Nuno Posted March 11, 2010 Share Posted March 11, 2010 I have noticed a new problem yesterday. When I put put my foot down to accelerate the car starts to deccelerate for 1-2secs when it reaches around 4-5000rpm, it slows down by 5-10mph and drops 500rpm, then after continues to accelerate. 1st gear is fine but it only happens with 2nd gear onwards. Gear changing is not a problem, only the decceleration when I don't want it to deccelerate. Anyone know what's wrong or had the same problem and how I can rectify it? Quote Link to comment Share on other sites More sharing options...
jacr87 Posted March 11, 2010 Share Posted March 11, 2010 gear is fine but it only happens with 2nd gear onwards. Is there any lights thrown up on you dash? Secondly have you tried resetting your ECU or using the sequence to activate the fault codes? Quote Link to comment Share on other sites More sharing options...
M13KYF Posted March 11, 2010 Share Posted March 11, 2010 +1 Quote Link to comment Share on other sites More sharing options...
Nuno Posted March 11, 2010 Author Share Posted March 11, 2010 No there aren't any warning lights. I'll try to reset the ecu once I figure out how to do it to see if it helps. What do you mean by sequence to activate the fault code? I also read the sticking throttle thread. Would using a fuel additive or cleaning the throttle body help in this situation? Quote Link to comment Share on other sites More sharing options...
jacr87 Posted March 11, 2010 Share Posted March 11, 2010 No there aren't any warning lights. I'll try to reset the ecu once I figure out how to do it to see if it helps. What do you mean by sequence to activate the fault code? I also read the sticking throttle thread. Would using a fuel additive or cleaning the throttle body help in this situation? See this link for the fault code sequence and resseting procedure. http://forums.nicoclub.com/zerothread/182298 Is your car modified if so what is done? Failing that there is no gear indicators on this car and your Z could be running on limp mode Which by doing the fault code sequence I hope you get something to appear failing that It could be A trip to the Nissan Dealership mate. i.e Does the car have a CAI (cold air induction kit) or a D1 spec throttle controller. It seems the throttle could be fine but you are not gaining the right mixture of air and fuel. Quote Link to comment Share on other sites More sharing options...
M13KYF Posted March 11, 2010 Share Posted March 11, 2010 bigger lists of codes here viewtopic.php?f=17&t=21762 Quote Link to comment Share on other sites More sharing options...
cookiemonster Posted March 11, 2010 Share Posted March 11, 2010 I noticed when i put the D1 throttle controller on that if the connection for the accelerator pedal isnt 100% connected properly you can feel a drop in speed occasionally when cruising and more so when accelerting. Could possibly be this? Quote Link to comment Share on other sites More sharing options...
CaptainSensible Posted March 11, 2010 Share Posted March 11, 2010 This might be stating the obvious, but it's not the TCS kicking in? Quote Link to comment Share on other sites More sharing options...
H5 Posted March 11, 2010 Share Posted March 11, 2010 And it is definitely in gear?? Sorry if that sounds insulting, not meant to, just whether the car is going into gear properly? Quote Link to comment Share on other sites More sharing options...
narcotix Posted March 11, 2010 Share Posted March 11, 2010 This might be stating the obvious, but it's not the TCS kicking in? +1 LoL ... was just about to ask the same question ... Quote Link to comment Share on other sites More sharing options...
Nuno Posted March 14, 2010 Author Share Posted March 14, 2010 Thanks for the replies. The car has not been modified and yes it's in gear correctly. I have tried to reset the ecu via the manual method but I can't seem to get the cel light to blink, so it seems as though it's not being done properly but I hav follwed the steps correctly. Is there any other way to do it myself without any equipment or will I have to take it to the dealer to reset the ecu? Quote Link to comment Share on other sites More sharing options...
jacr87 Posted March 15, 2010 Share Posted March 15, 2010 It takes practice mate. I would keep trying as you will get hammered by the dealership for getting this done. Quote Link to comment Share on other sites More sharing options...
nicon2k Posted March 15, 2010 Share Posted March 15, 2010 Could it be a fault with your shoes? Not pressing both pedels at the same time? Quote Link to comment Share on other sites More sharing options...
M13KYF Posted March 15, 2010 Share Posted March 15, 2010 timing is critical in doing the ecu reset Quote Link to comment Share on other sites More sharing options...
Nuno Posted March 16, 2010 Author Share Posted March 16, 2010 I managed to complete the first part, buy am confused with the second part.... " Without Consult Turn ignition On. Turn diagnostic mode selector on ECU fully clockwise and wait until inspection lamps flash. #Number of flashes displayed indicates corresponding mode. Note number of flashes, then immediately turn diagnostic mode selector fully counterclockwise." where is the diagnostic mode selector and ecu? Quote Link to comment Share on other sites More sharing options...
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