Fix Of The Week 10/21/19

 

Fix of The Week

Every week we’re posting our favorite head-scratchers and interesting mechanical issues submitted by our Direct-Hit customers.

For a chance to have something you’ve worked on appear as a Fix of the Week, and win a cool little prize for your shop, all you have to do is post your unique fixes in Direct-Hit. Just look up the vehicle you’re working on, click on Post Fix at the top right, then tell us the problem and what you did to fix it.

 

This Week’s Winners

On this edition of Fix of The Week: a knocking noise in a Nissan, an inoperable blower fan in a Kia, and hazard function troubles in a Honda.

 

2014 Nissan Pathfinder – Herndon Reston Transmission

The customer complained of an engine knock noise. After checking for obvious issues like the oil level and pressure, we tried to isolate the noise with a stethoscope. No abnormal engine noise could be detected. The noise was audible with the hood closed, and we could hear it near the driver’s seat floorboard. We moved the scope around and noticed the fuel rail was the source. We tested the fuel pressure which came back with normal readings. We noticed that when we relieved the fuel pressure the noise would go away. We replaced the fuel rail dampers and the problem was resolved.

 

2009 Kia Rondo – Fifth Avenue Auto

The blower fan would only operate properly on the first and second settings. Third and fourth settings would operate the blower like it was still on the first. The resistor block and fan checked fine—the fan draw was 14 amps which is within the 20-amp spec. I pulled the HVAC controls out from the dash and while moving the connector, the blower fan would operate on the third and fourth settings. I removed the connector to find two of the female pins burnt. I pulled them out and replaced them with two new pins—male pins in the control panel were fine. I put dielectric grease in the connector and the fan operates properly now.

 

2002 Honda Accord – Phil’s Pro Auto Service

Both turn signals on this vehicle were operational but the hazard function was inoperable. I inspected the wiring diagram and found all the turn signal functions run through the hazard switch. I removed and disassembled the hazard switch and found excessive carbon deposits on the contacts and pins inside the switch. Only the contacts for the hazard function were affected enough to cease operations, thus the turn function was still OK. I cleaned all the contacts and switch pins with electronics cleaner and a ScotchBrite pad. I reassembled and the issue was resolved, no parts required.

 

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On this edition of Fix of The Week: a knocking noise in a Nissan, an inoperable blower fan in a Kia, and hazard function troubles in a Honda.