ka24de rev hangs at 1.5k - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

kleng · 08-22-2013, 08:30 PM

at idle itll stay at 700-1k, but once i gas the car itll rise up normaly the when it drops back down itll hang at 1.5k for like 1-3 sec. ive clean the iacv alfready, ive check the maf, the car has been egr deleted before i bought it. Would that be the cause to the rev hang. Car also has brand new clutch master 6 puck(installed by previous owner). i doubt the clutch would be the cause of the rev hang because it even hangs when revving the car while its in neutral.

Rich260z · 08-22-2013, 08:35 PM

Possibly an auto ecu. Was it 5 speed swapped? because my auto to 5 speed swap does that.

kleng · 08-22-2013, 08:45 PM

Yes it was an auto swap. i will have to check the ecu.

kleng · 08-22-2013, 08:46 PM

How will I know it's an auto ecu?

Thedriftbadger · 08-22-2013, 09:15 PM

Mine does that too except it's more around 1300. Original 5 speed car

kruked · 08-23-2013, 06:01 AM

Most ka that have been EGR deleted, the RPMs sit around 1300.

Take a picture of the ECU and post it here. W/ the female socket facing you, I want a picture of the bottom, right corner. I'll be able to tell you if it's auto or manual.

SkittlesA7X · 08-23-2013, 09:16 AM

Mine does the same kind of thing but in between 1.1k and 2k rpms it jumps. It will slow down normally and then act like I'm giving it a bit of gas and hang for a bit and then it will start to slow down again. Its factory 5 speed but ecu might have been switched out. It doesn't always do it though. Sometimes it runs perfectly fine. I have no idea what it could be. I went over all of my vacuum lines and I found a lot of leaks in my EGR system but I replaced them all.

Frank_Jaeger · 08-23-2013, 09:21 AM

Quote:

Originally Posted by kruked

Most ka that have been EGR deleted, the RPMs sit around 1300.

Mine doesn't, and I've never heard of EGR removal affecting idle if properly sealed. Why would it affect idle?

Tristan Barton · 09-03-2013, 09:46 PM

Mine does the same thing, it's a auto to manual swap as well and it pauses at like 1500rpm exactly.

Ayy_mo · 09-04-2013, 03:21 AM

Auto ecu sounds like the problem.

08-22-2013, 08:30 PM	#1
kleng Join Date: Jan 2013 Location: georgia Posts: 4 Trader Rating: (0) Feedback Score: 0 reviews	ka24de rev hangs at 1.5k at idle itll stay at 700-1k, but once i gas the car itll rise up normaly the when it drops back down itll hang at 1.5k for like 1-3 sec. ive clean the iacv alfready, ive check the maf, the car has been egr deleted before i bought it. Would that be the cause to the rev hang. Car also has brand new clutch master 6 puck(installed by previous owner). i doubt the clutch would be the cause of the rev hang because it even hangs when revving the car while its in neutral.

08-23-2013, 06:01 AM	#6
kruked Nissanaholic! Join Date: Feb 2012 Location: someone's sisters' pants Posts: 2,288 Trader Rating: (37) Feedback Score: 37 reviews	Most ka that have been EGR deleted, the RPMs sit around 1300. Take a picture of the ECU and post it here. W/ the female socket facing you, I want a picture of the bottom, right corner. I'll be able to tell you if it's auto or manual. __________________ I like my bikes how I like my b¡tches...naked! 2014 Triumph Street Triple

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08-22-2013, 08:35 PM	#2
Rich260z Zilvia Addict Join Date: Apr 2011 Location: Burbank, CA Posts: 621 Trader Rating: (8) Feedback Score: 8 reviews	Possibly an auto ecu. Was it 5 speed swapped? because my auto to 5 speed swap does that.

08-22-2013, 08:45 PM	#3
kleng Join Date: Jan 2013 Location: georgia Posts: 4 Trader Rating: (0) Feedback Score: 0 reviews	Yes it was an auto swap. i will have to check the ecu.

08-22-2013, 08:46 PM	#4
kleng Join Date: Jan 2013 Location: georgia Posts: 4 Trader Rating: (0) Feedback Score: 0 reviews	How will I know it's an auto ecu?

08-22-2013, 09:15 PM	#5
Thedriftbadger Zilvia Junkie Join Date: Jun 2013 Location: ontario Posts: 305 Trader Rating: (0) Feedback Score: 0 reviews	Mine does that too except it's more around 1300. Original 5 speed car

08-23-2013, 09:16 AM	#7
SkittlesA7X Join Date: Feb 2013 Location: Porterville Age: 28 Posts: 1 Trader Rating: (2) Feedback Score: 2 reviews	Mine does the same kind of thing but in between 1.1k and 2k rpms it jumps. It will slow down normally and then act like I'm giving it a bit of gas and hang for a bit and then it will start to slow down again. Its factory 5 speed but ecu might have been switched out. It doesn't always do it though. Sometimes it runs perfectly fine. I have no idea what it could be. I went over all of my vacuum lines and I found a lot of leaks in my EGR system but I replaced them all.

09-03-2013, 09:46 PM	#9
Tristan Barton Join Date: Jan 2013 Location: Washington Posts: 8 Trader Rating: (0) Feedback Score: 0 reviews	Mine does the same thing, it's a auto to manual swap as well and it pauses at like 1500rpm exactly.