vtec not kicking in when engine is warm?

[THE_BIFF_EK_CIVIC]

hey

i have a b16a and when my car is warm, normally vtec will normally just work once its warm but in my case i have to stop and turn the car wright off and let it sit for 5 mins then back on for it to actually work, just wondering what it could be? a guy told me could be wiring in the ecu or the solonoid?

any help is much appreciated :) :thumbsup:

[seihoa]

oil levels

[THE_BIFF_EK_CIVIC]

nah its not my oil did a service 2 weeks ago :)

[IEVAQ8]

when did u notice this started happening???

[1990B18A]

this has happened since he has owned the car

[THE_BIFF_EK_CIVIC]

as post above says, since the day after i bought it.

[na-118]

solenoid

[ECU-MAN]

check the ECU for fault codes

inspect your sump for dents

check your oil pressure.

[THE_BIFF_EK_CIVIC]

cleaned my solwnoid out, first thing i tried. will try what ECU-MAN said

[Limbo]

sounds like the car is going into limp mode when vtec kicks in, and your resetting the ecu by turning off and on.
Check your timing on top of what's been said, the ECU will disable vtec if it gets too much knocks.

maybe also faulty knock sensor or faulty ECU.

Try one thing at a time and isolate the problem

[THE_BIFF_EK_CIVIC]

sounds like the car is going into limp mode when vtec kicks in, and your resetting the ecu by turning off and on.
Check your timing on top of what's been said, the ECU will disable vtec if it gets too much knocks.

maybe also faulty knock sensor or faulty ECU.

Try one thing at a time and isolate the problem



will it be easier to take it to honda and get them to hook it up and see if theres a fault with my ecu?

[THE_BIFF_EK_CIVIC]

i also have an oil leak around the block

[90LAN]

just need a wire to check eng codes
dont need to go to honda
is it throwing any?

[ninzee]

hey sorry to hijack thread but is there a diy to cleaning the soliniod i searched and nothing, occasionally my vtec doesnt have a cross over it pops in and out as it pleases the power is there jst no sound :(

[IEVAQ8]

hey sorry to hijack thread but is there a diy to cleaning the soliniod i searched and nothing, occasionally my vtec doesnt have a cross over it pops in and out as it pleases the power is there jst no sound :(

first thing that comes to mind, is check for oil levels............ most common prob when vtec is kicking in and out.....and there is no cross over point...

also check the wiring to the solenoid and plug is in good condition

[ninzee]

first thing that comes to mind, is check for oil levels............ most common prob when vtec is kicking in and out.....and there is no cross over point...

also check the wiring to the solenoid and plug is in good condition

yea thats what i thought too but i checked oil levels and its near full havent checked plugs yet are they the ones near the solinoid

[IEVAQ8]

yea thats what i thought too but i checked oil levels and its near full havent checked plugs yet are they the ones near the solinoid

YEH..... i think it only has one plug for the solenoid, unless ur solenoid filter is dirty and blocked....