NJ. Posted November 21, 2017 Share Posted November 21, 2017 Got two issues with my 94 TT Auto. Its been sat for 7 years and almost ready for an mot Its had new plugs, cambelt, vac lines, coolant change, idle control valve cleaned, throttle butterfly cleaned, fresh fuel, new fuel filter Runs fine when cold but idle bounced up and down 750-1000rpm when up to temp. No cel light, showing no faults ---------------------------------------------------------------------- Second issue, car will not lock or unlock with the buttons on the key (grey key with green lock button - jspec) Locks fine with the key in the door, and locks both doors Ive searched but cannot find any info on reprogramming / pairing etc Thanks, Nathan Quote Link to comment Share on other sites More sharing options...
Scooter Posted November 21, 2017 Share Posted November 21, 2017 (edited) You could check this pipe.....if it's off then it can cause a high idle, may be yours is perished leaking? (could be various things though) http://www.mkivsupra.net/vbb/showthread.php?318978-Hose-missing-off-power-steering-pump!&highlight=idle+power+steering Re the key sounds like you have an original central locking key, these are rare and most long since gone or stopped working.... http://www.mkivsupra.net/vbb/showthread.php?127723-Remote-locking-key&highlight=transponder+key http://www.mkivsupra.net/vbb/showthread.php?20338-Keys&highlight=transponder+key Edited November 21, 2017 by Scooter (see edit history) Quote Link to comment Share on other sites More sharing options...
NJ. Posted November 21, 2017 Author Share Posted November 21, 2017 Pipe is fine, i do have my boost gauge plumbed into that location Regarding the key, any reprogramming info? It has a fresh battery Quote Link to comment Share on other sites More sharing options...
NJ. Posted November 21, 2017 Author Share Posted November 21, 2017 If anyone can shed any light on this please do Ive treid messing with the temp sensors, unplugging the top single pin one stops the dash temp working, unplugging the lower two pin one puts the engine light on Unplugging the iacv when running and up to temp doesnt have any effect. Tried checking the resistance across the terminals and all seems fine Quote Link to comment Share on other sites More sharing options...
NJ. Posted November 22, 2017 Author Share Posted November 22, 2017 Quote Link to comment Share on other sites More sharing options...
rider Posted November 22, 2017 Share Posted November 22, 2017 (edited) For pairing this might be some use, from memory the ECU is under the passenger seat but my memory is fading. With the revs cycling between 750 and 1000rpm its not something innocuous like the a/c compressor cutting in and out? You can get rapid cycling on the a/c compressor clutch if the pressure in the system is low, high enough to beat the low pressure cut off but too low to prevent a vacuum on the inlet side which will activate the low pressure cut off. Edited November 22, 2017 by rider (see edit history) Quote Link to comment Share on other sites More sharing options...
NJ. Posted November 22, 2017 Author Share Posted November 22, 2017 Regarding the key info, thanks i'll give that a try. The ac is still hooked up but the front rad/ condensor and fan for it has been removed. Wouldnt have thought it would be that as its only when the cars upto operating temp that the revs start bouncing Quote Link to comment Share on other sites More sharing options...
NJ. Posted November 22, 2017 Author Share Posted November 22, 2017 Removed the remote locking ecu from under the seat. It has a blue connector and an aerial socket. Have removed the cover and there is no reprogramming button on the unit whatsoever, all the guides ive found are for the different style remote Here is what my key looks like Quote Link to comment Share on other sites More sharing options...
NJ. Posted November 22, 2017 Author Share Posted November 22, 2017 Removed the remote locking ecu from under the seat. It has a blue connector and an aerial socket. Have removed the cover and there is no reprogramming button on the unit whatsoever, all the guides ive found are for the different style remote Here is what my key looks like Quote Link to comment Share on other sites More sharing options...
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