Nigel Harris Posted May 9, 2015 Report Share Posted May 9, 2015 The tach needle sweeps all the way around to the stopper pin then comes back to 2000rpm and won't go lower even with key off. The car will fire but won't run - Â are the 2 related ? Quote Link to comment Share on other sites More sharing options...
Simon Posted May 11, 2015 Report Share Posted May 11, 2015 Hi Nigel What is the car and ECU? Plugin / wirein? Is it a first time set up or has the fault developed? Quote Link to comment Share on other sites More sharing options...
Nigel Harris Posted May 11, 2015 Author Report Share Posted May 11, 2015 Hi Simon, Thanks for the response. ECU = G4 Plugin into a 1992 300zx ... engine = Twin Turbo Fault has developed ... Have fitted new Cams and discovered issue upon trying to start the car for 1st time. ECU is giving the following faults: AN6 at 5V AN V6 at GND AN V3 at GND AN T2 at V5 Quote Link to comment Share on other sites More sharing options...
Simon Posted May 12, 2015 Report Share Posted May 12, 2015 AN V 6 is the Oxy input AN V 3 is the TPS AN T2 is the fuel temp All assuming it is using the stock configuration. TPS might have an effect on the starting. But the error could just be due to the sensor being unplugged at some point. I would start by clearing the errors to see if they come back up. I would also check for any ground wires that might have been left off after the CAM change. Quote Link to comment Share on other sites More sharing options...
Nigel Harris Posted May 12, 2015 Author Report Share Posted May 12, 2015 Cheers for that, will it go tonight. Quote Link to comment Share on other sites More sharing options...
Nigel Harris Posted May 12, 2015 Author Report Share Posted May 12, 2015 Now getting a   AN V6 at V5 fault ... Quote Link to comment Share on other sites More sharing options...
Nigel Harris Posted May 13, 2015 Author Report Share Posted May 13, 2015 Oh, and the Tach needle is still doing it's thing. Quote Link to comment Share on other sites More sharing options...
Nigel Harris Posted May 13, 2015 Author Report Share Posted May 13, 2015 Found the problem .... the ECU is seeing 14500+rpm on startup so is cutting fuel and ignition. So I am now searching for the wiring issue, will most likely replace the whole EFI Harness. Quote Link to comment Share on other sites More sharing options...
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