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I filled up the car at the local gas station yesterday. Whenever I fill up I always reset the trip meter A. I reset the trip meter A after filling up. We took a trip and got back late last night. I know for a fact that this trip is approximately 196 miles one way. I Googled it before I left and I just did it again on both Google Maps and Mapquest. Plus we did about 20 miles of driving around while we were at our destination. This should have totaled around 412 miles on trip meter A. But, it is only reading 308 miles when I looked went out and got in the car this afternoon? The trip meter knob did not get touched for any reason during the entire trip.
Something is definitely not right. We are doing another 300 miles trip tomorrow. And I plan to check it again. Has anyone else had this happen?
snook, always wanted to ask you this. hey, no offense intended. does expression "they found snook in her snooze" sound familiar?
anyhow. mine shows 4mph speed higher than the true speed. i know for sure as i drive with gps (screw OEM nav system!) and it shows speed, and gps-s are known to be more accurate than speedos.
otherwise, you do have words like "about" and human factor involved. you do not know 100% yourself how accurate your observation is.
hence, if you go today for 100% accurate 300 miles trip, reset your tripB odometer AND MAKE SURE NOT TO DO ANY SIDE TRIPS with "about" and "around" mileage. THEN you can have some valid data.
anyway, so what's wrong with it? she puts "less mileage" on it. be happy. better resell value, he-he.
I am an old moron that is going blind to boot. It WAS in fact on trip meter B. I switched it over and there was the 422 miles I was talking about.
Geezzz.
Nope, never heard that one before... "Snook in her snooze"? Sounds pretty graphic to me.
I fish a lot. "Snook" is for the fish, "Whaler" is my boat. I like to target Snook when I fish the coastal waters of Sebastian. Hence..... SnookWhaler.
oh the infamous human factor... stories i could tell about my life...
there's South Park episode with H. Clinton. terrorists put a portable nuclear bomb in her you know what. for coding purposes, FBI/CIA called it snook, as it was in her s..... at some point, they approach her and tell her" Mrs Clinton, you have s in your s".
The inaccurate speedo is due to rules (in the US at least) that allow car manufacturers to be harshly fined if the speedo ever UNDER reports the speed. Due to differences in tire tread depth and other related factors, the speedo is set about 4MPH over to provide a "buffer".
well, andy, let me tickle ur curiosity. scangauge i have connected, actually, does show REAL speed.
it's the speedometer in the dashboard that lies.
oh, and how about this. if ECU does know the true speed, confirmed by scangauge, why then it kicks ICE in at 38mph (42 on speedometer), but not at 46 on speedo. ain't it a question?
It appears as though I was wrong about the US laws (I was stating Europe's laws), but was close.
I've read a lot of "unofficial" posts regarding the speedometer issue, but the link below provides the best info. In Europe, the speedo can NEVER show lower than true speed, but is allowed to overstate speed by a decent margin. In the US, it's not as strict, but they are still given less room for error on understating the speed compared to overstating.
well, andy, let me tickle ur curiosity. scangauge i have connected, actually, does show REAL speed.
it's the speedometer in the dashboard that lies.
oh, and how about this. if ECU does know the true speed, confirmed by scangauge, why then it kicks ICE in at 38mph (42 on speedometer), but not at 46 on speedo. ain't it a question?
You being new to the scangauge. You may need adjust the mph calibration setting. I called our local DOT or Department of Transportation and ask where to find their calibrated mile post. The Highway Patrol may also have that information.
It's a lot easier to count the green mile post on a straight rather level highway than one that has curves and is hilly. I set my scangauge using a digital stopwatch. 1 mile = 60 seconds at 60 mph (with cruise). I drove the mile at 1:05 seconds at 50 mph (with cruise), same thing. I think it was 1:05 on the seconds. The post are easier to see going by the side of the windshield when I drove slower.
The EV shuts off and the ICE starts at 42 mph by the scangauge. I drive 41 mph and it will stay in the EV mode only if on a level highway or very slight downgrade.
It's better to have a passenger do the time and look for the mile markers. You will find the scangauge mph calibrate is very accurate. It takes 2 or 3 button presses to make 1 mph + or - to get the correct exact speed.
well, that's not the point. point is twofold:
1. according to scangauge, ECM does "know" true speed, as scangauge only shows what ECM "knows"
2. same time, "knowing" that car is, actually, rolling at 38mph, showing faulse 42mpg on speedometer, ECM will kick ICE in, like as if car is rolling at 42.
that's kinda screwy, i must say, for car that is designed for better mileage.
I am an old moron that is going blind to boot. It WAS in fact on trip meter B. I switched it over and there was the 422 miles I was talking about.
Geezzz.
Nope, never heard that one before... "Snook in her snooze"? Sounds pretty graphic to me.
I fish a lot. "Snook" is for the fish, "Whaler" is my boat. I like to target Snook when I fish the coastal waters of Sebastian. Hence..... SnookWhaler.
Regards,
AJ
I did similar when my TCH was new. I did loose a few tanks of calculated mpg due to the oil changes. Early on I forgot I had to hold in the A trip to reset the 5000 mile oil change readout alert. I stopped using the calculator method as it's not as accurate as the MFD readout. (different pump pressures, unlevel pump driveways). The readout usually reads 1 to 1/25 mpg high over the calculated method. The MFD mpg readout seems consistently accurate from tank to tank.
I'm critical on this point as I drive for maximum mpg which I enjoy the challenge.
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