Posted on 08/02/2018 6:06:11 PM PDT by Olog-hai
No joke. This entire piece could’ve been written by the Sierra Club. They don’t even try to hide it.
Yes, I hear you and understand. And there is also a data table onboard the computer memory banks that control combustion parameters for starting temperatures and switch to the data table at engine operating temperature.
There’s a lot of ‘data shaving’ designed to squeeze out that last ounce of performance.
But there is a bigger picture missing. Read #80 to see what that bigger picture is.
http://www.freerepublic.com/focus/chat/3676103/posts?page=80#80
Or cheap.
Compact pickups were vehicles for young men and were priced about the same as the manufacturer’s entry-level car. In the 80s, a base 2WD Ranger was only about $500 more than an Escort. Today, a Tacoma is $10,000 more than a Corolla.
Gahd, I love this man.
Nice conspiracy theory, but no. Among other problems, the market demanded larger vehicles and the value proposition wasn’t there. The compact pickups cost 3/4-7/8 what a stripped down full size truck did and they weren’t 3/4-7/8s as much truck.
In fact, CAFE and other regs made it so companies would *greatly* benefit if makers made smaller trucks as this would boost their truck CAFE numbers. This is why GM kept the Tracker in their lineup so long, to cite one example. However, people stopped buying them in the 2000s so the trucks either had to upsize or go away.
The two door SUV has basically gone away for the similar reasons. There are only two left on the US market - the Jeep Wrangler and a really expensive Land Rover that’s about to get canceled. And Chrysler’s said that since more than 75% of Wrangler sales are of the four door version, if demand drops much more for the two door, it will be canceled.
Uh... wow. You have little idea how modern vehicle electronics or system controls work.
The alternator is supposed to output a steady nominal 12V (in actuality, soemwhere around 13.8-14.5 to charge the battery and run all the systems in the car at the same time.) 5V would not run the car’s electrics, let alone electronics. 5V is provided to the sensors and only the sensors via voltage conversion in the car’s computer module - however, not all cars use a 5V baseline and many use 12V instead. One reason 5V is used is because this was inherited from the computer industry - your typical desktop computer of the 1980s had a power supply that provided 12V and 5V for various technical reasons and with the addition of 3.3V this continues through today.
> “The alternator is supposed to output a steady nominal 12V”
I know that but it is stepped down for electronics to 5V. When I wrote that the 5V comes from the alternator, I didn’t write it was stepped down from 12V because I wanted to be short and didn’t think it was necessary to insert detail.
Electrical and Electronics are separated by scale. Of course, car electrical components operate at 12V and electronics have had a 5V supply for impedance matching. Impedance matching is the reason why there’s a lower voltage norm.
Electronics can be fried easily if voltage swings. I know the onboard computer control modules have voltage regulators built into their input or on the circuit card. They will never rely on a higher voltage alternator which can degrade with time.
But you miss the bigger point as you think you’re somehow so knowledgeable about the minutiae.
Do you know what the bigger point is?
No, I don’t think so, You’re too hung up with drawing attention to yourself lecturing on distractive details.
From another web page. I have seen similar explanations elsewhere.
Chevyman21 replied the topic: Why they don’t make small pickup trucks anymore?
CAFE standards have made it prohibitive. CAFE is based on wheelbase and a small pickup makes it hard to meet the standards. This is why even regular cab fullsizers are going away as well. The bigger the vehicle, the less stringent the requirement it has to meet. This is why all the small pickups that did exist, either no longer exist or have become bloated versions of their former selves such as the tacoma and the Colorado/canyon(was the S10/sonoma/jimmy). All the while the Dakota and ranger have ceased to exist. The ranger does exist in Australia so I’m told, but it is nothing like it was. CAFE encourages model bloating. We will never see a Honda accord/civic like the 90s ones again, nor will we see a midsize pickup as they were with these regs in place, perhaps they will get repealed or at least partially lessened.
Retired Auto Tech
Love! Love! Love! If muscle cars could return, America WILL be great again.
The administration also said it wants to revoke an authority granted to California under the half-century-old Clean Air Act to set its own, tougher mileage standards. California and 16 other states already have filed suit to block any change...
Thanks Olog-hai.
No. I simply chose a single point that you were wrong on out of *many* as a single example because I’d be throwing a wall of text up if I were to explain every point you were wrong on and why in depth. A lot of the electronic, not the electrics, on a modern car actually does operate on that nominal 12V and does not rely on the PCM/ECU for voltage regulation.
To choose another single point of the many, Limp Home mode is actually not for ‘security’ but for safety reasons.
I build EFI/engine management systems for fun, profit and racing.
DPF ???
I repeat what others inform me of and they may not inform completely because I stop them after I get enough to get a sense of a larger persective. They may know much more than you and I suspect they do. But I’m not interested in detail. I’m interested in motive and intent.
Whether you build for whatever reason, you are still missing the bigger picture.
That should concern you.
I still think you are interested in self-affirming your ego value rather than get to the root of what this thread is calling out.
Try expanding your thinking.
Reminds me of work, I would rather drive the International 4300 than the Chevy 3500 because the International has much better visibility, despite the new Chevy having radio and air conditioning. Note the International 4300 is a much bigger truck.
” I would rather drive the International 4300 than the Chevy 3500 “
I’ve noticed these work trucks have come a long way lately. I last drove the Mack and it beat me up so bad I had to stop.
New ones are comfy though, and a better place to spend the day. Right now I’m considering the differences between a Ford F350 regular cab with manual trans and a Sterling bodied Ford.
Are you familiar by any chance ?
Not familiar with any Sterling smaller than a Semi and that was likely older than the International I drive at work.
From what I have seen of F-350s they likely have the same problem as the Chevy 3500, very hard to parallel park due to inability to see what is near the passenger side fender. The visibility is so bad that the International 4300 feels smaller.
I take it you mean big-block V8 muscle cars? because the small-block V8s now have horsepower that far exceeds that of the old big blocks, although they use more complex gearing and electronic fuel injection (the closest a small block got back in the day was the 1964 Corvette with a mechanically fuel-injected 327, rated at 395 horses IIRC). The Corvette never had as much horsepower as it does today.
EPA mandatory on board Diesel Particle Filter treatment
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