Fix of The Week 12/21/18

Fix of the week

 

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 Mazda with flashing headlights, a stalled Kia, and a Nissan with malfunctioning fans.

 

2006 Mazda 3 – Dave Keisters Garage

This vehicle’s headlights would flash and sputter out intermittently. We tested the signal from the headlight switch with the scanner to the junction box and that came back fine. We checked the power coming from the relay to the headlight fuse, which showed loose power at the fuse. We found that the low beam headlight relay, internal in the passenger junction box, would stop working. We changed PJB with a used one and relearned the fobs.

2013 Kia Rio – Pep Boys

This customer had an intermittent stall, then would restart after 10 minutes. This happened 3 times over 200 miles. No codes present. The vehicle was in the shop twice before we could duplicate the customer complaint of stalling. We had a fuel pressure gauge on the inlet to high pressure pump, which was at 68 PSI which is a little low. We ran it for about an hour after a 15-minute drive. Afterward, we shut it off for 10 minutes then went to restart and it wouldn’t start.

It had good fuel pressure, so we ruled that out. The car started after a second try—long crank then it started a little rough and the engine light came on—P0335, finally a code! The CKP signal was erratic so we replaced it and all was fixed.

2016 Nissan Pathfinder – Elec-Tech Automotive Repair

This customer’s electric cooling fans would come on high speed when the ignition was in the on position or running. We removed the purple wire from IPDM module and connector E218 (pin 93). We were able to tap this wire to ground acting as the pulse width to the fan control module and determined the fan and fan control module were not the problem based on the fact that we could control the fan speed by tapping this purple wire to ground.

We removed the fuses on the IPDM module and separated the black plastic in half. We were able to see the failed component (looking very closely) on the IPDM main circuit board. Replaced IPDM module and the fans no longer came on full blast.

 

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