right have you got an na or tt , if its a na and has main lead coming from dizzy cap to small coil fixed to wing its that coil , ,, 36 pounds ish from eurocarparts , , my friend came to me a while back with an na supra , , my wifes got one now also but long story short ,
symptoms , from cold car would start on the button everytime ,
but after a short distance driving could tell the car wasnt burning all the fuel , even smellt like unburnt fuel in the exhaust ,
, when he got to any destiation even 10 mins drive away ,
after returning to the car ,it took ages to start , , the longer he drove it,,
the longer he would have to wait untill it would fire up again ,
It was the coil , all along ,as it would heat up and spark would weaken the hotter it got , as soon as you turn it off it wouldnt fire properly again untill it cooled ,
i looked at the coil to see white powder residue , in the plug connector lead to dizzy cap and the coil itself , classic sign of arching , electrical term for the current not getting to where it needs to ,
changed the coil and car now runs perfect and all issues gone , no fault codes were ever logged either , hth paul