Suprasteve Posted December 15, 2006 Share Posted December 15, 2006 Last night my friends R32 GTR wouldn't rev over 2,500 rpm. It was like it was hitting the rev limiter. So far we've tried .. resetting the ECU checked the wirering all seem fine cleaned the air flow sensors. any ideas are very welcome ? Thanks in advance Quote Link to comment Share on other sites More sharing options...
bondango Posted December 15, 2006 Share Posted December 15, 2006 Rev Limit of 2500rpms is saftey (limp home) mode on the ECU, you will usually get a high idle aswell. It could possibly be an AFM problem, but check all the vacum pipes etc etc as these can also cuase this problem. In order to clear the ECU you usually need to Remove earth from battery for 24hrs or Press the brake pedal several times to remove any residual power in the system. To check for codes toy need access to the ECU. It in the passenger footwell, pull back the carpet and remove the panel. You'll need to unbolt the ECU as the LED faces away from you. Switch the Ignition on (dont start) Turn the small selector screw clockwise slowly all the way. Wait a few seconds, and screw back again. The LED with start flashing long flash = digit1 short flash = digit 2 so 1 long and 2 short would be a code 12 Codes are : 11 Crankshaft position Sesnor 12 MAF sesnor circuit (air flow meters) 13 Coolant temp sensor circuit 14 Speed sensor circuit 21 Igintion circuit 31 ECU 34 Knock sensor circuit 43 Throttle position circuit 45 Injector leak 51 Ignition Circuit 54 Auto signal to ECU 55 ALL OK If you can, try and find someone with Nissan Datascan or a Conzult, make it all a lot easier. HTH Marty Quote Link to comment Share on other sites More sharing options...
cashpoint Posted December 15, 2006 Share Posted December 15, 2006 With Mine R32 GTR it turned out the limp home was caused by the fuel pump not supplying enough fuel so the air/fuel mix was way out. Replacing the pump solved the problem. Had thought it was AFM too but change then and still the problem was there. Quote Link to comment Share on other sites More sharing options...
cleland Posted December 15, 2006 Share Posted December 15, 2006 My 32 gtr had a simular problem, i plugged the tectom monitor in the port and it showed no voltage on one a/f unit. It was a broken conector in the unit. Quote Link to comment Share on other sites More sharing options...
Suprasteve Posted December 16, 2006 Author Share Posted December 16, 2006 thanks for all your replys, i'll forward the details onto him. Thanks Quote Link to comment Share on other sites More sharing options...
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