I have a serious engine problem

Mike · 08-02-2010, 11:17 PM

Quote:

Originally Posted by Jordo!

Huh? I don't get why the brake switch would cause the problems you were having with TPS readings

Did the ECU think the brake was fully depressed when it wasn't?

yes, the 350 and 370 both have this feature programmed in that says if you are braking, there is no reason you should also be accelerating, so it won't let the throttle open more than 15% if the brakes are applied. With the switch sending the signal that the brakes are on, it was restricting the throttles.

Anyone that drag races these with slicks knows they have to pull the abs fuse to power brake it and do a burn out. Try it sometime without doing that, the car won't do it.

Jeffblue · 08-02-2010, 11:44 PM

Quote:

Originally Posted by Mike

yes, the 350 and 370 both have this feature programmed in that says if you are braking, there is no reason you should also be accelerating, so it won't let the throttle open more than 15% if the brakes are applied. With the switch sending the signal that the brakes are on, it was restricting the throttles.

Anyone that drag races these with slicks knows they have to pull the abs fuse to power brake it and do a burn out. Try it sometime without doing that, the car won't do it.

how do people heal toe with this feature?

HKYStormFront · 08-02-2010, 11:57 PM

Quote:

Originally Posted by Jeffblue

how do people heal toe with this feature?

you don't need hardly any throttle to rev the engine with the clutch in and besides, with the rev match shifting the 370 does, you don't need it anyway.

that sucks you didn't get to drive your own car mike but at least bryan let you take some laps in his. i'm hoping to get some seat time in the beast at the next A/V track weekend coming up

Jordo! · 08-03-2010, 12:51 AM

Quote:

Originally Posted by Mike

yes, the 350 and 370 both have this feature programmed in that says if you are braking, there is no reason you should also be accelerating, so it won't let the throttle open more than 15% if the brakes are applied. With the switch sending the signal that the brakes are on, it was restricting the throttles.

Anyone that drag races these with slicks knows they have to pull the abs fuse to power brake it and do a burn out. Try it sometime without doing that, the car won't do it.

Huh. So no brake-stand launches for the autos then...?

WarmAndSCSI · 08-03-2010, 02:15 AM

Quote:

Originally Posted by Jordo!

Huh. So no brake-stand launches for the autos then...?

Indeed. I'm no noob to launching or doing a burnout in an automatic, so we took the Z out to the middle of the desert (literally) and I tried a few burnouts/launches. As Mike describes, as soon as you apply throttle while braking, the engine cuts power. I was able to get maybe 1.5 sec of brake-torquing before the engine cut power. Needless to say, no burnouts were achieved that day.

It actually makes for a very poor launch...

Jordo! · 08-03-2010, 05:27 AM

Quote:

Originally Posted by WarmAndSCSI

Indeed. I'm no noob to launching or doing a burnout in an automatic, so we took the Z out to the middle of the desert (literally) and I tried a few burnouts/launches. As Mike describes, as soon as you apply throttle while braking, the engine cuts power. I was able to get maybe 1.5 sec of brake-torquing before the engine cut power. Needless to say, no burnouts were achieved that day.

It actually makes for a very poor launch...

Well that sucks.

I guess it's just as well since we have no way of checking to see if the ATF is burnt from doing that...

I was able to lay wheels pretty nicely just flooring with the traction control off tho

Modshack · 08-03-2010, 10:34 AM

Quote:

Originally Posted by Mike

yes, the 350 and 370 both have this feature programmed in that says if you are braking, there is no reason you should also be accelerating, so it won't let the throttle open more than 15% if the brakes are applied. With the switch sending the signal that the brakes are on, it was restricting the throttles.

I think most drive by wire cars have this "feature" these days (throttle cut on brake activation). Toyota wishes they had it..

Glad you figured it out Mike!

SoCal 370Z · 08-03-2010, 11:05 AM

Quote:

Originally Posted by Modshack

Toyota wishes they had it..

Yeah, this was one brought-up during the Toyota fiasco, and Nissan was given kudos for having this feature over Toyota!

kevin1985912 · 08-03-2010, 12:50 PM

Quote:

Originally Posted by Modshack

I think most drive by wire cars have this "feature" these days (throttle cut on brake activation). Toyota wishes they had it..

Glad you figured it out Mike!

LOL~

cossie1600 · 08-03-2010, 07:30 PM

Quote:

Originally Posted by Modshack

I think most drive by wire cars have this "feature" these days (throttle cut on brake activation). Toyota wishes they had it..

Glad you figured it out Mike!

Yes they do have it on some cars

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