Gas Pedal Delay

wstar · 08-03-2012, 10:20 AM

The only sane way to disable VVEL is to replace the heads. VVEL is an oil-pressure-driven mechanical system with an eccentric shaft, etc. The electronic servo just controls the angle between the shafts. Somehow disabling the ECU's control of it would probably be catastrophic.

Have you gone over all the basic maintenance/inspection stuff? PCV system, air filters (not clogged, not leaking air around them from a bad seal, etc?), clean the MAF sensors, reset the idle air volume, check for exhaust / intake tract leaks, etc. There are a lot of "little" things that can adversely affect engine performance.

kenny's 370z · 08-03-2012, 11:03 AM

the only thing i havnt done yet is to replace the spark plugs.

edit;on lunch today,i took the grounds back off the throttle bodies and i believe the grounds were hurting more than helping.this car is like a woman.moody as hell lol

Compdoc777 · 08-03-2012, 12:13 PM

Quote:

Originally Posted by wstar

The only sane way to disable VVEL is to replace the heads. VVEL is an oil-pressure-driven mechanical system with an eccentric shaft, etc. The electronic servo just controls the angle between the shafts. Somehow disabling the ECU's control of it would probably be catastrophic.

Have you gone over all the basic maintenance/inspection stuff? PCV system, air filters (not clogged, not leaking air around them from a bad seal, etc?), clean the MAF sensors, reset the idle air volume, check for exhaust / intake tract leaks, etc. There are a lot of "little" things that can adversely affect engine performance.

You can control when the VVEL kicks at what rpm. That will affect fuel efficiency, but give you more power lower in the band.

DIGItonium · 08-03-2012, 02:33 PM

Quote:

Originally Posted by kenny's 370z

edit;on lunch today,i took the grounds back off the throttle bodies and i believe the grounds were hurting more than helping.this car is like a woman.moody as hell lol

Your car may have cooled down with the time taken to remove the ground connections.

Quote:

Originally Posted by Compdoc777

You can control when the VVEL kicks at what rpm. That will affect fuel efficiency, but give you more power lower in the band.

Not sure what you mean here. VVEL is always active. It's the sole mechanism for controlling throttle. The butterflies are still there, but are always open.

wstar · 08-03-2012, 05:36 PM

^ VVEL is always active, it's pretty integral to how the ECU operates this engine (VVEL != VTEC). I'm pretty sure the normal throttle butterflies *do* vary in some situations though, they're not completely static.

kenny's 370z · 08-03-2012, 09:20 PM

i took that sensor out that is connected to the vvel motor that goes in the top back side of the im.it was oily.not dripping, but oily.so when you clean the maf sensors,hit that one too.

i also found this interesting;
http://www.allanglesdesign.com/porta.../CCV_Bible.pdf

IcedZ · 08-04-2012, 12:52 AM

Quote:

Originally Posted by kenny's 370z

i took that sensor out that is connected to the vvel motor that goes in the top back side of the im.it was oily.not dripping, but oily.so when you clean the maf sensors,hit that one too.

Interesting.. I never looked at that. Did it make any difference?

kenny's 370z · 08-04-2012, 12:33 PM

Quote:

Originally Posted by IcedZ

Interesting.. I never looked at that. Did it make any difference?

no ! ive had it with this car and i am ready to get rid of it.worse car i have ever owned since a caliber with a cvt tranny

edit; i had a bad map sensor with no codes.fixed and operating perfectly

Compdoc777 · 08-04-2012, 07:59 AM

Quote:

Originally Posted by wstar

^ VVEL is always active, it's pretty integral to how the ECU operates this engine (VVEL != VTEC). I'm pretty sure the normal throttle butterflies *do* vary in some situations though, they're not completely static.

VVEL is not like Vtec. VVEL controls valve timing on intake and exhaust. VTec controls the valves in Honda you have a extra lobe on the cam when activated these open all the valves will open using this hotter lobe on the cam. Now i-Vtec adds the VVEL to the mix with variable valve timing to the intake and exhuast for better performance through the RPM band.

7419sundat · 08-04-2012, 02:16 PM

Quote:

Originally Posted by Compdoc777

VVEL is not like Vtec. VVEL controls valve timing on intake and exhaust. VTec controls the valves in Honda you have a extra lobe on the cam when activated these open all the valves will open using this hotter lobe on the cam. Now i-Vtec adds the VVEL to the mix with variable valve timing to the intake and exhuast for better performance through the RPM band.

This engine only uses a regular camshaft on the exhaust valves.

08-03-2012, 10:20 AM	#1 (permalink)
wstar A True Z Fanatic Join Date: Mar 2009 Location: Houston, TX Posts: 4,024 Drives: too slow Rep Power: 3596	The only sane way to disable VVEL is to replace the heads. VVEL is an oil-pressure-driven mechanical system with an eccentric shaft, etc. The electronic servo just controls the angle between the shafts. Somehow disabling the ECU's control of it would probably be catastrophic. Have you gone over all the basic maintenance/inspection stuff? PCV system, air filters (not clogged, not leaking air around them from a bad seal, etc?), clean the MAF sensors, reset the idle air volume, check for exhaust / intake tract leaks, etc. There are a lot of "little" things that can adversely affect engine performance. __________________ 7AT Track Car! Journal thread / Car setup details Last edited by wstar; 08-03-2012 at 10:22 AM.

08-03-2012, 11:03 AM	#2 (permalink)
kenny's 370z Base Member Join Date: Jun 2012 Location: TN Age: 60 Posts: 243 Drives: 2012 frontier sv v6 Rep Power: 14	the only thing i havnt done yet is to replace the spark plugs. edit;on lunch today,i took the grounds back off the throttle bodies and i believe the grounds were hurting more than helping.this car is like a woman.moody as hell lol Last edited by kenny's 370z; 08-03-2012 at 12:47 PM.

08-03-2012, 05:36 PM	#5 (permalink)
wstar A True Z Fanatic Join Date: Mar 2009 Location: Houston, TX Posts: 4,024 Drives: too slow Rep Power: 3596	^ VVEL is always active, it's pretty integral to how the ECU operates this engine (VVEL != VTEC). I'm pretty sure the normal throttle butterflies do vary in some situations though, they're not completely static. __________________ 7AT Track Car! Journal thread / Car setup details

08-03-2012, 09:20 PM	#6 (permalink)
kenny's 370z Base Member Join Date: Jun 2012 Location: TN Age: 60 Posts: 243 Drives: 2012 frontier sv v6 Rep Power: 14	i took that sensor out that is connected to the vvel motor that goes in the top back side of the im.it was oily.not dripping, but oily.so when you clean the maf sensors,hit that one too. i also found this interesting; http://www.allanglesdesign.com/porta.../CCV_Bible.pdf Last edited by kenny's 370z; 08-03-2012 at 09:52 PM.

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