TimH Posted November 18, 2005 Share Posted November 18, 2005 I have seen the thread below about UK spec Supra's but mine started idling low yesterday evening, was fine in the morning when I left London and now seems to be sitting at 600 as before it was at 1k solidly. It is idling to the point that my lights dim a bit and sounds like it's going to cut out (not that it does, just sounds very quiet). Someone has suggested it may be thermostat maybe knackered and the car isn't going into cold start compenstation, if this is the case where would this be located and anyone know where I can get one from. Any techincal answers would be great, but treat me like a 2 year old as my mechanical understanding is a little rusty Thank you guys n gals Link to comment Share on other sites More sharing options...
Ian C Posted November 18, 2005 Share Posted November 18, 2005 Actually a 1000rpm warm idle is what I'd class as a fault 650-700rpm should be your normal warm idle... -Ian Link to comment Share on other sites More sharing options...
TimH Posted November 18, 2005 Author Share Posted November 18, 2005 Actually a 1000rpm warm idle is what I'd class as a fault 650-700rpm should be your normal warm idle... -Ian Why would my lights be dimming until I blip it up to 1k and the car shakes a little, I would have classed that as too low or is there something else awry I'm not thinking about? Appreciate the response Link to comment Share on other sites More sharing options...
Alex Posted November 18, 2005 Share Posted November 18, 2005 RPM needle reading wrong? Have you ever taken it off? Alternator bust/bad earth/connection? Try cleaning the connectors for the battery terminals. (Undoing the battery connectors will also reset the ECU which could also be a good move) Link to comment Share on other sites More sharing options...
TimH Posted November 18, 2005 Author Share Posted November 18, 2005 RPM needle reading wrong? Have you ever taken it off? Alternator bust/bad earth/connection? Try cleaning the connectors for the battery terminals. (Undoing the battery connectors will also reset the ECU which could also be a good move) I replaced the dials with some from http://www.skewer.co.uk(shameless plug, great guys) so the needle maybe in the wrong place, just been out and it seems to be idling correctly now (always does when you take someone who knows to have a look:complain: ). Looked at the battery connectors and they are a bit dirty so when I get back to London tonight I'll reset the ECU and give the terminals a good clean. I have been soooo impressed witht he reliability and trouble free motoring I've had from the Supe so far, she goes in for her 4k oil change on Wednesday and fluid top up, so will ask the guys to do a full service and check over then One thing, if the lamda sensor is fooked would that also cause idle problems? would it be worth unplugging it to see also? Link to comment Share on other sites More sharing options...
Alex Posted November 18, 2005 Share Posted November 18, 2005 Unbolting and cleaning the O2 wouldn't go a miss... dunk it in Lemon juice over night (JIF) and then rinse off with brake cleaner. Link to comment Share on other sites More sharing options...
TimH Posted November 18, 2005 Author Share Posted November 18, 2005 Unbolting and cleaning the O2 wouldn't go a miss... dunk it in Lemon juice over night (JIF) and then rinse off with brake cleaner. Can this be accessed from top or bottom, I saw it's location on the pics in techincal it;s on the downpipe, looks a bit tight from the top! (only ask as I'll have to grab my trolley and jacks if so) Link to comment Share on other sites More sharing options...
Alex Posted November 18, 2005 Share Posted November 18, 2005 I'm not sure I've not taken it out of a stock DP before now...only out of my Single Turbo DP where it's very accessible. Link to comment Share on other sites More sharing options...
TimH Posted November 18, 2005 Author Share Posted November 18, 2005 whilst were on the subject - to reset the ECU on any other car I just unplugged the negative for 10 mins, just looking on the toyota imports forum and they say to pull out the EFI fuse to reset the ECU - surely pulling the negative for 10 mins will do? Link to comment Share on other sites More sharing options...
tbourner Posted November 18, 2005 Share Posted November 18, 2005 Yeah same thing really. The O2 sensor is pretty easy to get to from the top, took mine out and replaced pretty quickly (at work in fact!!). Link to comment Share on other sites More sharing options...
TimH Posted November 18, 2005 Author Share Posted November 18, 2005 What a very helpful bunch you all are Link to comment Share on other sites More sharing options...
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