Still cant find Vtec!

dagdamor · Post by **dagdamor** » Mon Jun 04, 2012 10:40 pm

Need some help here guys. Still cant seem to get vtec to work on my Roverlude see here..............

http://www.ludegeneration.co.uk/non-lud ... t2347.html

I have checked the following and all seems good..............
VSS
Water temp sensor
Oil pressure
Map sensor
TP sensor
Vtec solenoid is working if I apply voltage.
No vtec trigger coming from ECU

Engine starts and runs fine seems quite quick, but vtec not working and rev limiter comes in at 6500 rpm.

Any ideas would be appreciated. I am so close with this conversion, just need some Vtec

bristol_bb4 · Post by **bristol_bb4** » Mon Jun 04, 2012 10:46 pm

have u got the wiring correct from the ecu? what ecu are u using?

Post by **Donald** » Mon Jun 04, 2012 10:50 pm

I thought that if the engine wasn't up to temp/sufficient oil or oil pressure then VTEC was disabled and the rev limit was set at 6500?

Although I doubt you'd have made any of those mistakes

Maybe some pissy little sensor to do with oil somewhere is causing the non VTECness?

mercutio · Post by **mercutio** » Mon Jun 04, 2012 11:00 pm

yeah what ecu are you using

Post by **4thgenphil** » Mon Jun 04, 2012 11:02 pm

there is meant to be a secound temp sensor that is seperate from the one for the gauge (this is rich @ PA's knowledge btw

dagdamor · Post by **dagdamor** » Tue Jun 05, 2012 8:59 pm

I am using P13 ecu, it is from JDM Manual transmission.. The donor car was an auto, and I still have the auto ecu but no vtec with that either. Which now gets me thinking/remembering? IIRC there was a thread on a USA forum concerning auto to manual swap and something had to be done with the gear stick position switch.

As I am still using auto wiring loom I am thinking that a cable in the ecu plugs could/could not be picking up a ground or voltage feed

I will look on the interweb.
I have already checked water temp to ecu sensor, thanx for the thought though

Keep coming with the suggestions, we WILL beat this!!!

bristol_bb4 · Post by **bristol_bb4** » Tue Jun 05, 2012 9:36 pm

are you 100% you've connected up the vtec control to the ecu?

dagdamor · Post by **dagdamor** » Tue Jun 05, 2012 9:44 pm

what are you calling 'vtec control' ?
Do you mean the vtec solenoid situated at the dizzy end of the head? if so then yes this is connected. the problem is it isnot getting a control signal from the ECU.

Post by **4thgenphil** » Tue Jun 05, 2012 9:54 pm

what gears have u tried it in?

bristol_bb4 · Post by **bristol_bb4** » Tue Jun 05, 2012 9:54 pm

are you using a ecu from a car with or without traction control?