Over the past 6 years, I have slowly but surely replaced the majority of the steering components on my truck. The latest part that I swapped out was the Idler Arm. Mine was totally smoked, and may have even been the original one that came with the truck 22 years ago. As you can see in the picture, there is nearly zero bushing left inside where it attaches to the bracket. I am sure that the fact that it was ungreasable lead to its demise, but it was the gigantic car launching pot hole near my house that really finished it off. Let’s hear more about it!
In the moment before I hit the unavoidable paved crevasse that was racing toward me, I began saying “oooooohh” very loudly and immediately clamped my jaw shut. I figured that if I did this, maybe I wouldn’t bite my tongue off when I rolled my truck deep into the nearby woods while on fire. I then double checked my seatbelt, and began mentally preparing for impact. The mating of my right front wheel with this hole in the road, was time bending. In reality, it may have lasted less than 1 awful millisecond, but it felt like an eternal sentence in Destructionville. Oh gosh the sound was atrocious. Imagine what it sounds like to crash a medieval castle into an equally large, yet fragile, glass tank full of anchors. That is close to the sound that my truck made when contact was made. Each and every part of my truck separated for a split second and then came crashing back together again. When my brain turned back on and all wheels were touching the ground again, I was miraculously still driving down the street. I pulled into my driveway, twitching just a little bit, and noticed a fantastic new clunk in my steering to track down. Alas, the idler arm had given up the ghost. » Continue reading more of this post…
The Automotive lesson today is:
When you drop your cut off wheel on the ground, or step on it, the wheel is going to break and leave you standing there surprised…. again. No matter how many times you try, you can’t just fold it back and use the broken blade because you know it flies off dangerously every time. Seriously? You gotta stop trying that.
VIN numbers allow ordinary people to be detectives, and who doesn’t want to solve a mystery?
FACT: In 1981, the National Highway Traffic Safety Administration forced the standardization of VIN’s (Vehicle Identification Numbers) on all of the car manufacturers. From that point forward, all VIN’s were a 17 digit code, each digit representing an important detail about that car. LIES!! BLASPHEMY!! Ok, fine…. 16 of them are important car details, blame Einstein for the seventeenth digit. We will cover that later….
FACT: I, O, and Q are letters that are not used in VIN’s because they could be confused with 1 & 0. Letters U & Z aren’t used for the 10th digit. Crazy, I know.
FACT: Albert Einstein never owned a car, so he likely knew nothing about VIN numbers or their meaning. Does that make all of you guys smarter than Einstein? Yes, it absolutely does. » Continue reading more of this post…
Remember science class when the teacher shouted “Pay attention! You might need this someday!” ? Well, as much as I don’t want to admit it, that teacher was right. Lets touch upon the basics and see if it rings a bell?
- First off – MAP is an acronym for Manifold Absolute Pressure. MAP sensors measure the air pressure in your intake manifold which helps the engine’s computer determine air / fuel ratios. MAP sensors are set to “zero” from the factory. So with the car off, and the key on, the MAP sensor will read “zero” at sea level.
- On earth, we have 14.7 Pounds per Square Inch (PSI) on us at all times at sea level.
- “Bar” is a measurement of pressure. 1 Bar = 1 atmospheric pressure, which is 14.7 PSI.
- The absence of pressure is measured in “Inches Of Mercury” (in. hg). (Finally we get to use the periodic table of elements in real life!)
- -1 Bar = -29.4 in. hg
- 1 Bar = 29.4 in. hg
- Naturally Aspirated = without a turbocharger or supercharger. Also known as “N/A”.
- Forced Induction = with a turbo or supercharger
- In forced induction applications “Boost” is automotive slang for PSI
- Stoichiometric Air Fuel Ratio = The ratio of the exact amount of air it takes to burn a fuel completely.
- Stoichiometric for Gasoline Engines = 14.7 : 1 (14.7 parts air to 1 part fuel).
