Intake VVTs not responding? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

bren5279 · 01-09-2015, 05:43 PM

Getting tired of headscratching so I Remade thread with 100$ reward: http://www.ft86club.com/forums/showt...85#post2085385

steve99 · 01-09-2015, 08:46 PM

After ecu reset or flash you will need to start car and let it idle for about a minute , no throttle. If you dont vvt is disabled.

Do you have any cel codes if ecu is in limp home mode will also likely disable vvt.

could also be issue with your tune.

woode · 01-09-2015, 10:38 PM

Quote:

Originally Posted by steve99

After ecu reset or flash you will need to start car and let it idle for about a minute , no throttle. If you dont vvt is disabled.

Do you have any cel codes if ecu is in limp home mode will also likely disable vvt.

could also be issue with your tune.

^This. I had this happen to me, I stepped on the gas after a flash and my cams weren't moving. I thought something was majorly wrong. Did some research and reset the ECU and was relieved.

bren5279 · 01-10-2015, 12:11 AM

Ohhh ok, Yeah I think that may be it. I only gave it about 30 seconds. Anyone know EXACTLY how long it needs to be?

BUT on the other hand, the Exhaust cam targets are all 0.

Revised the OP

steve99 · 01-10-2015, 01:07 AM

What tune are you using if its a base tune just to start car it may have intake and exhaust vvt all set to zero.

a minute of idle is generally good enough ot until idle settles at 750 rpm.

Boofneenee · 01-10-2015, 01:27 AM

i agree with Steve. is this a fresh flash? did you let it warm up before you went?

bren5279 · 01-10-2015, 11:31 AM

First flash they worked fine, then did the new tweaked flash and they stopped working. flashed it back to the first map and they still arent working.

It wont idle at 750rpm, idles right around 1500 but I cant find any boost leaks, pressures all seem good though.

Kodename47 · 01-10-2015, 12:42 PM

The oil needs to reach over 30C and there's a few other parameters that need to be met before the AVCS systems start to work fully. The engine needs to be at idle too and vehicle speed needs to be 0.

On a cold engine the easiest way is:
Flash, idle for 1 min or so, if it's still not active drive sedately down a road for 30 secs to 1 min, stop the car and allow to idle. The exhaust cams should become active almost immediately.

bren5279 · 01-10-2015, 01:13 PM

ok tried running for 5 minutes, driving around for 5, then reflash, gave it 5 minutes, then tried, still the same thing

, did the same thing

Im stumped, Delicious tuning's stumped, no idea why its doing this...

Kodename47 · 01-10-2015, 01:57 PM

What ROM type have you flashed? I assume you're using ECUtek so are you using the same ROM/ROM ID to log the tune as it could be a mismatch that causes false/incorrect logging?

01-09-2015, 05:43 PM	#1
bren5279 Senior Member Join Date: Apr 2014 Drives: series.blurrr Location: va Posts: 164 Thanks: 14 Thanked 18 Times in 12 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Intake VVTs not responding? Getting tired of headscratching so I Remade thread with 100$ reward: http://www.ft86club.com/forums/showt...85#post2085385 Last edited by bren5279; 01-10-2015 at 01:50 PM.

01-10-2015, 01:27 AM	#6
Boofneenee Go-Kart Enthusiast Join Date: Aug 2013 Drives: Toyota Scion FRS Location: Yup Posts: 800 Thanks: 576 Thanked 309 Times in 188 Posts Mentioned: 9 Post(s) Tagged: 0 Thread(s)	i agree with Steve. is this a fresh flash? did you let it warm up before you went? __________________ FRS Current mods: K&N air filter, OFT, OFH, berk high flow cat front pipe, Q300 exhaust, lighter wheels

01-10-2015, 12:42 PM	#8
Kodename47 Senior Member Join Date: Oct 2012 Drives: UK GT86 Location: UK Posts: 3,040 Thanks: 185 Thanked 1,633 Times in 1,113 Posts Mentioned: 156 Post(s) Tagged: 1 Thread(s)	The oil needs to reach over 30C and there's a few other parameters that need to be met before the AVCS systems start to work fully. The engine needs to be at idle too and vehicle speed needs to be 0. On a cold engine the easiest way is: Flash, idle for 1 min or so, if it's still not active drive sedately down a road for 30 secs to 1 min, stop the car and allow to idle. The exhaust cams should become active almost immediately. __________________ .: Stealth 86 :. Abbey Motorsport/K47 Tuned Sprintex 210 Supercharger Kodename 47 DJ: Soundcloud / Instagram / Facebook

01-10-2015, 01:57 PM	#10
Kodename47 Senior Member Join Date: Oct 2012 Drives: UK GT86 Location: UK Posts: 3,040 Thanks: 185 Thanked 1,633 Times in 1,113 Posts Mentioned: 156 Post(s) Tagged: 1 Thread(s)	What ROM type have you flashed? I assume you're using ECUtek so are you using the same ROM/ROM ID to log the tune as it could be a mismatch that causes false/incorrect logging? __________________ .: Stealth 86 :. Abbey Motorsport/K47 Tuned Sprintex 210 Supercharger Kodename 47 DJ: Soundcloud / Instagram / Facebook

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01-09-2015, 08:46 PM	#2
steve99 Banned Join Date: Dec 2013 Drives: FT86 Location: Australia Posts: 7,996 Thanks: 1,035 Thanked 4,994 Times in 2,984 Posts Mentioned: 598 Post(s) Tagged: 2 Thread(s)	After ecu reset or flash you will need to start car and let it idle for about a minute , no throttle. If you dont vvt is disabled. Do you have any cel codes if ecu is in limp home mode will also likely disable vvt. could also be issue with your tune.

01-10-2015, 12:11 AM	#4
bren5279 Senior Member Join Date: Apr 2014 Drives: series.blurrr Location: va Posts: 164 Thanks: 14 Thanked 18 Times in 12 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Ohhh ok, Yeah I think that may be it. I only gave it about 30 seconds. Anyone know EXACTLY how long it needs to be? BUT on the other hand, the Exhaust cam targets are all 0. Revised the OP

01-10-2015, 01:07 AM	#5
steve99 Banned Join Date: Dec 2013 Drives: FT86 Location: Australia Posts: 7,996 Thanks: 1,035 Thanked 4,994 Times in 2,984 Posts Mentioned: 598 Post(s) Tagged: 2 Thread(s)	What tune are you using if its a base tune just to start car it may have intake and exhaust vvt all set to zero. a minute of idle is generally good enough ot until idle settles at 750 rpm.

01-10-2015, 11:31 AM	#7
bren5279 Senior Member Join Date: Apr 2014 Drives: series.blurrr Location: va Posts: 164 Thanks: 14 Thanked 18 Times in 12 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	First flash they worked fine, then did the new tweaked flash and they stopped working. flashed it back to the first map and they still arent working. It wont idle at 750rpm, idles right around 1500 but I cant find any boost leaks, pressures all seem good though.

01-10-2015, 01:13 PM	#9
bren5279 Senior Member Join Date: Apr 2014 Drives: series.blurrr Location: va Posts: 164 Thanks: 14 Thanked 18 Times in 12 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	ok tried running for 5 minutes, driving around for 5, then reflash, gave it 5 minutes, then tried, still the same thing , did the same thing Im stumped, Delicious tuning's stumped, no idea why its doing this...

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