Quote:
Originally Posted by Escy
I don't think that's correct. ECU plug D, pin 33 is fuel level and pin 34 is for the reserve light. I was reading on another forum about someone fitting a Boxster cluster into a 914, from full to 1/4 of a tank it works from the sender, the opinion on the forum was from 1/4 tank and lower it used calculations based on the ECU consumption data.
I want to see what the score is from someone that's using the standard gauges but not the standard ECU.
|
I've done some more digging. On a 986 for the first 3/4 tank the cluster takes a reading directly from the fuel sensor. Once the reading from the sensor hits a certain level, a signal is triggered from the cluster through the fuel status pin #22 on the blue connector to DME pin #39. This then starts the the dme sending a signal from the fuel consump pin #83 linked to the injector duty cycle to the cluster pin #13 of the white connector. The cluster then calculates the fuel usage and displays the last quarter tank.
In short, as long as you dont go below 1/4 tank the cluster will work. Once you go below 1/4 it wont work unless you rig up a signal from the aftermarket ECU to mimic the DME.