Guest martin169 Posted March 24, 2007 Share Posted March 24, 2007 i have a mk 4 supra 1994. a problem has rescently surfaced that sometimes after normal driving and either waiting at traffic lights or any occasion where the engine is just idling it suddenly looses power as if to stall, then it powers up again to around 1000rpm then settles back to normal idle speed. hope that makes sence. does any one know what might be the cause? has anyone had similar problems? whats the cure? it has just been surviced and had new fuel filters fitted. Quote Link to comment Share on other sites More sharing options...
steb9780 Posted March 24, 2007 Share Posted March 24, 2007 It's not just a quick drop of revs for something kicking in i.e. air-con is it? Quote Link to comment Share on other sites More sharing options...
RedM Posted March 24, 2007 Share Posted March 24, 2007 Is it an auto? Quote Link to comment Share on other sites More sharing options...
johnd-mkiv Posted March 24, 2007 Share Posted March 24, 2007 check your coolant level mate Quote Link to comment Share on other sites More sharing options...
Guest martin169 Posted March 26, 2007 Share Posted March 26, 2007 it is an auto, 1994 its not the a/c cutting in, the coolant level is ok. it has just been serviced by toyota. on the engine management computer it now says fault no 41 what ever that is. something to do with the ignition. any ideas anyone? Quote Link to comment Share on other sites More sharing options...
bondango Posted March 26, 2007 Share Posted March 26, 2007 41 is your throttle position Sensor. Your TPS adjustment may be out, or the TPS needs to be replaced. Quote Link to comment Share on other sites More sharing options...
Guest martin169 Posted March 26, 2007 Share Posted March 26, 2007 any idea of how much a new TPS costs? is it easy to replace and where is it? is this a common problem with supras? Quote Link to comment Share on other sites More sharing options...
pistonbroke Posted March 27, 2007 Share Posted March 27, 2007 tps is easy to replace. Look where your throttle cables meet the inlet manifold, there is a circular black sensor on the opposite site of the plenum with wires going to it. Thats it. Quote Link to comment Share on other sites More sharing options...
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