Samurai 20V Posted October 13, 2020 Share Posted October 13, 2020 Hi Guys. Been having issues with the idle on my TT6. It is running on a Link PnP, have had the idle tuned properly, was working good for a while. Before I went standalone, the valve was giving me issues, I took it off and cleaned it, sorted it out. At the moment, seems to be getting stuck, the idle is between 1500 - 2000rpm when the car gets hot. When the car is cold, it seems fine. Is the valve finally dead? I measured the resistance, within spec. Has anyone used any aftermarket replacement valves with success? I see a few Aisan valves on ebay, but worried that the price seems way cheaper than the OEM price. any input welcome. Thanks. Quote Link to comment Share on other sites More sharing options...
Mike2JZ Posted October 13, 2020 Share Posted October 13, 2020 Random, but have you got a turbo timer on the car? Quote Link to comment Share on other sites More sharing options...
Swampy442 Posted October 13, 2020 Share Posted October 13, 2020 Have you cleaned the valve out? Checked for any air leaks? Quote Link to comment Share on other sites More sharing options...
Samurai 20V Posted October 13, 2020 Author Share Posted October 13, 2020 Random, but have you got a turbo timer on the car? No Mike, haven't had one ever.. - - - Updated - - - Have you cleaned the valve out? Checked for any air leaks? I did clean it out not long ago. Got full boost so don't presume any air leaks.. Quote Link to comment Share on other sites More sharing options...
alxns Posted October 14, 2020 Share Posted October 14, 2020 Hi Samurai There's a "stop" on the throttle body and the throttle doesn't close properly. The IAC valve (idle stepping motor) will not take it into account since the ECU thinks YOU are opening the throttle. It sorted my high idle issues but that was ages ago. I think the TSRM has the proper adjustment procedure. In short, it's probably a mechanical issue rather than an electronic one. Quote Link to comment Share on other sites More sharing options...
Swampy442 Posted October 14, 2020 Share Posted October 14, 2020 I did clean it out not long ago. Got full boost so don't presume any air leaks.. Never assume, check. Full boost doesn't mean you haven't got a little leak somewhere Quote Link to comment Share on other sites More sharing options...
Samurai 20V Posted October 14, 2020 Author Share Posted October 14, 2020 Hi Samurai There's a "stop" on the throttle body and the throttle doesn't close properly. The IAC valve (idle stepping motor) will not take it into account since the ECU thinks YOU are opening the throttle. It sorted my high idle issues but that was ages ago. I think the TSRM has the proper adjustment procedure. In short, it's probably a mechanical issue rather than an electronic one. Mate, I think you are right.. I checked the logs, when the idle was high, the throttle was showing up to 2.7% open.. Checked the throttle cable, the coating is perished quite badly. It may not be the cause, but to trouble shoot, will replace it. If that does not cure the issue, will move to the throttle body itself.. Thanks Quote Link to comment Share on other sites More sharing options...
Samurai 20V Posted October 14, 2020 Author Share Posted October 14, 2020 Never assume, check. Full boost doesn't mean you haven't got a little leak somewhere Thanks Swampy good advice, will give it a once over just to be sure in parallel with replacing the throttle cable. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.