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View Full Version : RPM's drop when clutch is in...pls HELP!

kansais13
10-22-2007, 03:43 PM
Hey everyone, I got this issue with my KA24DE. It seems that everytime i put my clutch in all the way down, the RPM's drop all the way to like 100 to 200 (it all most stalls on me) like when I come to a stop or slow down and ease over speed bumpes and it's engaged all the way, they just drop. The problem happens often but not constantly so im a little confused...please let me know what you think this could be.
nissandr1ft
10-22-2007, 04:14 PM
It's a pretty common thing on our cars, if you put an auto ECU in you won't have that problem.
adjaga500
10-22-2007, 04:18 PM
i have that same problem.. my friend told me to check the air regulator. i haven't had the chance to check anything though..

It's a pretty common thing on our cars, if you put an auto ECU in you won't have that problem.

would this cause a problem in the long run?
nissandr1ft
10-22-2007, 04:21 PM
I've been running the auto ECU for 2-3 years without problems, and it gets rid of the 115mph speed limiter. The car does tend to idle about 1100 or so for a sec, and then idles down. I've had the idle drop like that multiple times, on multiple motors, in multiple 240's. I've seafoamed, cleaned iacv valve, and about everything I could, and it still did it with the 5sp ECU.
kansais13
10-22-2007, 04:30 PM
hmmm I asked my friend this same thing and he said it could be the IDCV also and I just need to clean it or replace it. Why would something like this be common its kind of serious if the car stalls ya know...I appreciate your help.
Neejay
01-11-2008, 01:00 PM
I've been running the auto ECU for 2-3 years without problems, and it gets rid of the 115mph speed limiter. The car does tend to idle about 1100 or so for a sec, and then idles down. I've had the idle drop like that multiple times, on multiple motors, in multiple 240's. I've seafoamed, cleaned iacv valve, and about everything I could, and it still did it with the 5sp ECU.
Sorry to bump this up, but I've been getting the same thing recently. Was this done on a s13 or s14? Or does it matter?

If this will solve my problem, I'll gladly do it. Isn't there a problem with cold starts after you do this? Seems like I remember reading a negative effect.