akeizm Posted October 8, 2003 Share Posted October 8, 2003 Hello all, I seem to be having problems with my 260z. When I accelerate hard, the car jumps. It would accelerate hard, then all of a sudden cut off power for a split second then power on again (this keep continuing if i keep accelerating). This usually happens around 3000 to 4000 revs in first and second gear. I have replaced the spark plugs, spark plug leads and fuel filter. I also don't have any points so that can't be my problem either. Any susggestions? Thanks akeizm. Quote Link to comment Share on other sites More sharing options...
akeizm Posted October 11, 2003 Author Share Posted October 11, 2003 wooooooooooooo, i still havn't fixed it Quote Link to comment Share on other sites More sharing options...
Tim240z Posted October 11, 2003 Share Posted October 11, 2003 How's your coil? Tim Quote Link to comment Share on other sites More sharing options...
akeizm Posted October 13, 2003 Author Share Posted October 13, 2003 I will have to check that when I get home, but I didn't think of it heh. Quote Link to comment Share on other sites More sharing options...
akeizm Posted October 18, 2003 Author Share Posted October 18, 2003 O and I forgot to mention I have no points, electronic ignition. Quote Link to comment Share on other sites More sharing options...
datsunlover Posted November 11, 2003 Share Posted November 11, 2003 Are you running Carbs or fuel injection? If its FI, the computer is shuting it down because there is a sensor problem. Its a 'limp' mode. If its Carbs, sorry man.. I don't know. Quote Link to comment Share on other sites More sharing options...
Miles Posted November 16, 2003 Share Posted November 16, 2003 I had this same problem on my 240z. It was due to a loose/corroded wire going from the bias resistor to the coil. I knew it was this particular to look for because each time the engine quit the tach would go to zero instantly indicating it had been cut out of the circuit. I replaced the connector and no more cutting out. Check your ignituion wiring. Miles Quote Link to comment Share on other sites More sharing options...
Tekira Posted December 19, 2003 Share Posted December 19, 2003 Yeah i had the same problem with my 260z 2+2. i took the car out after about 5 years of no running and it got really jumpy. turned out the gas from sitting in the carbs for so long had broken the parts down. i got a real rich mixture. I just replaced my su's with triple mikunis and the car runs better than ever. Like datsunlover said if you got fuel inject then "limp" when something is amiss with the ecu. If you got carb like me check the coil and connections and if the car running rich it will jump and smell like gas and smoke. i dont know what else to tell you Quote Link to comment Share on other sites More sharing options...
datsunlover Posted December 19, 2003 Share Posted December 19, 2003 oh yah, if you are running the EFI, then the problem is most likely the AFM. Thats what usually goes. If its good, then the TVS (Throttle valve switch) Quote Link to comment Share on other sites More sharing options...
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