c/auto-mechanics

1

jenniferb53•1d ago

Pro tip: I changed how I clean throttle bodies after a messy job in Cincinnati

I used to just spray cleaner directly into the bore and wipe it out, which left a huge mess of black gunk on the shop floor. After a particularly bad one on a 2005 Civic last fall, I started putting a clean shop rag underneath the throttle body opening before spraying. The rag catches all the runoff, so you just ball it up and toss it. It saves about 15 minutes of cleanup time per car. Anyone have a better trick for keeping the intake area clean during this job?

11

adam_hernandez•1d ago

I finally spoke up about the 'always replace both sides' brake job rule at our shop meeting in Tacoma

We had a customer with a 2017 Civic who only needed one caliper, and the other side was under 6 months old. I argued we should just do the one, saving them $300, but the lead tech said it was a liability issue. I showed them the service history and the wear measurements, and we ended up doing just the single side. Has anyone else pushed back on this rule when the evidence is clear?

20

kais67•2d ago

Question about a 2014 Ford Escape that kept blowing the same fuse

Had this car come into the bay about two months ago, a 2014 Escape with the 1.6L. The owner said the radio and power windows would just die randomly. Checked it, and sure enough, a 20-amp fuse in the passenger footwell box was blown. Replaced it, and it blew again before the customer even left the lot. Spent the next three hours with a test light, chasing wires. Finally found the problem... the harness running into the driver's door had a rub-through spot right where it flexes. The insulation was worn down to bare copper, shorting against the door frame every time the door opened. It was such a tiny spot, easy to miss. Has anyone else run into this on that generation Escape? What's your go-to fix for a door harness repair like that?

1

jade738•2d ago

A customer's old trick for stuck caliper bolts actually worked

An older guy at our shop in Phoenix kept telling me to soak frozen caliper bolts in automatic transmission fluid instead of penetrating oil. I thought it was just garage talk until a 2008 Silverado with seized rear bolts wouldn't budge after two days of PB Blaster. I gave his method a shot, left it overnight, and they came loose with a regular ratchet the next morning. Has anyone else found an odd fluid that works better than the usual stuff for specific jobs?

26

amybarnes•2d ago

Rant: A 2006 Ford Escape blend door actuator took me three hours

Had a customer come in with a weird clicking noise behind the dash on a cold start. I figured it was the usual blend door actuator, a one hour job. The whole dash had to come out because the mounting bracket was rusted solid. Ended up using a torch and a ton of penetrating oil. Anyone else run into these being way worse than they look?

17

jessica_miller•4d ago

Warning: The new 'universal' O2 sensor socket from Harbor Freight is a total waste of $22

Bought it for a job on a 2012 Ford Escape, and the walls were so thick it wouldn't fit into the tight space around the sensor. Ended up rounding off the sensor and had to cut the whole thing out, which cost me an extra hour and a new sensor. Has anyone found a decent thin-wall sensor socket that actually works?

7

mason847•4d ago

PSA: The junkyard in Dayton had a ton of clean 4.0L Jeeps last Tuesday

Honestly, I was pulling a power steering pump for a buddy's Cherokee and noticed at least eight XJs with the 4.0 still in them. Most looked like they were there for body damage, so the motors are probably solid. If you need a cheap long block or just some sensors, it's worth a look before they get crushed. Anyone know a good way to test compression on a motor that's already sitting in a yard?

6

ericgonzalez•5d ago

My uncle told me to never trust a 'quick fix' on a coolant leak

He was a mechanic for over forty years in Detroit, and he always said if you see a stop-leak bottle in the system, plan on doing a full flush and finding the real problem. I brushed it off when a customer came in with a small leak and a bottle of that stuff already in there. I topped it up and sent them on their way. Sure enough, they were back two weeks later with the heater core completely clogged. The stop-leak had sealed the tiny leak but then traveled and gummed up the whole small passageway. It turned a fifty dollar hose job into a six hundred dollar dash pull. Now I check for it on every used car that comes in. Has anyone else had a simple additive cause a much bigger headache down the line?

2

paul_owens25•6d ago

Serious question, has anyone else had a customer's weird noise lead them to a totally different problem?

I was working on a 2015 Civic in the shop last Tuesday, and the owner came in saying he had a grinding sound from the front right wheel. He was sure it was a bad wheel bearing. I put it on the lift, spun the wheel, and heard nothing. Took it for a quick drive around the block and sure enough, a nasty grind on light turns. I came back, checked the bearing again, and it felt fine. On a hunch, I pulled the wheel and looked at the brake shield. It was bent in just enough that the very edge was kissing the back of the rotor on turns. A five minute bend-back with some pliers fixed it. The guy was happy, but I felt like I almost wasted an hour chasing his guess. How often do you find the real issue is something simple the customer would never think of?

