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

 

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

 

if you have a CEL present usually vtec will not engage

 

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

 

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

 

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.

 

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

 

At least the car is still drivable...

 

<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

 

<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

 

<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.

 

Engine load = throttle position

-Shane

 

<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.

 

<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(?)

 

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.

 

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.

 

<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.

 

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

 

any b or d series tps will work