RPM's drop when clutch is in...pls HELP! - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

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..

Quote:

Originally Posted by nissandr1ft

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

Quote:

Originally Posted by nissandr1ft

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.

10-22-2007, 03:43 PM	#1
kansais13 Join Date: Aug 2007 Location: socal Posts: 7 Trader Rating: (0) Feedback Score: 0 reviews	RPM's drop when clutch is in...pls HELP! 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.

10-22-2007, 04:14 PM	#2
nissandr1ft Zilvia Member Join Date: Sep 2004 Location: Clayton, NC Age: 41 Posts: 284 Trader Rating: (0) Feedback Score: 0 reviews	It's a pretty common thing on our cars, if you put an auto ECU in you won't have that problem. __________________ ------------------------- www.carolinanissans.com -------------------------

10-22-2007, 04:21 PM	#4
nissandr1ft Zilvia Member Join Date: Sep 2004 Location: Clayton, NC Age: 41 Posts: 284 Trader Rating: (0) Feedback Score: 0 reviews	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. __________________ ------------------------- www.carolinanissans.com -------------------------

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10-22-2007, 04:30 PM	#5
kansais13 Join Date: Aug 2007 Location: socal Posts: 7 Trader Rating: (0) Feedback Score: 0 reviews	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.