RPM unstable... - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

AllenRPS13 · 07-08-2007, 07:27 AM

my KA S13 recently had a problem, the RPM is really unstable... the car shakes like hell and sometimes it will die because of the RPM drop to under 300... any of u guys know what problem is that? any suggestion will be appreciate, thanks.

Evil240 · 07-08-2007, 07:45 AM

maf or clogged injection maybe? does it drag ass when driving? or just during idle?

DemonKiwi · 07-08-2007, 08:22 AM

I have the same problem in my SR, Every time I come to stop and push down on the clutch it will bogg down and try to kill itself. Sometimes the car actually dies out on me. I thought maybe MAF or IACV, but my SR is also running very rich, it backfires a lot, and I think maybe I am flooding the engine with fuel. Sorry to hijack but I kinda need to know what it could be as well. I havent had time to try anything out, but I dont wanna go pay for something expensive and it not help.

Thanks and sorry Allen for the threadjack

**Phlip** · 07-08-2007, 08:27 AM

When my car was doing it, it was my IACV, I suggest cleaning it first and if that doesn't do it, then replace it, because it is expen$ive.

slothonaleash · 07-08-2007, 08:50 AM

check for vac leaks

AllenRPS13 · 07-08-2007, 09:40 AM

Quote:

Originally Posted by Evil240

maf or clogged injection maybe? does it drag ass when driving? or just during idle?

not just idle... i dun really know what u mean by drag ass, but it happen also when i am driving...

AllenRPS13 · 07-08-2007, 09:41 AM

i am thinking about MAF also, but i will try all the suggestions later, thanks for giving me the ideas, i appreciate them!!!

07-08-2007, 07:27 AM	#1
AllenRPS13 Zilvia FREAK! Join Date: Sep 2004 Location: Bay Area (East Bay) Age: 41 Posts: 1,294 Trader Rating: (0) Feedback Score: 0 reviews	RPM unstable... my KA S13 recently had a problem, the RPM is really unstable... the car shakes like hell and sometimes it will die because of the RPM drop to under 300... any of u guys know what problem is that? any suggestion will be appreciate, thanks. __________________ ~小アレンのリベリオン~ いくせ, 勝負た! 轟こう, オレのKRMS13!!! オレの得意技！蹴り進入！角度の少ないドリフト！

07-08-2007, 08:27 AM	#4
Phlip Yes, I look like that Join Date: Mar 2002 Location: In my supervillain's lair Posts: 27,980 Trader Rating: (19) Rides Gallery: Phlip Feedback Score: 19 reviews	When my car was doing it, it was my IACV, I suggest cleaning it first and if that doesn't do it, then replace it, because it is expen$ive. __________________ Weirdo And I write too!

07-08-2007, 09:41 AM	#7
AllenRPS13 Zilvia FREAK! Join Date: Sep 2004 Location: Bay Area (East Bay) Age: 41 Posts: 1,294 Trader Rating: (0) Feedback Score: 0 reviews	i am thinking about MAF also, but i will try all the suggestions later, thanks for giving me the ideas, i appreciate them!!! __________________ ~小アレンのリベリオン~ いくせ, 勝負た! 轟こう, オレのKRMS13!!! オレの得意技！蹴り進入！角度の少ないドリフト！

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07-08-2007, 07:45 AM	#2
Evil240 Zilvia Junkie Join Date: Oct 2005 Location: california Posts: 318 Trader Rating: (0) Feedback Score: 0 reviews	maf or clogged injection maybe? does it drag ass when driving? or just during idle?

07-08-2007, 08:22 AM	#3
DemonKiwi Join Date: Dec 2006 Location: Franklin Posts: 16 Trader Rating: (0) Feedback Score: 0 reviews	I have the same problem in my SR, Every time I come to stop and push down on the clutch it will bogg down and try to kill itself. Sometimes the car actually dies out on me. I thought maybe MAF or IACV, but my SR is also running very rich, it backfires a lot, and I think maybe I am flooding the engine with fuel. Sorry to hijack but I kinda need to know what it could be as well. I havent had time to try anything out, but I dont wanna go pay for something expensive and it not help. Thanks and sorry Allen for the threadjack

07-08-2007, 08:50 AM	#5
slothonaleash Zilvia Addict Join Date: Jan 2007 Location: Columbus, Ohio Age: 33 Posts: 745 Trader Rating: (4) Feedback Score: 4 reviews	check for vac leaks