Rev problem

[BoneDizzle]

I, obviously, have a problem with my car. It is a 90 240sx the the ka24e. In every gear, the car doesnt rev past 5000 rpms. I dont know why this is. It just bounces off 5000 like it is the rev limiter, but redline isnt till 6500. I dont think my speedo is off by 1500 because that would mean i am idling at 2300 and that just isnt so. I am new to the board and i tried searching back threads, but with aol it is terribly slow. any help would be great.thanks - Mike

[BoneDizzle]

No one knows the answer to my problem?

[Tsukai240]

i'v read on this site that it when the car is in safety mode it limmits your revs.

[yellow_jacket]

The rev limiter will kick in under two conditions

1) you have hit redline2) you have hit the maximum governed speed.

More than likely your fifth or fourth gear sensor is bad and is telling the transmission you are in that particular gear, thus the ecu thinks the car is going 110(or whatever the speed is) and it rev limits.

[BoneDizzle]

Wouldn't safety mode produce a code? There are no codes shown.

[xxtriiadzxx]

yo bonedizzle im having the same *** problem.. i have a 93 nissan 240sx and my rev is cutting off at 5k at every gear.. i dont know whats wrong with it. I tried swapin ecu and taking it to the shop and they cant seem to help..I had a 89 Single cam 240sx b4 and my rev was up to 6.5k and was pulling nice..but im have no idea why its doin that if anyone can help me and bonedizzle with this problem...

[Touchdown038]

I'm pretty sure the sensor is on the transmission.

[BoneDizzle]

yeah i know where the sensors are. I will check them out to see if i can tell if one is bad. Anymore opinions would be great

[MyCarIsWack]

just remove the 5th gear sensor, it fixes it, tape it off to another sensor or something

all u do is pull it out

[89240sxdude]

are u sure u checked the codes correctly it goes liek this. key on, dial on, the leds will blink twice then three times and shut the dial off then it will show the code. if theres nothing wrong both will flash 5 times. if there is a code take note of it and respont on this tread and ill tell u what it is and to erase the code after this < u start the car then turn the dial on 2 seconds, dial off, car off, car on and the code will be erased

[xxtriiadzxx]

yo i took out the 4th and 5th gear sensor today and it works..no more rev cutz..my car revs all the way to 7k now mad nice..

[MyCarIsWack]

good job

[BoneDizzle]

Can someone pinpoint the sensors for me? that would be great. It is raining today so i was not able to even look for them.

[xxtriiadzxx]

im not sure but when i got under the transmission there was 3 plugs i unplugged the 1st one and the last one and left the middle one plugged..then got some electric tape and taped up the ends of the plugs then i reved my engine up and it went all the way up to 7k...so im guessing i removed the right sensors since everything was running right hehe..i kinda knew it was sumething under the transmission causing the rev problem but everyone kept saying no..o well thats history for me..no more puttin back power of my 240...it now literally goes sideways when i double clutch on 1st gear up to 6k then i shift at 7k and it chirps again...ahhh the power this car has was sealed now everything is let looseeeeeeee hehee

[Dorifto Sil80]

I'm having the same problem with the rev limiter kicking in at 5k RPM, my friend told me just to reset the ECU by unhooking the battery for a good hour, would this really work?