L/100KM gauge
#1
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L/100KM gauge
Got this off eBay for pennies. I didn't realize this was a ROW option only, M255, until after I bought it! (Is there an MPG version?) My US 86 glovebox manual doesn't mention it, although it is visible in one of the dash pics.
I think it's cool, and fills the empty space on the tach. Installation was easy as it is already wired for it.
I am having some trouble remembering the conversions, L/100KM-MPG, 5-47, 15-15.7, 25-9.4. Most of the time it's at 25, the way I drive.
I only had two extra bulbs left for the PRND32, so I replaced the P and D. Of course, after it was installed, the 2 doesn't work. I want to replace the foil, so it's coming out again, anyway.
The 'computer' has four inputs, injector pulses from the LH, speed, RPM, and coolant temp. The coolant temp surprised me. The gauge doesn't do anything until the speedo shows over 5 mph (which made me think it was broken, after I installed it), and on decel, the injector pulses drop out, so it goes to 0, too.
BTW, AFAIK, 85-88 can interchange instruments - the circuit foil is the same part number.
I think it's cool, and fills the empty space on the tach. Installation was easy as it is already wired for it.
I am having some trouble remembering the conversions, L/100KM-MPG, 5-47, 15-15.7, 25-9.4. Most of the time it's at 25, the way I drive.
I only had two extra bulbs left for the PRND32, so I replaced the P and D. Of course, after it was installed, the 2 doesn't work. I want to replace the foil, so it's coming out again, anyway.
The 'computer' has four inputs, injector pulses from the LH, speed, RPM, and coolant temp. The coolant temp surprised me. The gauge doesn't do anything until the speedo shows over 5 mph (which made me think it was broken, after I installed it), and on decel, the injector pulses drop out, so it goes to 0, too.
BTW, AFAIK, 85-88 can interchange instruments - the circuit foil is the same part number.
#3
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I forgot to say, ROW after 85, AFAIK. The gauge was a US option 82-84.
When stopped, the gauge goes to zero in several jerky steps.
When stopped, the gauge goes to zero in several jerky steps.
#4
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Notice also, while I had the instruments out, I spent about an hour scraping off the [Unleaded Fuel Only] sticker - with my thumbnail - so as to not scratch the plastic. Torture! But, it looks so much better.
#5
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SON OF A !@#$^%& I've been sitting on one of these for YEARS, I asked this question a billion times, what is needed and was told the brains would not power it so I never installed it.
#6
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Originally Posted by PorKen
Notice also, while I had the instruments out, I spent about an hour scraping off the [Unleaded Fuel Only] sticker
Rich
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928FIXER (12-11-2023)
#7
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Once the reactors are )(orcised, the point is moot.
Originally Posted by Richard S
But how will you know what kind of fuel to use?
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#8
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Originally Posted by PorKen
When stopped, the gauge goes to zero in several jerky steps.
#9
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Hmmm. I wonder there's a problem with my gauge (or circuit foil, etc. - I still have a wonky gas gauge), or if the 85- has different circuitry.
#10
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Originally Posted by D_Schultz
That's weird - the gauge in my euro '83 sits right around 14 when I am sitting at idle after the car has warmed up.
The gauge turns to consumption per hour after you come to a complete stop. My guess would be 1.4 liters per hour....
Thought behind it was to keep the owner informed about the amount of gas used while at idle.
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I've just bought an '85 cluster with one of these fuel consumption gauges in it. The tacho is for a manual [no gear selector positions] and my 2 cars are both auto, so I don't know if I can be bothered with it.
Is there a wiring diagram for the consumption gauge circuit?
Is there a wiring diagram for the consumption gauge circuit?
#13
Probably long overdue, but I'm looking for a tacho with fuel consumption gauge for a manual car. The one shown above, going up to 25 liters without the l/h alternative (like in the older model years). Also without the automatic gear selection indicators. A new one from RosePassion is around €500, but I'm not willing to spend this much just to see how much fuel the car guzzles.
Anyone has something lying around?
@ramcram maybe?
part number would be 92864196510 if I'm correct. (928 641 965 10)
(My car is an '84 Euro, twin distributor, manual 5sp.)
Anyone has something lying around?
@ramcram maybe?
part number would be 92864196510 if I'm correct. (928 641 965 10)
(My car is an '84 Euro, twin distributor, manual 5sp.)
Last edited by TM___; 12-11-2023 at 12:42 PM.
#14
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Probably long overdue, but I'm looking for a tacho with fuel consumption gauge for a manual car. The one shown above, going up to 25 liters without the l/h alternative (like in the older model years). Also without the automatic gear selection indicators. A new one from RosePassion is around €500, but I'm not willing to spend this much just to see how much fuel the car guzzles.
Anyone has something lying around?
@ramcram maybe?
part number would be 92864196510 if I'm correct. (928 641 965 10)
(My car is an '84 Euro, twin distributor, manual 5sp.)
Anyone has something lying around?
@ramcram maybe?
part number would be 92864196510 if I'm correct. (928 641 965 10)
(My car is an '84 Euro, twin distributor, manual 5sp.)
#15
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