990-1994 Tempo, 1990-1997 Escort, Probe, Thunderbird, 1990-1998 Mustang, 1990-1999 Taurus, 1990-2002 Crown Victoria, 1997-1999 Contour, 2001 Taurus, 1990 Bronco II, 1990-1996 Bronco, 1990-1997 Aerostar, F Super Duty, F-250 HD, F-350, 1990-1999 F-250 Ltd, 1990-2002 Econoline, F-150, Ranger 1991-2002 Explorer, 1995-2002 Windstar, 1997-2003 Expedition, 1999-2002 Super Duty F Series, 2000-2002 Excursion, Explorer Sport Trac, Explorer Sport, 2001-2002 Escape.

Lincoln: 1990-1992 Mark VII, 1990-1994 Continental, 1990-2002 Town Car, 1998-2003 Navigator, 2002 Blackwood.

Mercury: 1990-1994 Topaz, 1990-1997 Cougar, 1990-1999 Sable, 1990-2002 Grand Marquis, 1991-1997 Tracer, 1997-1999 Mystique, 2001 Sable, 1993-2002 Villager, 1997-2002 Mountaineer.

Problem
After replacing the alternator, a hum, whine or buzzing noise is heard through the speakers of the vehicle radio or two-way radio when the fuel pump runs.

Cause
The in-tank electric fuel pump may be the cause of the electrical noise. In August of 2002, Ford Motor issued TSB 02-16-4 addressing this issue.

Solution
The following procedure will help determine if the fuel pump is the cause of the radio noise (refer to TSB 02-16-4 for complete details):

1. Turn the ignition key to the "Accessory" position (not Start).

2. Turn on your radio.

3. Now turn the ignition key to the "Run" position (do not start the engine).

4. Let the fuel pump run about one second with the key in the "Run" position (engine off).

5. Listen for noise in the radio. If noise is present while the pump is running and stops when the pump stops, then the fuel pump is generating the noise.

Note: If the radio noise is fairly constant, or varies with the vehicle speed, this fix does not apply.

Notes
TSB 02-16-4: Installation of the electronic noise Radio Frequency Interference (RFI) Filter (F1PZ-18B925-A) on the fuel pump inside the fuel tank requires a bundling strap (95873-S101) and heat-shrink tubing (F5AZ-14A099-AA). This is repair should be done by a service professional.

Warning: If your vehicle has an electronic return-less fuel system, do not install a RFI filter inline on the fuel pump. Only vehicles with mechanical return-less fuel systems (pressure regulator in the tank), or systems with the pressure regulator on the fuel rail should be approved for the RFI filter installation. Some light trucks require one (1) RFI filter for each in-tank electric fuel pump on multi-tank vehicles. This instruction does not include 1999 Taurus or Ranger flexible fuel vehicles.

Note: This bulletin is supplied as technical information only and is not an authorization for repair.

Tech Tip courtesy of CARDONE.

For additional information on products offered by CARDONE, visit www.cardone.com.

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Solving Carbon Deposits In Direct Fuel Injection Engines

Symptom: Misfire codes, stumbling and suspicious fuel trim numbers. On a scan tool, the engine may show a loss in volumetric efficiency. The driver may complain about a loss of power, poor fuel economy...More

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Technicians and customers have pretty much accepted that the accessory serpentine drive belt should be replaced between 90,000 to 100,000 miles. It is a “slam dunk” sale to just replace the belt,...More

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