Vtec is not kicking in?? :(

[CRX119]

Hey guys i recently put a thermostat into my car and i had to take my distributor to take off both hoses that run into the engine and when i put everything back together drove it all day and a day my revs have been playing up and no vtec what so ever.... Btw its. B16a2 please help people!!!

[tiksie]

Is the vtec solenoid plugged in properly ?

Do you have enough oil ?

Are you getting any CEL's ?

Are you trying to hit vtec whilst engine is cold ?

[TODA AU]

Did you plug the vehicle speed sensor back in?

[CRX119]

Is the vtec solenoid plugged in properly ?

Do you have enough oil ?

Are you getting any CEL's ?

Are you trying to hit vtec whilst engine is cold ?



What are CEL's, and no im not hitting vtec when engine is cold, and where is the Vtec solenoid??

Thanks so much for your help Tiksie i appreciate your replies

[CRX119]

Did you plug the vehicle speed sensor back in?


adrian sorry for my noobness lol but what is the speed sensor and where can that be found??
Btw thank you so much for your Help Adrian....

[TODA AU]

No problem,

The vehicle speed sensor is on top of the gearbox, directly below the thermostat housing.
Quck check - is the speedo on the dash working?

Check the following are plugged in & secure:
Engine coolant temp sensor (2 wires) - Located lower left hand front of head (below Vtec solinoid)
Vtec solinod & or VTM (Green plug if present) - check these are plugged in
VSS as decribed above
TPS sensor (on firewall side of throttle body)

If the revs are bouncing around on the tacho, this is usually unrelated.
Usual culprit is a lose spade connector on the ingnitor (inside the dissy)
Fix - remove cap, remove rotor button, remove plastic cover, check security of connectors on ignitor. (RPM is the blue wire)
Reassemble in revers order.

[CRX119]

No problem,

The vehicle speed sensor is on top of the gearbox, directly below the thermostat housing.
Quck check - is the speedo on the dash working?

Check the following are plugged in & secure:
Engine coolant temp sensor (2 wires) - Located lower left hand front of head (below Vtec solinoid)
Vtec solinod & or VTM (Green plug if present) - check these are plugged in
VSS as decribed above
TPS sensor (on firewall side of throttle body)

If the revs are bouncing around on the tacho, this is usually unrelated.
Usual culprit is a lose spade connector on the ingnitor (inside the dissy)
Fix - remove cap, remove rotor button, remove plastic cover, check security of connectors on ignitor. (RPM is the blue wire)
Reassemble in revers order.


The speedo is working, i will check the speed sensor tomorrow.
engine coolent temp is secured, vtec solinoid is plugged in.... i will have to check the tps sensor tomorrow, and im not going to touch the dizzy adrian i'll just let u have a look at it when i bring it in to you on monday is that cool??

[TODA AU]

NP re monday.

Re: Speed sensor, if the speedo is working, scratch the VSS idea. (If it's unplugged, the speedo won't work)
Coolant temp sensor & Vtec is secure... That doesn't leave much...

Check the TPS tomorrow as you said (but this is unlikley as you'd have a CEL - Check engine light)
Also check the main ECU on the thermostat housing. (It may be loose - 10mm head bolt)

[CRX119]

look im just going to drive it normally till monday, i wont be doing harm to the engine will i??

[TODA AU]

If there's no check light it should be fine...
(You did put coolant in right?)

[CRX119]

yeah i did lol.... i'll see u monday.... i'll check those things tomorrow n give u a call... thnx adrian