Re: MPG / MPG average readings

[tobias.jansson@ks.ericsson.se]

I have problems with my trip computer on my '90 200TQ
(instant mpg, avg mpg, avg spd, give weird readings sometimes)
so this thread sounded quite interesting...

Phil Payne wrote:
» In message  Andrew Asher writes:
» > Having not long collected my URq up from the workshop ( engine overhaul
» > ) I now find that the MPG on the digital dash is permanently reading
» > 5MPG.   I'm in BIG trouble if that's true - does any one know what
» > sensors are used to determine this figure - perhaps its a wire off
» > somewhere.
» 
» Three-pin connector on the side of the metering head/air mass sensor
» assembly.
» 

OK, sounds easy enough, but I also found this in the archives: (970530)

Allan Jones wrote:
>       I believe you have an '86 5K, correct? If so, do you know how to
> change(or clean if K&N) the air filter? Because if you do, you must go
> about the same process so that you are able to get UNDERNEATH the mass
> air-flow meter with a spray can. Remove the airbox cover and get it
> completely up and away from the bottom half...I know, if you have the
> same set-up, it's TOUGH! Remove the airfilter so it doesn't get soaked
> and place a rag down on top of the opened airbox(I soaked the living
> daylights out of it). Using fuel-injector/air-intake cleaning spray,
> begin to spray the mass air-flow meter and fuel distributor from
> underneath hitting everything that moves, and anything else that looks
> like it may have a part in your problem(I am not actually sure of what
> causes the problem, so I unscrewed the small plastic cube-shaped
> electronic piece attached to the side of the fuel distributor(it's
> pressurized, so be careful if you do so too) and sprayed away there
> too.... Basically spray and clean any- and every-thing in the area of
> the fuel distributor and you should have a properly operating trip
> computer again. This worked for me(mine now works perfectly again), so
> I hope it helps!

Are these two fixes related in some way???

/Tobias Jansson

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