Tech Tip: Ford/Lincoln Rear Brake Drag Or Rear Brake Noise
Some 2009-2010 Flex, MKS and 2010 Taurus and MKT may exhibit rear brake drag and/or off-brake cyclic noise. The noise may be caused by pad to piston misalignment or corrosion on the brake caliper bracket. Follow the Service Procedure steps to correct the condition.
Hyundai 1.6-2.4L Tech Tip: Check The Weights On The Shafts Before Installing Belts
The addition of the balance belt won’t cause any problems as long as it’s timed correctly and the counterweights are in the proper position when the belts are installed. There are access holes in the block that allow you to insert a punch or screwdriver to ensure the weights are at the bottom of the shaft, but they are not always necessary.
Tech Tip: Nissan Maxima’s ABS Activates On Normal Braking, ABS Warning Lamp Is On
If you confirm that the ABS light is on with one or more of the following DTCs stored – C1105, C1110, C1124, C1126 – and/or the ABS system activates with normal braking, follow the Service Procedure.
Tech Tip: Nissan Front Brake Caliper Fluid Residue
If you confirm there is oil residue on the brake caliper and it’s not assembly lubricant, refer to the Service Procedure as part of your normal brake diagnostic procedure. Note: Castor oil assembly lubricant is applied to the brake caliper when it’s built and some residue is normal. Do not replace the caliper for castor oil residue.
Tech Tip: 2004-’05 Nissans Have MIL On With DTC P0300-P0306, P1273 Or P1283
Technicians may encounter an MIL “On” with one or more of the following DTCs stored: P0300, P0301, P0302, P0303, P0304, P0305, P0306 (cylinder misfire); or P1273, P1283 (A/F ratio lean). Injector resistance may cause one or more of the listed DTCs to be set. Check the resistance of the injectors against the values in this bulletin.
Tech Tip: BMW Intermittent No-Start Problem With A Dead Battery
Some 2006 BMW vehicle owners may complain that their BMW has an intermittent no-start problem and the battery has gone dead. This may be the result of an incorrect battery or the comfort access module.
Audi Tech Tip: MIL On With P1545, P0121, P0123, P0221 Or P0222 Stored In ECM
The MIL is on, with a number of incident memory entries with regard to the throttle valve are stored in the ECM. In most cases, the entries are sporadic. This may be the result of contact resistance in the ECM wiring – throttle valve.
Tech Tip: Heater Core Leak Repair
A classic sign of a heater core problem is when the inside of the vehicle’s windshield persistently keeps misting. Warm coolant is leaking out of the core into the vents and then condensing against the cooler surface of the windshield.
Tech Tip: Nissan Xterra Hesitates Upon Acceleration
The technician connected a scan tool and found code P0102 – Mass or Volume Air Flow “A” Circuit Low. He then performed an inspection of the mass airflow (MAF) sensor and related wiring harness, but found no obvious faults.
Tech Tip: Clogged Oil Line Leads To Chrysler/Dodge Turbocharger Failure
Extreme temperatures cause the oil circulating through the turbocharger oil feed line to burn. The coked oil buildup restricts oil flow, which leads to turbocharger failure. The oil line may appear fine externally.
Tech Tip: VW’s Check Engine Light Is On With Trouble Code P2187
The check engine light is on, with trouble code P2187, too lean off idle bank 1. Potential causes to consider include: a defective mass air flow (MAF) sensor; leaking engine vacuum; and N80 canister purge solenoid.
Tech Tip: Caliper Replacement Check List
Check vehicle service information for any special procedures for piston retraction, electronic brake assist system deactivation or proportioning/metering valve reset.