c/auto-mechanics

I used to think those cheap scan tools from the parts store were a total waste of money.

My neighbor, who works on semis, saw me struggling with a check engine light on my personal truck and said, 'Man, that $80 basic reader can at least point you at the system, saves you an hour of guesswork.' I borrowed his and it gave me the P0302 code, which led me straight to a bad coil pack. What's the cheapest tool you've bought that actually saved your butt on a job?

Finally got a customer to understand why you can't just top off their transmission fluid after a 90k mile flush.

I explained that the old fluid had worn-out friction modifiers (which is why the pan magnet looked like a fuzzy caterpillar) and adding new fluid to that sludge would just make the new stuff fail faster, so has anyone else found a good way to explain this without sounding like you're just upselling?

Overheard a guy at the parts counter say he'd never check his own brake fluid

Honestly, I was grabbing a set of plugs yesterday and the guy next to me was telling the clerk his car felt 'spongy'. The clerk asked when he last checked his brake fluid and the guy just laughed and said 'Never, that's what I pay you guys for.' Ngl, it stuck with me the whole drive back to the shop. It's not even a hard check, just pop the hood and look at the little clear reservoir. But it made me realize a lot of people see their car as this magic box they can't touch. They'll pay for a full brake job before they'll spend two minutes looking at the fluid level. I get that not everyone wants to get their hands dirty, but basic stuff like that can save them a ton of cash and catch small problems before they get big. Has anyone else had a customer come in with a major issue that started from them just never checking the simple things?

Pro tip: I used to laugh at the idea of a $200 torque wrench. Now I own two.

For years I thought my clicker from the parts store was good enough, and that the fancy digital ones were just a gimmick. Then I did a head gasket on a 5.3 Vortec and torqued everything down perfectly, only to have it weep coolant after a week. A buddy let me borrow his digital Snap-on wrench, and we found my old tool was off by almost 15 foot-pounds on the high end. That was six months ago. I bought a good one for engine work and haven't had a single comeback for a leak since. Anyone else have a tool they thought was overpriced until it saved a job?

Had a customer's alternator bolt shear off flush in the block on a 2015 Silverado

It happened yesterday afternoon when I was doing a routine replacement, and the lower bolt just snapped with a loud pop. I ended up having to drill it out and use an extractor, which added about two hours to the job. What's your go-to method for dealing with sheared bolts in tight engine bays?

Showerthought: The day a 'simple' brake job on a 2008 F-150 turned into a full axle rebuild.

Customer came in for new pads and rotors, but the caliper bracket bolts were so seized we had to torch them out, which led to finding a cracked caliper mount on the axle itself. The whole thing snowballed into a 6 hour, $900 repair instead of the quoted $300. When do you guys decide to stop a 'simple' job and call the customer with the bad news?

I dropped almost $400 on a full set of those fancy magnetic socket holders and I'm calling it a waste now.

I mean, I saw them all over the place and thought it would be a game changer for keeping my sockets in order. The idea of them sticking right to the side of my box was cool. But in a real shop, they just collect metal dust and grime like crazy. After about a month, the magnets were so gummed up that sockets would just slide off if I bumped the tray. I had a 10mm fall into a customer's engine bay, and that was the last straw. It took me twenty minutes to fish it out with a magnet on a stick. Now they're in a drawer, and I'm back to my old plastic rails. Has anyone found a good way to keep sockets both clean and easy to grab?

Overheard a customer at the parts counter say 'it's just a bolt, how hard can it be'

He was buying a single head bolt for his truck, and the guy behind him in line (who looked like he knew his stuff) just shook his head and muttered 'torque specs and sequence exist for a reason, pal'. It made me think about all the times I've had to fix a job where someone thought it was that simple. How do you guys handle it when you see a DIYer about to make a costly mistake right in front of you?

My old impact gun seized up on a big brake job yesterday

I was working on a Ford F-150 with some really stuck caliper bracket bolts. The gun just made a loud click and stopped turning. It's a Milwaukee 2767 that I've had for about five years. I took it apart and found the anvil was completely locked up with old grease and metal dust. Cleaned everything out with brake cleaner and put in fresh grease, and it runs like new now. Has anyone else had to rebuild their main impact gun, and what parts did you need to replace?

Just realized I've been over-torquing lug nuts for a decade after a customer's offhand comment.

A retired machinist in for an oil change yesterday said 'you know, that click you hear is the wrench yielding, not the bolt,' and I've been thinking about it all morning.

The week I had three cars with the same weird electrical gremlin

In my experience, you get a run of the same job sometimes, but last week was wild. I had a 2012 Civic, a 2015 Fusion, and a 2018 Equinox all come in with the same thing: random dash lights and a rough idle, but no stored codes. It took me a full day on the first one to trace it back to a bad ground strap on the engine block, corroded right where it bolts on. The other two had the exact same issue in almost the same spot. I guess with all the road salt we had this winter, it's just eating through those straps. I ended up replacing all three with a heavier gauge part I keep on the shelf now. Has anyone else seen a spike in weird electrical faults from bad grounds lately, or is it just my shop?

