Recently, I did some work on a 2001 Toyota Tundra because it had begun spitting antifreeze through the grille with the force of 1000 agitated llamas. I swapped out the severely cracked radiator and took it for a test drive to make sure the thermostat and heat were working properly again. Fortunately, the heating & cooling system worked flawlessly. Unfortunately, somebody had replaced the brake pedal with a partially deflated water balloon. It quickly became apparent that braking was not one of this truck’s finest features. It didn’t grind, but it didn’t stop either. I ever so gently coasted it back to the garage and pulled the wheel to see what what the rest of the night would look like for me.
What did I find you ask? Well, two things actually.
1) About 1/3 of the brake pad surface still touching the rotor and an inner pad that was almost down to the metal. Fun times.
2) Hey look! 4 piston calipers and 12.5″ rotors!! Sweet!
Last week’s oil change post turned out to be quite a hot topic that had some truly outstanding, in-depth comments. After all the positive feedback from it, it got me thinking about how often people change their oil / have it changed. You guys know where I stand at this point, so now it’s your turn to fess up and tell the truth. How often do all of you really change your engine oil? Give this poll to your friends & family and we’ll see what’s what. The polls have officially been opened!
If there were ever two words that shouldn’t be allowed to go together, “Montana” and “Fiero” would be them. The only logical reason to have a Fiero in Montana is to melt the snow in your driveway when the car eventually catches on fire. I’ve been in a Fiero in a snowstorm before, and while it is hysterically fun in a “I’m afraid for my life” sort of way, I wouldn’t recommend it to people that aren’t wearing helmets. Winter driving in a Fiero is like playing the lottery, but you’ve already lost the main jackpot and now you’re wishing you did something else with your dollar. Ok, let’s get down to business, there is a 87 Fiero 5-speed Sunroof car at stake here:
The current owner says:
“This is a great vehical, I blew the engine driving down the interstate.”
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).
“Needle nose pliers have two uses. The first is to pick up things that you drop into that deep part of your intake manifold. The second use is to pinch your fingers hard enough to make you squeak like a chipmunk. If you open these things up more than 1/16″, you are announcing to the world that you want to be injured in a strange new way.”
I don’t know about you guys, but I feel like one of the more fun things that I do between December and March is kicking off these…….um……what do you call them……. dirty…. snow….things. Anybody else absolutely love doing this? What about running them over after? Doesn’t it make you feel like a champion? It does for me.