Hi!
I've been bemoaning my poor fuel economy --calculated by resetting the tripmeter each time I get gas, and dividing the previous reading by the #miles traveled-- when I noticed something interesting today.
The tripmeter was frozen at 110.8 for at least 2 miles. It rolls every 1/10th mile, and I definitely went more than 1/10th, much more, and it didn't move. I am pretty sure the odometer did roll over for them, but not certain upon reflection. It doesn't roll over every 1/10th, so you can't watch it move the same way. It resumed again later, or it must have, because when I got to work it was 112.
So obviously the gears are good.
And, I replaced the gears with the modern plastic ones just three weeks ago, so.
And the cable must be doing something too.
How precisely does the electric tripmeter (and odometer) work? Is it a motor, that receives pulses like a tachometer? If the motor is weak, could it end up turning more slowly or seizing intermittently?
Again, as per the title, this is a 90+ electric tripmeter, not the all-mechanical cable of -89.
I'd like to know what can cause this, so as I get into diagnosing I know something of where to look for this symptom.
OTOH my fuel economy might still suck badly for other reasons, just because I've noticed, once, in many months, that the tripmeter was frozen briefly, does not mean it's frozen often enough to explain 10 months of 12mpg averaged.
I've been bemoaning my poor fuel economy --calculated by resetting the tripmeter each time I get gas, and dividing the previous reading by the #miles traveled-- when I noticed something interesting today.
The tripmeter was frozen at 110.8 for at least 2 miles. It rolls every 1/10th mile, and I definitely went more than 1/10th, much more, and it didn't move. I am pretty sure the odometer did roll over for them, but not certain upon reflection. It doesn't roll over every 1/10th, so you can't watch it move the same way. It resumed again later, or it must have, because when I got to work it was 112.
So obviously the gears are good.
And, I replaced the gears with the modern plastic ones just three weeks ago, so.
And the cable must be doing something too.
How precisely does the electric tripmeter (and odometer) work? Is it a motor, that receives pulses like a tachometer? If the motor is weak, could it end up turning more slowly or seizing intermittently?
Again, as per the title, this is a 90+ electric tripmeter, not the all-mechanical cable of -89.
I'd like to know what can cause this, so as I get into diagnosing I know something of where to look for this symptom.
OTOH my fuel economy might still suck badly for other reasons, just because I've noticed, once, in many months, that the tripmeter was frozen briefly, does not mean it's frozen often enough to explain 10 months of 12mpg averaged.
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