Brendonian 152 Posted June 6, 2016 Report Share Posted June 6, 2016 I've had a minor problem on an off for a while - if I blip the throttle a little shortly after starting the engine from cold, the revs tend to die a bit instead of actually rising. This soon clears after a few seconds of running, and it's absolutely fine when the engine is warm. It actually reminds me of an old car with a carburettor. Has anybody else experienced this? I've been advised that it could just be the IAC valve needs cleaning. But wondering if this is at all common on Evoras? Quote Link to post Share on other sites
Brendonian 152 Posted June 7, 2016 Author Report Share Posted June 7, 2016 Well, it can't be the IAC valve. The Evora doesn't have one because the DBW system performs that function. Quote Link to post Share on other sites
Bibs 11,410 Posted June 7, 2016 Report Share Posted June 7, 2016 Have you reset the ECU to see if the problem goes away? Quote 88 Esprit NA, 89 Esprit Turbo SE, Evora, Evora S, Evora IPS, Evora S IPS, Evora S IPS SR, Evora 400, Elise S1, Elise S1 111s, Evora GT410 Sport Evora NA For forum issues, please contact the Moderators. I will aim to respond to emails/PM's Mon-Fri 9-6 GMT. Link to post Share on other sites
Brendonian 152 Posted June 7, 2016 Author Report Share Posted June 7, 2016 Just now, Bibs said: Have you reset the ECU to see if the problem goes away? No, how would I go about that? Quote Link to post Share on other sites
Bibs 11,410 Posted June 7, 2016 Report Share Posted June 7, 2016 Just disconnect the battery for 30 seconds or so. Make sure you leave it 15 mins since the car last ran though before you do. 1 Quote 88 Esprit NA, 89 Esprit Turbo SE, Evora, Evora S, Evora IPS, Evora S IPS, Evora S IPS SR, Evora 400, Elise S1, Elise S1 111s, Evora GT410 Sport Evora NA For forum issues, please contact the Moderators. I will aim to respond to emails/PM's Mon-Fri 9-6 GMT. Link to post Share on other sites
Brendonian 152 Posted June 7, 2016 Author Report Share Posted June 7, 2016 That sounds easy enough even for me! Is there going to be anything that needs to be reset afterwards? Electric windows, alarm system etc? Quote Link to post Share on other sites
Bibs 11,410 Posted June 7, 2016 Report Share Posted June 7, 2016 Just your radio stations! 1 Quote 88 Esprit NA, 89 Esprit Turbo SE, Evora, Evora S, Evora IPS, Evora S IPS, Evora S IPS SR, Evora 400, Elise S1, Elise S1 111s, Evora GT410 Sport Evora NA For forum issues, please contact the Moderators. I will aim to respond to emails/PM's Mon-Fri 9-6 GMT. Link to post Share on other sites
Brendonian 152 Posted June 7, 2016 Author Report Share Posted June 7, 2016 That I can live with! I never listen to the radio Blooming DJs get on my wick. 1 Quote Link to post Share on other sites
Danelaw 156 Posted June 7, 2016 Report Share Posted June 7, 2016 I normally have to reset my electric windows too, but that's very quick and simple. 1 Quote Link to post Share on other sites
agentdr8 150 Posted June 7, 2016 Report Share Posted June 7, 2016 Make sure you disarm your alarm/immobilizer first before disconnecting the battery Quote Link to post Share on other sites
Brendonian 152 Posted June 7, 2016 Author Report Share Posted June 7, 2016 8 minutes ago, agentdr8 said: Make sure you disarm your alarm/immobilizer first before disconnecting the battery Good tip! Quote Link to post Share on other sites
Bibs 11,410 Posted June 7, 2016 Report Share Posted June 7, 2016 And don't close the boot either! 1 Quote 88 Esprit NA, 89 Esprit Turbo SE, Evora, Evora S, Evora IPS, Evora S IPS, Evora S IPS SR, Evora 400, Elise S1, Elise S1 111s, Evora GT410 Sport Evora NA For forum issues, please contact the Moderators. I will aim to respond to emails/PM's Mon-Fri 9-6 GMT. Link to post Share on other sites
Brendonian 152 Posted June 7, 2016 Author Report Share Posted June 7, 2016 Just now, Bibs said: And don't close the boot either! Ha! Even I'm not that daft* *makes mental note labelled "important" 1 Quote Link to post Share on other sites