21

mason728•6d ago

A trick for stuck brake bleeder valves that actually worked for me

Had a 2007 Silverado come in yesterday with a rear caliper that wouldn't bleed. The bleeder valve was completely seized, and I was about to just replace the whole caliper. Before I did, I remembered an old timer telling me to heat the caliper body around the valve, not the valve itself, and then tap it with a hammer while it's hot. I used my propane torch for about 30 seconds on the metal right next to the valve, gave it a few light taps with a small ball-peen, and it broke free without snapping. Saved the customer the cost of a new caliper and me a bunch of time. Has anyone else had luck with this method, or do you have a different go-to for frozen bleeders?

18

harper_owens•7d ago

Unpopular opinion: I used to think a 10mm socket was just a meme until I lost three of them in a single engine bay on a 2018 F-150.

I finally realized it's not a joke but a real design flaw when the socket's shallow grip and the bolt's recessed placement on that specific model make it a perfect recipe for a $15 tool to vanish into thin air, so has anyone found a specific brand or magnetic holder that actually keeps them secure?

16

hannahcoleman•7d ago

Shoutout to the old timer who showed me a trick with a zip tie and a vacuum line

Honestly, I was chasing a rough idle on a 2012 Civic for like two hours yesterday, checking all the usual stuff. Ngl, this retired mechanic at the parts counter said to use a zip tie to pinch the PCV hose shut for a second while it was running, and the idle smoothed right out, pointing straight to a bad valve. Has anyone else used that trick to find a vacuum leak fast?

8

james_ramirez•8d ago

Showerthought: I always thought the 10mm socket joke was just a meme

I read a survey in a trade magazine that said 72% of mechanics list it as their most commonly lost tool. Anyone else actually track how many you go through in a year?

6

oliviahenderson•9d ago

Rant: My apprentice said my old timing light was 'vintage' and it made me think.

He called it a museum piece while we were setting base timing on a '92 F-150, and honestly, it still works perfectly. Am I just being stubborn, or is there still a real place for analog tools in a shop full of scan tools?

2

blair_hill59•9d ago

Just hit 500 oil changes on my own personal log

I was cleaning out my toolbox drawer last week and found my old notebook from when I started at the shop. I flipped through it and realized I've logged every single oil change I've done since day one. The count was at 499, and the very next car I did yesterday pushed it over. It's a weird milestone that hit me harder than I thought it would. Has anyone else kept a weird personal tally like that, or am I just nuts?

27

the_pat•12d ago

A chat with a retired tech made me stop using my old scan tool

He said 'that thing can't see half the network faults on a 2016 or newer car, you're just guessing.' I realized I've been wasting time on diag for months. Anyone else find their gear just got too old too fast?

20

troyh55•12d ago

Had a weird coolant leak on a Ford 5.4L that I chased for a week

I mean, I kept looking for a head gasket or a cracked block, but it was just a tiny split in the plastic coolant crossover pipe under the intake. The customer mentioned the temp gauge would spike for a second then drop, which was the clue. Anyone else seen this specific failure before?

29

lily_dixon27•13d ago

Can we talk about mechanics not checking the torque converter bolts on a 4L60E rebuild before dropping the trans back in?

I've seen three shops in town skip this step, and it always leads to a comeback for a vibration at 45 mph.

21

uma_nguyen24•13d ago

Showerthought: I heard a tech at the dealership say 'just replace the whole assembly' for a simple window regulator clip.

That mindset of swapping entire units instead of diagnosing the $5 broken part is what's killing real troubleshooting skills in our trade, so has anyone else seen this lazy approach become the norm lately?

15

spencer_hayes71•13d ago

PSA: I swapped the coolant on my '06 Silverado after 5 years and the temp gauge dropped 15 degrees at idle.

The old stuff was basically brown sludge and couldn't transfer heat. Anyone else see a huge difference after finally doing a flush they kept putting off?

5

christopher402•14d ago

Spent $150 on a bore scope for a stuck lifter job and it paid for itself in an hour.

I could see the exact rocker arm position without pulling the whole valve cover. Has anyone else found a cheap tool that saved a ton of time?

20

christopher_roberts29•15d ago

Remember when you could actually see the engine bay in a car?

I was working on a 2002 Silverado yesterday and then a 2023 model today. The difference is crazy. The older one, you just pop the hood and everything is right there. The new one, it's all covered in plastic panels and shrouds. You have to remove like three pieces just to check the oil dipstick. It feels like they're designing them to keep us out. Anyone else miss the simple layouts?

19

rosel50•15d ago

Had a customer bring in a 2003 Civic with a misfire that turned into a full engine teardown

It was supposed to be a simple plug and wire job, but we found metal shavings in the oil pan. Anyone ever had a routine fix spiral like that?

8

ericnguyen•17d ago

Overheard a guy at the parts counter arguing his car needed a new alternator because his battery kept dying

He was convinced after watching a YouTube video, but the counter guy asked if he'd checked for a parasitic draw first. Tbh, it made me realize how often we jump to the expensive fix without doing the basic checks. What's the most common misdiagnosis you see customers bring in?

6

brian45•18d ago

A customer in my shop last week asked me to fix his 'loud engine' and handed me a bag of loose bolts from his trunk.

He said he found them rolling around after his friend 'helped' with a timing belt job, and now I'm wondering what's the weirdest collection of parts someone has ever brought you for a diagnosis.