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Does a car or truck’s air filter stop wildfire smoke? (VIDEO)

Description Can a vehicle’s air filtration help keep you safe from wildfire smoke and poor air quality? While that’s a tougher standard than most systems are built to meet, don’t overlook a simple step to get the most of your existing filter.Related Videos

Forgotten Classics: The 1990-1993 Chevrolet 454 SS Muscle Truck

The early 1990s were an interesting time for those looking for raw horsepower in a fun package. Ford’s Mustang had a 5.0L V8 with 205 horsepower and 275 lb-ft of torque, not too shabby. Camaro buyers could get a 5.7L V8 that put out 245 horsepower and 345 lb-ft of...

Engine Management and Fuel Trim – ASE Practice Question (VIDEO)

Description Technician A says that the ECM's primary role in engine management is to ensure that emissions remain within the limits for which the vehicle was originally certified. Technician B says that the fuel trim data PIDs (Parameter Identifiers) represent...

Ford Door Latch Cable Repair Tips and Tricks: 926-111

“Customer states rear door inop.” If you see that line on a ticket and the make and model is a Blue Oval truck or van, what you have is likely related to the door latch. Specifically, the cable end that operates that latch has cracked and crumbled. Ford will tell you...

Does Fuel Octane Rating Really Matter?

Life is full of small decisions. Pulling up to the gas pump, you are immediately faced with a choice: which octane fuel to use? The owner's manual for any vehicle should provide a minimum octane requirement, but is it worth filling up with a more expensive fuel with...

How to Make Your Own Molded Hose in a Pinch

When a vehicle’s vacuum or heater hose is in need of replacement, we tell the service writer, they sell the job and a little while later, a custom-formed piece with eleventy-four bends shows up, just like magic. But it wasn’t always this way. In Ye Olden Days, we’d...

Diesel and DEF – ASE Practice Question (VIDEO)

Description Technician A says that an empty DEF (Diesel Exhaust Fluid) tank can result in a “no start” complaint. Technician B says that the quality of the DEF fluid in the tank should be checked when SCR system faults are noted. Who is correct?A) Technician AB)...

EDC: Mechanic Edition

EDC, or “everyday carry” has become a popular topic of conversation. At first I thought people’s interest in this was a zeitgeist, but I think it’s got more staying power than I originally surmised. I used to (and still) roll my eyes when someone posts a beautiful...

A different type of timed event: the Bobby Bosch Relay Race

by | Oct 3, 2024

I’ll hazard a guess you’re familiar with the 24 Hours of Lemons. If not, it’s endurance racing for Joe Sixpack on a severely tight budget ($500). Ridiculous paint jobs are de rigueur. Costumes are encouraged. Everyone sandbags and cheats and tries to fudge the budget and sneak power-adders under the hood.

It’s not serious. I mean, it is serious, but the big prize is fun, not money. Of course there is a need for rules and a sanctioning body. By and large judges at these events are just rendering judgment on the fly and that’s that. Punishments and penalties for infractions, given the somewhat lax environment, tend to be creative.

To get you on the right track here, penalties for racing safety infractions have included mandatory wiring of the 6 tone car alarm siren to the ignition with constant hot (so the car is racing with this annoyance blaring). One penalty involved instructing a “civilian” on how to operate a manual transmission before being allowed back on track. There’s also the Grille of Damocles, presented to habitual tailgaters: a Volvo grille, modified to accept tons of threaded rod. The grille, which is then mounted to the offending car, has that rod oriented to point right at the radiator to discourage the aggressive driver. And if “Build A Cardboard Engine” doesn’t put a smile on your face, I don’t know what could.

Water pumps are often replaced because of a little coolant loss at the weep hole.
Photo: Mike Apice.
Enter the Bobby Bosch Relay Race, a form of automotive cruelty I find hilarious. Robert Bosch, a German automotive inventor who was way kinder than the people at Volkswagen who just sat around making sausage during World War II, cranked out lots of automotive relays at his eponymous company. In fact, you may even know or refer to the common 4- and 5-pin relays under the hood and dash of many motor vehicles as “Bosch-style” relays.

The Relay Race is administered when a Lemons car is black-flagged. The offending team is taken off the track to suffer a lap/time penalty, which is variable: the team is presented with ten relays plucked out of the salvage yard. Nine are good. One is not. The vehicle and driver are permitted to get back on the track and racing when the bad relay is identified and presented to the judges.

I thought this was fun when I learned about it, and I bet you will, too. If you’re still learning (and maybe convinced relays run on magic smoke), the Dorman Training Center has a pretty killer video that can help demystify the electrical diag process. (Skip to 39:39 for a super-rapid VD test being performed on a Bosch-style relay.) 75% of the wiring diagram for one is there, too. I always have to look these up when I need to test one.

It’s a deceptively simple penalty. I love it. I would giggle about it, and get back on the track quickly, I think, and you probably would, too. But it does point out how painful most people find electrical diagnostics and troubleshooting, and it’s a nice commentary on the exasperation that we all have suffered chasing mysterious maladies—and maybe a good reminder to bone up on some of the basics now and again.

Water pumps will last a long time if the engine is properly maintained.
Photo: Mike Apice.

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