Miff Posted August 18, 2002 Share Posted August 18, 2002 Have recently run in the vhpd and now have found an interesting problem, after opening the throttle fully it sticks open for a short while. It seems to happen but to a lesser extent at less throttle. It's fairly disconcerting when you go to change gear and the revs hold rather than fall (especially when at the upper end of the rev range). I tried moving the throttle cable routing as it seemed to have a few fairly acute angles in it but this did not fix the problem. any suggestions? Link to comment Share on other sites More sharing options...
Julian Thompson Posted August 18, 2002 Share Posted August 18, 2002 Sure it is the linkage? The MEMS does have the annoying habit of "holding" on a bit during changes... Link to comment Share on other sites More sharing options...
Bob Corb Posted August 19, 2002 Share Posted August 19, 2002 This is a known problem with the later type throttles (Phantom type as PTP call them). PTP may be the best people to ask as they source them. Evo did a track day car test a while back and they stuck open on an Exige. Also I've heard of a 340R getting stuck open throttles on a track day. Bob Link to comment Share on other sites More sharing options...
Miff Posted August 19, 2002 Author Share Posted August 19, 2002 Have been having a fiddle around and testing and the revs do actually stay up a bit at any degree of throttle. Will try PTP. If it is the ecu, will it stop if i fit an emerald one? (something i was going to do in the future anyway). Thanks. Edited by - miff on 19 Aug 2002 10:08:04 Link to comment Share on other sites More sharing options...
V7 SLR Posted August 19, 2002 Share Posted August 19, 2002 If it is the ecu, will it stop if i fit an emerald one? (something i was going to do in the future anyway). It is the ECU, and yes it will stop if you fit an Emerald. Worcs L7 club joint AO.//Membership No. 4379//Azure Blue SLR No. 0077//Se7ens List Tours Link to comment Share on other sites More sharing options...
Miff Posted August 19, 2002 Author Share Posted August 19, 2002 Sorry, do you mean the throttle sticking fully open is down to the ECU as well? Link to comment Share on other sites More sharing options...
Miff Posted August 22, 2002 Author Share Posted August 22, 2002 Sorry to bring back up an old(ish) thread but i think the problem is getting worse. The cable doesn't seem to be the problem, it returns to closed almost instantly. The throttle is now sticking open almost every time i plant my right foot to even 3/4 of travel. Any other suggestions on how to diagnose/mend the problem? Link to comment Share on other sites More sharing options...
Miff Posted September 6, 2002 Author Share Posted September 6, 2002 for solution see thread entitled 'idle bypass valves' Link to comment Share on other sites More sharing options...
Mark Piper Posted September 6, 2002 Share Posted September 6, 2002 Mine doesn't stick and I've got a standard ECU. I've also foudn that the annoying hunting when cold was cured by using Optimax. Link to comment Share on other sites More sharing options...
Miff Posted September 6, 2002 Author Share Posted September 6, 2002 the ecu wasn't the problem, a replacement was tried and di not cure the problem, it seemed to be a manufacturing defect causing a purely mechanical fault. Link to comment Share on other sites More sharing options...
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