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Still cant find Vtec!

Posted: Mon Jun 04, 2012 10:40 pm
by dagdamor
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 :?

Posted: Mon Jun 04, 2012 10:46 pm
by bristol_bb4
have u got the wiring correct from the ecu? what ecu are u using?

Posted: Mon Jun 04, 2012 10:50 pm
by Donald
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 :P

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

Posted: Mon Jun 04, 2012 11:00 pm
by mercutio
yeah what ecu are you using

Posted: Mon Jun 04, 2012 11:02 pm
by 4thgenphil
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

Posted: Tue Jun 05, 2012 8:59 pm
by dagdamor
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 :D
Keep coming with the suggestions, we WILL beat this!!! :D

Posted: Tue Jun 05, 2012 9:36 pm
by bristol_bb4
are you 100% you've connected up the vtec control to the ecu?

Posted: Tue Jun 05, 2012 9:44 pm
by dagdamor
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.

Posted: Tue Jun 05, 2012 9:54 pm
by 4thgenphil
what gears have u tried it in? :idea:

Posted: Tue Jun 05, 2012 9:54 pm
by bristol_bb4
are you using a ecu from a car with or without traction control?