Quote:
Originally Posted by jkoch53102
Thanks for general info. Plugs and packs good. Replaced MAF and IAC. Still needs to be retaught and will repost after this is done. Still has same acceleration issue upon test drive.
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IAC just for idle adj
Have you measured and/or diagnosed Throttle Pos sensor TPS for linear resistance while turning? The bits are structurally different but u get the idea for test possibilities from here:
http://www.cardomain.com/ride/748507...maxima/page-6/
There are two features 'changing' between 2-3k.
- The O2 sensor 'cant follow' in full exhaust flow to higher rpm, and thus 'only' MAF & rev sensor is used for input. This happens somewhere after 2.5k. If supply voltage or their signal is poor, then the problems may start to appear 'at 2.5k'. Check chargeV at batt (min 14.2V), then at ECU ... also while revving. Voltage at MAF. Start cleaning wiring groundings/contacts...
- if critical sensor fails, the 2.2k rpm ceiling
Note that you may get multiple bad spare MAF's ... Basic test is just to unplug, but here it wont help as that causes the 2.2k rpm limit.