Danelaw 156 Posted June 7, 2016 Report Share Posted June 7, 2016 I trigger the boot catch so it won't engage until reset just in case somebody gets tempted to try to close it! 1 Quote Link to post Share on other sites
Brendonian 152 Posted June 7, 2016 Author Report Share Posted June 7, 2016 I'm learning lots of good things here... Quote Link to post Share on other sites
agentdr8 150 Posted June 7, 2016 Report Share Posted June 7, 2016 This was mentioned over on the LT forums, but sometimes a good throttle body cleaning and MAF cleaning (with MAF-specific cleaner only!) can clear up idle dips/stalls. Something else to try if the ECU reset doesn't fix it. 1 Quote Link to post Share on other sites
Brendonian 152 Posted June 7, 2016 Author Report Share Posted June 7, 2016 It probably worth cleaning them regardless Quote Link to post Share on other sites
Brendonian 152 Posted June 7, 2016 Author Report Share Posted June 7, 2016 Bugger. Forget radio stations, the head unit has forgotten all my other hard-won settings ? Let's hope it's done the trick. Quote Link to post Share on other sites
Brendonian 152 Posted June 8, 2016 Author Report Share Posted June 8, 2016 Well, having disconnected the battery last night, the car seemed even more grumpy this morning I guess it was worse because the ECU has some re-learning to do, but it's not promising. Tomorrow, I'm getting the MAF and throttle body cleaned, and maybe trying a Terraclean. I think the oil may have been slightly over filled on the recent service. I don't suppose that might cause these problems? Quote Link to post Share on other sites
Bibs 11,410 Posted June 8, 2016 Report Share Posted June 8, 2016 Let it tick over for 15 mins with the AC on, that'll get it back up to speed. Quote 88 Esprit NA, 89 Esprit Turbo SE, Evora, Evora S, Evora IPS, Evora S IPS, Evora S IPS SR, Evora 400, Elise S1, Elise S1 111s, Evora GT410 Sport Evora NA For forum issues, please contact the Moderators. I will aim to respond to emails/PM's Mon-Fri 9-6 GMT. Link to post Share on other sites
Brendonian 152 Posted June 8, 2016 Author Report Share Posted June 8, 2016 8 minutes ago, Bibs said: Let it tick over for 15 mins with the AC on, that'll get it back up to speed. Thanks Bibs, I'll do that this evening. 1 Quote Link to post Share on other sites
Brendonian 152 Posted June 29, 2016 Author Report Share Posted June 29, 2016 Well, we threw some new spark plugs in the motor, and I noticed that one of the breather pipes was slightly kinked since I fitted the induction kit, so I sorted that. On a whim, I took the inlet pipe off the throttle body, and gave the inside of the throttle a quick wipe. All of this seemed to make a slight improvement. For my next trick, I thrashed the car over to Germany, and did a few laps of the Nurburgring. It now seems perfect Maybe it just needed a good run to shift some gunk, or maybe the 102 octane juice I filled up with at the 'ring did the trick. Quote Link to post Share on other sites
Brendonian 152 Posted July 5, 2016 Author Report Share Posted July 5, 2016 Surprising update! My car has been running beautifully since I returned from Germany, I though all was well... Until this morning. The problem came back. But here's the thing... I filled up with petrol last night, at the same place I normally get fuel. It's a Shell station near me, on the M42. I always use their V Power Nitro+ unleaded. Could be a coincidence, but could be the car doesn't like their fuel for some reason. Any thoughts? Quote Link to post Share on other sites
blueg33 129 Posted July 6, 2016 Report Share Posted July 6, 2016 My slow starting problem went away but came back after a refill with v power. I will monitor. Been using v power mostly for 2 years with no issues until last month. 1 Quote Link to post Share on other sites
Brendonian 152 Posted July 6, 2016 Author Report Share Posted July 6, 2016 That is interesting... My car actually stalled whilst I was changing down from 4th to 3rd at around 60mph today I've booked it in for a check-over Lotus Silverstone next week, let hope they can shed some light on it. Quote Link to post Share on other sites
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