I currently have some issues with the VVC system of my Elise S1 111S (2000). The inlet cam doesn't switch any longer when I drive the car past 4000rpm. I'm trying to find the root cause but first I'd like to know if some of you have already experienced similar issues on your cars. My second question is : can you get where the problem comes from if you plug it to a diag system ? My current analysis is :
case 1 : one of the input (signal) to the VVC system is not ok --> no cam switch
- VVC oil temperature sensor ; I've checked it and it seems to work fine.
- camshaft sensor issue ; I've seen on internet that it would cause the engine to limit revs between 5600 and 6000 rpm. I can rev past 6000 rpm (6500rpm) so I think it's fine.
- MAP sensor faulty ; I haven't checked but I tend to think that it would have so other impacts, right ? How can I check it by the way ?
- crankshaft sensor faulty ; I would have no speed on the speedometer, so ok
case 2 : the inputs are ok but the VVC system itself is faulty --> no cam switch.
- the VVC solenoids are faulty ; I have been told that the resistance should be between 6.6 and 8.8 ohms. I've got a little bit more on mine when I measure at the solenoid plug pins (around 8-10 ohms for each solenoid); could somebody tell me how much he's got on his car ?
- Hydraulic Control Unit faulty ? is there any way to check ?
- Ream camshaft belt ; looks good and would be already noticed if not ok
- issue with MEM2J ECU, VVC drivers faulty ; the engine would be limited to 5500rpm. Needs to be checked
If anybody has any idea, please let me know !!!
Thanks for your help !
Edited by gti205jb, 29 August 2013 - 7:56 PM.