Fix of The Week 9/6/19
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 hard shifting in a Toyota, a passenger seat sensor in a Subaru, and popping noises in a Chevy.
2001 Toyota Highlander – Meineke Car Care Center #121
The vehicle was driving with a hard stumble on 1-2 and 2-3 shifts after the intake manifold was removed to replace the knock sensors. On cool to warm startups, the engine misfired on cylinders 2, 4, and 6 for approximately 20 seconds, but would still hard shift.
I unplugged bank 2 air/fuel sensor and the stumble was gone but still hard shifted. I found a buried and disconnected ground wire on the back of the intake manifold passenger side, so I connected the ground and car is now perfect, thanks to James Leach from Keliher Auto Sales. Grounds are extremely important on this engine!
2017 Subaru Forester – 15th Street Automotive
The vehicle came in with code B1650 – occupancy detection system malfunction. I tested fuse 25 in F/B and checked all the connectors under the passenger seat. Next, I checked the passenger seat belt buckle. The passenger seat had a thick wool seat cover that was damp; I removed the seat cover and the seat cushion was damp. I dried out the seat cushion and cleared the code. If the code doesn’t clear after drying, then replace the seat cushion/occupancy detection sensor. I informed the customer to remove the aftermarket seat cushions.
2015 Chevy Tahoe – David Bean
The Tahoe came in with code P219B and the customer was complaining of a popping noise from under the hood. We detected the noise coming from the right side of the engine—sounded like a loose spark plug and I could smell exhaust gasses. The live misfire data would just for a split-second show 2 misfires on cylinder #6, then clear. With the engine running, the noise was under the intake manifold on the passenger side.
I removed the intake and noticed the #6 injector was discolored, so I removed bank 2 injector rail and found the #6 injector gaskets were missing. Next, I cleaned the head with a pipe cleaner and cleaned the injector with throttle body cleaner. I replaced bank 2 injector seals and O-rings and intake grommets. If possible, get the tool to install the seals—it makes it much easier to avoid damaging the new seals. You might just replace the injector, to cover all bases.