turbosnatch

im throwing a code 7 in my gsr ek, and it is obviously the tps. now when im driving down the road it does not want to hit vtec all the time. and when i am gunning it it goes in and out of vtec when it wants, sometimes it doesnt even want to kick in. really weird. my tps has been bad for a lil while but i had it rigged and i think it finally pooped on me totally. im worried i screwed something else up. any info is appreciated

e jay one

im not sure but i think the throttle has to be wide open to engage vtec. if that helps

hatchi

if you have a CEL present usually vtec will not engage

turbosnatch

ok i think that solves the problem cause the tps is kinda broken but i glued it on and maybe it still gets kind of a connection and thats why it cuts in and out. thats ounds fair and ill get one asap. im just slacking, thanks for the quick replies

1995Ex_Sedan

No. You don't need to be at WOT for Vtec to engage.

8krdline

It does affect vtec engaging. I had a cel for my tps and vtec did not engage from personal experience. Make sure the voltage is right.

turbosnatch

ya no doubt. ima get a new one asap and be vtec'in away

_Cyclone_

At least the car is still drivable...

nighttrain33

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 1995Ex_Sedan &raquo;</TD></TR><TR><TD CLASS="quote">No. You don't need to be at WOT for Vtec to engage.</TD></TR></TABLE>

I think it is half throttle for vtec to engage.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 8krdline &raquo;</TD></TR><TR><TD CLASS="quote">It does affect vtec engaging. I had a cel for my tps and vtec did not engage from personal experience. Make sure the voltage is right.</TD></TR></TABLE>

I have thrown a TPS code and it does affect vtec as well.

-Shane

nighttrain33

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nighttrain33 &raquo;</TD></TR><TR><TD CLASS="quote">I have thrown a TPS code and it does affect vtec as well.
-Shane</TD></TR></TABLE>

I did still did work, but it was in and out of vtec during vtec range.

-Shane

_Cyclone_

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nighttrain33 &raquo;</TD></TR><TR><TD CLASS="quote">I think it is half throttle for vtec to engage.</TD></TR></TABLE>

Throttle position doesn't matter to the ECU for the VTEC to engage... As far as I know there are only four conditions that must be met (aside from any codes showing up and not letting it engage cause it's in limp mode)...

1.&gt; Enough oil pressure
2.&gt; Coolant temperature
3.&gt; Engine RPM (obviously)
4.&gt; Engine load (meaning enough MAP sensor reading)

With the Hondata S200... I can adjust the VTEC engagement RPM and the level of load that must be present before the VTEC engages. I think right now the load is 750mB.

nighttrain33

Engine load = throttle position

-Shane

_Cyclone_

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nighttrain33 &raquo;</TD></TR><TR><TD CLASS="quote">Engine load = throttle position</TD></TR></TABLE>

Wrong.

92b16vx

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nighttrain33 &raquo;</TD></TR><TR><TD CLASS="quote">Engine load = throttle position

-Shane</TD></TR></TABLE>
Um, no, try intake manifold negative pressure.

vtec requires (for a D16Z6)

4800 rpms
vehicle speed of 13mph in a manual and 3mph in an automatic
engine coolant temperature of above 140F (60C)
load around 800-500mmHg(?)

TypeRobert

If im not mistaken the ECU goes into limp mode when you are throwing a CEL so VTEC doesnt engage when the computer is in limp mode and the car owuld feel slower i suppose still check your TPS sensor its there for a reason and the CEL is also there for a reason you know.

8krdline

i think it just depends on how far the voltage of the tps is off. When I first put the throttle body on I had a cel and no vtec. I forgot to adjust it, then adjusted it to the right voltage. Now I have a cel again for the voltage but vtec still engages. It just probably isn't as far off as the first time.

92b16vx

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by slperhybrid &raquo;</TD></TR><TR><TD CLASS="quote">If im not mistaken the ECU goes into limp mode when you are throwing a CEL so VTEC doesnt engage when the computer is in limp mode and the car owuld feel slower i suppose still check your TPS sensor its there for a reason and the CEL is also there for a reason you know.</TD></TR></TABLE>
Not nescessarily, it depends on which sensor failure has occured.

turbosnatch

damn, i just changed my oil and the vtec runs right through every gear, that is weird, my tps is still messed up but at well it doesnt act like crap when i hit the gas. but anyways will any tps work as long as its 92-95 obd1, my gsr is obd1

8krdline

any b or d series tps will work