Spent $80 on a cheap borescope and it saved my whole weekend

I was chasing a misfire on a Ford Escape that had me stuck. The code pointed to cylinder 3, but the plug and coil looked fine. I bought a cheap borescope from the parts store, snaked it down the spark plug hole, and found a big chunk of carbon sitting on the valve. Took about 10 minutes to vacuum it out and the car ran perfect. What's the weirdest thing you've found with a scope?

Question about a torque spec on a 2018 Ford F-150 timing chain job

My buddy Jake at the shop in Springfield told me to just go by feel on the camshaft caps, said the book spec was too high. I followed the manual instead and torqued them to 89 inch-pounds. Found out later his method led to a spun bearing on another truck. Has anyone else run into this with the 3.5 EcoBoost?

A quick note on torque specs for those aluminum oil pans

I keep seeing people crank down the bolts on those newer GM 2.7L turbo engines like they're old iron blocks. The spec is only 18 ft-lbs, and over-torquing warps the pan. I learned this the hard way after a repeat leak on a customer's Silverado. What's the weirdest low-torque spec you've run into?

PSA: I tried two ways to clean a throttle body and one was a total waste of time

I had a 2008 Civic come in with a rough idle last week. First, I just sprayed cleaner into the throttle body with the engine off, wiped it, and called it good. The car came back two days later. This time, I took the whole throttle body off, cleaned both sides of the plate and the bore with a toothbrush and cleaner, and made sure the IACV passage was clear. The difference was night and day. The idle was smooth right away and stayed that way. The first way just moved the gunk around, but the second way actually got it clean. It took maybe 15 extra minutes but saved a comeback. How do you guys handle throttle body cleans on older cars when you're trying to be quick but also do it right?

I had to choose between a full engine rebuild or a used motor swap on a 2015 F-150

Customer's 3.5 EcoBoost had a cracked block, and the quote for a full rebuild with new parts was around $8,500. A low-mileage used engine from a salvage yard was $4,200 plus my labor. I went with the used swap to save the customer money, and it took me two full days to get it in and running. Everything seemed fine for about three weeks, but now it's throwing a persistent camshaft position code that wasn't there before. I'm starting to wonder if the used motor had a hidden issue. Has anyone else had a used EcoBoost swap bite them like this, and what's your go-to fix for these cam codes?

I got a timing belt job wrong on a 2007 Honda Civic in my garage last month

I was sure I had the marks lined up perfectly, but after I put it all back together it wouldn't start. I had to pull the valve cover and found I was off by one tooth on the exhaust cam. It took me another 3 hours to redo it. Anyone else ever have a timing job fight you like that?

Remember when you could actually see the whole engine bay without a special tool?

I was replacing a water pump on a 2018 Civic in my home garage last fall and dropped a 10mm socket into a gap so small I had to take apart half the front end just to fish it out with a magnet on a stick, which took about 45 minutes and made me miss my old '92 pickup.

Question about a weird noise after a timing belt job on a 2015 Honda Civic

I just finished a timing belt change on a 2015 Civic with the 1.8L engine. I followed the manual, torqued everything to spec, and double-checked the marks. When I started it, there was a loud tapping from the valve cover area that wasn't there before. I shut it off right away. I learned that even if the marks look right, the belt can be off by one tooth on the cam gear and still crank, but the valves will be out of sync. Has anyone else had this happen with the R18 engine? What's the best way to verify alignment before the final start?

TIL my old boss was right about sticking with the factory service manual over YouTube for that 2012 F-150 timing job.

I spent a whole weekend trying to follow a video that skipped the cam phaser alignment step, which cost me a new set of chains and about $400 in parts when I had to redo it all by the book on Monday.

Changed my mind about using a breaker bar on those rusty Ohio bolts

I always used a big cheater pipe for stuck suspension bolts, but a guy at the shop said to try a 1/2 inch impact first after soaking it in PB Blaster for 15 minutes. Tried it on a 2007 Silverado control arm bolt and it came right out without the risk of breaking my socket. What's your go-to method for really stuck hardware?

My old foreman in Detroit told me to always hand-tighten oil filters first

Back when I started, this guy named Frank ran the shop and he was super strict about it. He'd say, 'Craig, your arm is the best torque wrench you got for a filter.' I thought he was just being old school, so I'd sometimes use the strap wrench to get it 'good and tight' right away. Well, about a year later, I had a customer come back with a huge leak from a filter on a Chevy 350. I had cranked it on so hard with the tool that the gasket pinched and tore. Frank just shook his head and showed me the crushed rubber. Since then, I spin it on by hand until it seats, then give it just a three-quarter turn with the wrench like he said. Never had a leak from a filter since. Anyone else have an old timer tip that seemed silly but saved your bacon later?

A guy at the parts counter in Spokane told me 'the computer says it fits' and cost me 3 hours.

Snapped a bolt off in a Ford F-150's exhaust manifold last Tuesday

Was doing a simple manifold gasket swap on a 2014 model and the third bolt just sheared clean. Had to drill it out and use an extractor, which took like two extra hours. Anyone got a better method for dealing with stuck exhaust bolts on these trucks, or is it just always a gamble?

My old boss insisted I replace the entire AC compressor on a 2017 Civic, but a new apprentice said to check the clutch relay first.

He was right, it was just a $15 relay. Anyone else have a story where the simple fix was overlooked?