Now some of that good stuff:
With a N/A engine running, the MAP sensor may see readings » Continue reading more of this post…
Oil Antifreeze Milkshake
Every few months, some article pops up on the internet talking about how people don’t need to change their oil at 3000 miles “anymore”. This article on Yahoo News is a great example of this, and it bothers me. To save you some time, I’ll give you the cliff notes of the linked article. They basically tell people that 73% of California drivers are changing their oil too often, and wasting their money (I’m still cringing). Then the article goes on to say to look at your owners manual, and do oil changes at whatever mileage interval it says. Seems like a good idea right? Well, sure in a fantasy world, yes. In the real world, no. Also, how does the author of this article knows that people are changing their oil too often if he doesn’t know the oil change intervals of all of their vehicles. Seems odd to me, but I’ll move forward anyway.
About 9 years ago…. when I was a technician at a dealer, it was a frequent occurrence for customers to come in for an oil change with less than half of their recommended oil left in their car. The majority of cars that I did oil changes to held 8 quarts of oil, and 3 quarts frequently came out at the manual-recommended oil change interval. The manufacturer of this particular car claimed that it was “normal” for these types of engines to burn 1 quart of oil every 1000 miles. Nice! So even if you did a 5000 mile oil change, you’d likely only have 3 quarts left. » Continue reading more of this post…
Last Wednesday, we talked about Curb Weight, GVWR, GCWR, GAWR, payload capacity and how “tonnage” slang terminology is not reality. Now, let’s put all of that great knowledge to use by deciphering the name’s of Ford, Chevy, and GMC trucks. The automotive slang is in quotes for your reference. To determine which truck you have, just look at the 5th digit of the VIN number. This is the digit of the VIN that tells you the series of the vehicle. For Chevy and GMC full size trucks built after 1980, it will be C, K, R or V. Oooooh, a secret code? Read on….
Chevy C/K Trucks
C-Series Truck = 2 Wheel Drive (1960-2002)
K-Series Truck = 4 Wheel Drive (1960-2000)
C10 = “½ Ton” 2wd (1960-1987)
C20 = “3/4 ton” 2wd (1960-1988)
C30 = “1 Ton” 2wd (1960-1988)
K10 = “½ Ton” 4wd (1960-1987)
K20 = “3/4 ton” 4wd (1960-1988)
K30 = “1 Ton” 4wd (1960-1988)
C1500 = “1/2 Ton” (1988-1999)
C2500 = “3/4 Ton” (1988-2000)
C3500 = “1 Ton” (1988-2002)
K1500 = “1/2 Ton” (1988-1999)
K2500 = “3/4 Ton” (1988-2000)
K3500 = “1 Ton” (1988-2000)
Chevy R/V Trucks
R-Series Truck = 2 Wheel Drive (1987-1991)
V-Series Truck = 4 Wheel Drive (1987-1991)
R10 = “½ Ton” 2wd (1987-1988)
R20 = “3/4 ton” 2wd (1987-1988)
R30 = “1 Ton” 2wd (1987-1988)
V10 = “½ Ton” 4wd (1987-1988)
V20 = “3/4 ton” 4wd (1987-1988)
V30 = “1 Ton” 4wd (1987-1988)
R1500 = “1/2 Ton” ( Didn’t Exist!?)
R2500 = “3/4 Ton” (1989)
R3500 = “1 Ton” (1989-1991)
V1500 = “1/2 Ton” (Didn’t Exist!?)
V2500 = “3/4 Ton” (1989)
V3500 = “1 Ton” (1988-1991)
Let’s see examples!
Imagine you have a truck with VIN #:
1GCDC14H3G……. = 1986 Chevy C10 (2wd, 1/2 ton)
2GCEK19K0J……. = 1988 Chevy K1500 (4wd, 1/2 ton)
1GCHR33N7J……. = 1988 Chevy R3500 (2wd, 1 ton)
Fun Stuff Right?