is it ok to pull when your engine is still cold? i was pulling on 2nd gear today when it was cold and no vtec engage?? is it ok.. just a once in a while thing

 

i believe its true... its happen to me... but have learned that you should'nt race a cold motor... go easy on the motor until its warm

 

VTEC will not engage if the motor is cold.

 

there are few things that have to be in place for VTEC to engage. and yes danielson TEMPERATURE is one thing, meaning if the ecu senses something is wrong it won't engage. TPS is also another factor.

 

NO, do not beat your engine while it is cold....

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by LSvtec03 &raquo;</TD></TR><TR><TD CLASS="quote">NO, do not beat your engine while it is cold....</TD></TR></TABLE>

yeah that too

 

ya mine doesnt hit v either when mines cold ive only done it once or twice cuz i get impatient

 

It is not just the V-Tec, even Lift (VVTL-I) does not hit when the engine is cold. I agree with the people above who said to NOT beat the engine when it is cold.

 

it won't hit when it is cold, and why the hell would u pull your car when it is cold?

 

I never take mine past 3500 before my car warms up.

It will tear up your motor if you do it often.

 

In order for the ECU to initiate the VTEC system, 5 engine conditions must be met.

Temperature: The engine must have reached normal operating temperature.

Throttle Position: The throttle must be open far enough to allow for increased airflow in VTEC.

Vehicle Speed: The car must be in motion (wheels spinning).

RPM: Engine must spin to it's target value. The GS-R will send it's "GO" signal for VTEC at 4400 RPM while the Type R sends it's signal at 5700 RPM.

Oil Pressure: The engine must be operating with normal and safe levels of oil pressure determined by the VTEC pressure switch.

The ECU will send a signal for a spool valve to open. When this valve opens, oil is allowed into the pivot shaft inside the valve rockers and directed into the center rocker. Inside the center rocker, a set of pins are forced outward by the oil pressure and lock inside the rockers to both sides. This entire process occurs in 1/10 of a second.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by shorto85 &raquo;</TD></TR><TR><TD CLASS="quote">In order for the ECU to initiate the VTEC system, 5 engine conditions must be met.

Temperature: The engine must have reached normal operating temperature.

Throttle Position: The throttle must be open far enough to allow for increased airflow in VTEC.

Vehicle Speed: The car must be in motion (wheels spinning).

RPM: Engine must spin to it's target value. The GS-R will send it's "GO" signal for VTEC at 4400 RPM while the Type R sends it's signal at 5700 RPM.

Oil Pressure: The engine must be operating with normal and safe levels of oil pressure determined by the VTEC pressure switch.

The ECU will send a signal for a spool valve to open. When this valve opens, oil is allowed into the pivot shaft inside the valve rockers and directed into the center rocker. Inside the center rocker, a set of pins are forced outward by the oil pressure and lock inside the rockers to both sides. This entire process occurs in 1/10 of a second. </TD></TR></TABLE>
was going to post something similiar to this.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Chelica &raquo;</TD></TR><TR><TD CLASS="quote">It is not just the V-Tec, even Lift (VVTL-I) does not hit when the engine is cold. I agree with the people above who said to NOT beat the engine when it is cold.</TD></TR></TABLE>

you just made a redundant statement. those 2 systems are one in the same, vtec has lift its just lettered in the alpha numeric(variable valve timing lift and electronic control).

normally i let mine run a bit before i start nailing on it, but my car get warmed up before i get out of my neighborhood

 

thats why u warm your motor b 4 taking off

 

Vtec only kicks in when you car warms up. its so u dont harm anything.

 

yea mines takes aloooong time to warm up....maybe its the 12 compression??....but anyway...mine also didnt engage due to low oil...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by projectTeG &raquo;</TD></TR><TR><TD CLASS="quote">you just made a redundant statement. those 2 systems are one in the same, vtec has lift its just lettered in the alpha numeric(variable valve timing lift and electronic control).

normally i let mine run a bit before i start nailing on it, but my car get warmed up before i get out of my neighborhood </TD></TR></TABLE>

I did not mean it like that, just mentioning that Toyota little Lift works the same way when it is cold. Even if those two are one in the same, I have not experienced V-Tec in a Honda. I used to drive a 6 Speed GT-S and experienced Lift after going past 6200RPM or so, and therefore I mentioned Lift not Vtec. Sorry.

 

do you guys warm up your car before even going anywhere? or do you just let it warm up while driving it easy?

i used to have to let my crx warm up for a long time before i could go.. or it would drive really bad.

 

I almost always let mine warm up unless im late for school!

 

Forgot to ad, can someone PM me and tell me what wire i have to splice into for the clutch relay so i can install remote start on a 5spd?

 

Yea, I warm my car up before going, especially if it is super cold out.

 

How warm is warmed up? I usually just wait till the dial passes the C on the temp gauge.

 

actually today leaving work for about 15 minutes of driving normal on the freeway and streets...my vtec never engaged!!....but yesterday it was working fine....i really really think i have to really warm up the car before it wil engage i mean i was driving for 15 min straight!! then mashing towards closer i got home tryin to get it to engage!! wtf?!?....never ended working because i arrived home...hhmm owell ill try again tommrow..but i mean i think i reallllyy have to let it warm up....any reasons why??

 

check your oil, if your really low on oil.. no vtec.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by VtecGsr95 &raquo;</TD></TR><TR><TD CLASS="quote">ya mine doesnt hit v either when mines cold ive only done it once or twice cuz i get impatient</TD></TR></TABLE>
yea.. i got impatient too.. i warmed up my car on a cold *** day for like 8 mins and then while driving i floor it on 2nd and vtec didnt hit.. its ok to pull wen motor is cold just ONCE in a whole rite??