HELP PLEASE

I HAVE A 1994 DEFENDER NAS 3.9 V8 THAT BACKFIRE INTO THE INTAKE AND MISSES AND HAVE NOT POWER, HOWEVER AS SOON I DISCONNECT THE MAF SENSOR IT DRIVES LIKE IT JUST TO BE. ALL THIS AFTER A SHORT CIRCUIT IN A RELAY AND IT BURNED THE GROUND WIRE AND THIS GROUND WIRE BURNED THE GROUND TERMINAL 40 AND 14 FROM THE ECU. I DID REPAIR THE GROUND IN THE ECU BUT NOW I HAVE THIS PROBLEM, HOW EVER I TEST THE MAF, TPS, COOLANT TEMP, FUEL TEMP AND ALL OF THEM ARE OK, THEN I WENT FAR AND REPLACE ALL OF THIS SENSOR FROM MY DISCOVERY I THAT IS RUNNING FINE AND IT DID NOT MAKE ANY CHANGE; THE DEFENDER HAVE NEW SPARK PLUGS, TAP, ROTOR, SPARK PLUG WIRES, FUEL FILTER, AND IT IS PERFECTLY ON TIME. WHAT REALLY PUZZLE MY IS WHY IT RUN GREAT WITH OUT THE MAF.

BEFORE HAND THANKS FOR ALL YOUR HELP.

 

Have you try swapping a known good 14cux ecu?

 

Thanks Mike

No I have not try a different good ecu, however I do have a 1997 Disco 1 with a 3.9 and I think its the same ecu but it bolts different and I also have one ecu from a range rover 3.9. Do you think I can try any of this ecus?


Thanks so much for your help

 

you should be able to plug any 14cux into it. it should start and run
and at least get you on track.