SR20 stall when braking/turning + dropping throttle - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

swisskid · 08-17-2014, 06:32 PM

So if I have the car at like 3k-4k then drop the throttle (clutch in, no more gas), and am braking (sometimes turning + braking) it'll sometimes stall out, like the engine doesn't catch itself. I'm not sure what it is, the only issues I had in the past with the car were power issues with a bad alternator. Could my battery be screwed, and causing this (doesn't make much sense to me)? Or is this something else obvious that I'm missing?

Kingtal0n · 08-17-2014, 08:01 PM

bypass valve- recirculate it. Or delete it. Or tighten it.

If you are non turbo then lol. Check your iacv setting in that case (there is a way to adjust low idle speed with a screwdriver)

swisskid · 08-18-2014, 01:17 AM

I think you're 100% right with the bypass valve. Looking at other symptoms, they line up perfectly. This is my first turbo car, and i'm googling around hunting for answers, but how should I fix this best? I consider myself all stock SR20DET, minus the boost solenoid and some of the EGR stuff, but there's definitely things I could have missed during the swap.
What should I hunt for under the hood, and how should I best fix this to keep the car running right?

swisskid · 08-18-2014, 01:19 AM

Hurp, just realized Bypass valve == Blow Off Valve. Are the stock ones famous for leaking? Or is it more likely that I need to replace a hose?

swisskid · 08-18-2014, 02:11 PM

More research, so I might be a little less of an idiot now. I am currently set up to recirculate, but half the rubber hoses are crust as hell. They might be leaking. I'll try replacing the hoses from intercooler -> BOV and BOV -> intake. There's never harm in new hoses!

08-17-2014, 06:32 PM	#1
swisskid Join Date: Jan 2014 Location: Agoura, CA Age: 27 Posts: 16 Trader Rating: (0) Feedback Score: 0 reviews	SR20 stall when braking/turning + dropping throttle So if I have the car at like 3k-4k then drop the throttle (clutch in, no more gas), and am braking (sometimes turning + braking) it'll sometimes stall out, like the engine doesn't catch itself. I'm not sure what it is, the only issues I had in the past with the car were power issues with a bad alternator. Could my battery be screwed, and causing this (doesn't make much sense to me)? Or is this something else obvious that I'm missing?

08-17-2014, 08:01 PM	#2
Kingtal0n Post Whore! Join Date: Jul 2005 Location: South Florida Age: 38 Posts: 4,648 Trader Rating: (17) Feedback Score: 17 reviews	bypass valve- recirculate it. Or delete it. Or tighten it. If you are non turbo then lol. Check your iacv setting in that case (there is a way to adjust low idle speed with a screwdriver) __________________ 5.3/4l80e/turbo 240sx playthrough: https://tinyurl.com/turbo240

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08-18-2014, 01:17 AM	#3
swisskid Join Date: Jan 2014 Location: Agoura, CA Age: 27 Posts: 16 Trader Rating: (0) Feedback Score: 0 reviews	I think you're 100% right with the bypass valve. Looking at other symptoms, they line up perfectly. This is my first turbo car, and i'm googling around hunting for answers, but how should I fix this best? I consider myself all stock SR20DET, minus the boost solenoid and some of the EGR stuff, but there's definitely things I could have missed during the swap. What should I hunt for under the hood, and how should I best fix this to keep the car running right?

08-18-2014, 01:19 AM	#4
swisskid Join Date: Jan 2014 Location: Agoura, CA Age: 27 Posts: 16 Trader Rating: (0) Feedback Score: 0 reviews	Hurp, just realized Bypass valve == Blow Off Valve. Are the stock ones famous for leaking? Or is it more likely that I need to replace a hose?

08-18-2014, 02:11 PM	#5
swisskid Join Date: Jan 2014 Location: Agoura, CA Age: 27 Posts: 16 Trader Rating: (0) Feedback Score: 0 reviews	More research, so I might be a little less of an idiot now. I am currently set up to recirculate, but half the rubber hoses are crust as hell. They might be leaking. I'll try replacing the hoses from intercooler -> BOV and BOV -> intake. There's never harm in new hoses!