i have a 96 gsr and i unplugged my ecu to use another ecu. I didn't end up using the other ecu and i put my original ecu back in and now my vtec wont kick in. i tried to reset my ecu several times but still nothing.
what should i do?

 

do you get a check engine light when you start it or when vtec is suppose to come on?

 

naw my check engine light doesn't come on. vtec is suppose to kick in at 4500 but i wont come in at all.

 

is your ecu modified or stock? if its stock, thats not v-tec your a hearing/feeling at 4,500 rpms thats the butterflies in the intake manifold...

 

just out of coinsidence, check ur oil level, if it's too low, vtec won't work

 

yes v-tec opperates off of oil pressure.. if your oil is too low that = low oil pressure which = no v-tec

 

my oil level is where its suppose to be. everything is good but still no vtec

 

Make sure your v-tec is hooked up lol.. look by the distributor for a GREEN plug and make sure its plugged in

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 94Integra_Ls &raquo;</TD></TR><TR><TD CLASS="quote">is your ecu modified or stock? if its stock, thats not v-tec your a hearing/feeling at 4,500 rpms thats the butterflies in the intake manifold... </TD></TR></TABLE>
youre wrong. the butterflies open at 6k rpms while vtec engages at 4.4k rpms. i dont know how this incorrect info is still floating around. and just to make sure i was 100% right, i hooked a little light up to the vtec solenoid. it lit up at 4400 rpms.

 

ok i thought on a stock ecu v-tec is around 2,000 rpms worth.. hints vtec at 6,000rpm until 8,000 rpm

 

man, vtec engagement is always an arguement. how about your solenoid? just to make sure, put this bad boy in and see if it works then.

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How is it an argument, it is a FACT that the GSR ECU, engages VTEC at 4400rpm, the IABs open at 5750 rpm.

Reset your ECU, that may be your problem if you have the correct amount of oil and everything is connected properly.

 

reset ecu again, still no luck..change/clean the filteres in your vtec soleniod

 

all so just outta the blue but iv seen it if you like a few thousand miles over due on your oil change, it being to dirty can cause vtec to not work or bogg out . just a guess gl

 

just had an oil change last week. so i will reset my ecu one mo gin
but yeah thought my vtec pops around 4400

 

K! i reset my ecu again. but still no vtec... what now?

 

take off your vtec soleniod and replace the filters

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by goota &raquo;</TD></TR><TR><TD CLASS="quote">How is it an argument.</TD></TR></TABLE> dude, search vtec and read some of the threads. there was one about 2 months ago that went on for 3 or 4 pages people arguing about when vtec crosses over, and butterflies and which does what first, ect... i meant nothing negative by saying that.

 

This might sound stupid but is your speedo, cruise, and odo working? I had a 94 GSR and the I believe it was the vehicle speed sensor on the trans went out and none of these worked nor did v-tec. Just asking and trying to help.

 

LSracing94 is right check your solenoid vtec filter it may be cloged.

 

if ur gauges dont work vtec wont work did you make sure all your gauges on your cluster work?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by goota &raquo;</TD></TR><TR><TD CLASS="quote">How is it an argument, it is a FACT that the GSR ECU, engages VTEC at 4400rpm, the IABs open at 5750 rpm.

Reset your ECU, that may be your problem if you have the correct amount of oil and everything is connected properly.</TD></TR></TABLE>
das troof. sorry about my misinformation as to when the IABs open up. i guess i dont remember them too well..

 

also, to the OP, hook up some sort of light to the solenoid. this will tell you if it is an electrical or mechanical problem.