Cars Starting To Sputter At 2500 Rpms And Wont Go Any Higher. Major Lost Of Power, Anyone Know What It Might Be?

 

maf sensor or ignition coils/plugs, check if the MAF is plugged in. Does it turn off too?

 

I have noticed the same lack of power at exactly 2500rpm - with Overdrive off the car just slowly gains speed in 3 gear (auto)

with Overdrive on - it downshifts to 3rd and it still seems like its lacking power - No Check engine light

all the maintenance is up to date....

Nick.

 

found out what it is, MAF damn, i cant find one cheaper than 100. thanks to auto zone, i didnt have to pay 80 for diagnostic at a mechanic.

 

also maybe spark plugs or knock sensor

 

its the mafs...check the wires and connection...i thought i had a bad mafs, but it was the power wire leading into the connector

 

Also check a salvage yard. I recently bought one for my friends 89se for $50. I'm assuming a 4th gen isnt much more if any.

 

fourth gens maf , new is 219 @ autozone.

 

you can try rewiring it, I don't know about max but other nissans tend to get a bad ground and totaly mess up. Unplug it and plug it back in, if it doesn't work try to rewire the ground (I don't remember the color that nissan likes to use). If that doesn't help go to the junkyard.