MilesH Posted May 5, 2009 Posted May 5, 2009 Matt, I posted the problem on rovertech and these were the responses I got: Its gone in to limp-home mode for what ever reason. Start with the basics, going from left to right, what order are the brown, black and blue multiplugs in on the VVC solenoid unit? sounds liek soelnoids are wired the wrong way round! swap em round, and try again! As above. The solenoid connectors are the wrong way round. Or the cam sensor has failed. Yep. I'm pretty sure the 5750rpm limit is only imposed in response to a cam error. Hope it helps
Martin R Posted May 5, 2009 Posted May 5, 2009 If it goes to 1K rpm when you disconnect the cam sensor IMO that is ok. Edit, Matt check the resistance of the blue temp sensor when cold with it disconnected. Its on the left hand side water outlet on the head as you look from the rear. Warm the car up and check it changes as the temp rises. If that is ok check the wiring continuity to the ECU. I will post the pin numbers tomorrow.
Guest Glen Posted May 6, 2009 Posted May 6, 2009 Try this link for details of the VVC wiring/sensors. If you click on the red/black connectors it show the pinouts.
Fiona Posted May 6, 2009 Posted May 6, 2009 Hopefully Matt and Claire are busy doing something else atm to reply!
Matt C Posted May 6, 2009 Author Posted May 6, 2009 Thanks Steve - I have a spare blue temp sender. Glen - I think the part number for the oil temp sender is MEK000020 - not sure water the brown water temp sender part number is. Fiona - Claire is very busy having contractions every 6 mins! Unfortunately she has had them for 4 days now and they are not progressing (she has also not slept for 3 nights now either). Not much fun, but not much I can do either other than make her banana milkshake and bring glasses of water. Miles - thanks (hugely) for posting up for me. I am sure the connections are correct, but its worth a try. Swapping them should make it run rough if they are currently right - will try tonight. Martin - will measure blue temp sender tonight aswell. Right, off to see if I can find a cam position sender at work somewhere.
Fiona Posted May 6, 2009 Posted May 6, 2009 Give Claire my best, must be exhausting for her. Hope things get moving soon and it progresses quickly. The no sleep is just preparation for the next 6 months of your life! Good luck with the car as well!
Matt C Posted May 6, 2009 Author Posted May 6, 2009 Matt, I posted the problem on rovertech and these were the responses I got:Its gone in to limp-home mode for what ever reason. Start with the basics, going from left to right, what order are the brown, black and blue multiplugs in on the VVC solenoid unit? sounds liek soelnoids are wired the wrong way round! swap em round, and try again! As above. The solenoid connectors are the wrong way round. Or the cam sensor has failed. Yep. I'm pretty sure the 5750rpm limit is only imposed in response to a cam error. Hope it helps Thanks again for posting this. Connectors are blue, black, brown (or opposite order for Rover folk as engine is other way around). I'm reconsidering the cam position sensor as the fault........
Guest Glen Posted May 6, 2009 Posted May 6, 2009 I do not think that MEK000020 is the correct part number. I'll have to double check tonight but I think I managed to buy one of those and it's not even the correct shape. If I can find it I'll bring it along to Bedford. I think the part number is either MHK100490 or MHK100600 but I couldn't find either bits to buy - even at rover specialists and xpart (the rover parts supplier). The best place I've found to look is in the rover parts catalogue here - look under mfg at around page 71. The only problem is that the use the rover engine/chassis numbers which are no good at the elise engines have different codes. Sorry, I should have thought an listed these part number sooner: NNK10001 - air intake temp sensor MEK100060 - brown coolant temp sensor NSC100380 - camshaft sensor NSC100760 - crank position sensor MHK100600 - MAP sensor NEC100690 - coil pack
Matt C Posted May 6, 2009 Author Posted May 6, 2009 I do not think that MEK000020 is the correct part number. I'll have to double check tonight but I think I managed to buy one of those and it's not even the correct shape. If I can find it I'll bring it along to Bedford. I think the part number is either MHK100490 or MHK100600 but I couldn't find either bits to buy - even at rover specialists and xpart (the rover parts supplier). The best place I've found to look is in the rover parts catalogue here - look under mfg at around page 71. The only problem is that the use the rover engine/chassis numbers which are no good at the elise engines have different codes. Sorry, I should have thought an listed these part number sooner: NNK10001 - air intake temp sensor MEK100060 - brown coolant temp sensor NSC100380 - camshaft sensor NSC100760 - crank position sensor MHK100600 - MAP sensor NEC100690 - coil pack I have acccess to LandRover parts directory, but thinking about whilst it lists Lotus parts, LR do not take the VVC engine hence will not have the oil temp sender for the VVC. How about middle of p71 towards bottom... MEK100160 "Transducer Oil Temperature"
Guest Glen Posted May 6, 2009 Posted May 6, 2009 I seem to recall that MEK100160 is a substitute to MEK000020, but feel free to check.
Matt C Posted May 6, 2009 Author Posted May 6, 2009 With engine idling, there is 12v to both VVC solenoids - is this right??
Matt C Posted May 6, 2009 Author Posted May 6, 2009 Seems, (according to this http://www.sandsmuseum.com/cars/elise/info...art_2_of_3.pdf) there should only be 12v to one solenoid at a time.... this could be my problem. Need to check the wiring to the ECU......
Matt C Posted May 7, 2009 Author Posted May 7, 2009 Tim has done some digging and it looks like the 12v to both solenoids is correct (which means the ECU connections should be ok too). Back to the drawing board.... either faulty sensor or solenoid maybe.
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