EPnick22 Posted February 3, 2014 Share Posted February 3, 2014 Just rebuilt my car, upon startup the eml came on and ita code 31map sensor signal, after running it for half hour it still fuelled mid 10s on my wideband, when revved above 5k rpm it bangs big black smoke clouds, everythinga plugged in and fuses are all fine what is the hold up?! Quote Link to post Share on other sites
Stu Posted February 3, 2014 Share Posted February 3, 2014 Out of interest does it make any difference if you unplug the map sensor? If it does it might be something else. Could start with a quick check to make sure the vac line is plumbed up right and there's actually pressure at the map sensor end (ie not blocked) but checking there is vacuum on the pipe at idle..Next I'd check the wiring is ok - just use a multimeter to test continuity. One pin will be 5v when ign on, one is signal earth, and the other is signal to the ecu. Failing that might pay to try a different map sensor. Quote Link to post Share on other sites
EPnick22 Posted February 3, 2014 Author Share Posted February 3, 2014 thanks mate but i think ive sorted it, i didnt reconnect the map sensor wire after removing.my fuel cut defender and it was fine before i removed it, ill see in the morning when i run it Quote Link to post Share on other sites
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