further to my recent high idle speed thread

[Finnon]

I have been up to my local dealer and bought a set of plugs (as i figured they need doing anyway) a new throtle body gasket, and since i recently disturbed the iscv and cold start injector i bought gaskets for them aswell.

however. the other week i noticed that the temp gauge was not rising to the normal position(ive ordered a new stat). I cant recall wether it was doing this before when i first posted about high fuel consumption or not, as ive only been using the car on short journeys since this fuel/idle problem arose.

So im wondering, on an early na there is no lambda sensor. so would the engine be over fueling if it was never up to propper temperature? ie if the stat was broken. or is there other systems to control that?

 

[jetjock]

^ It's possible. It could also cause a high idle. You say the engine doesn't have a lambda sensor? I knew many cars in the UK come without it but I'm surprised to hear that's the case with any of these. So there's no catalyst either?

 

[Finnon]

no cat on early cars, on mine theres a small blanking plate where the lambda would be on a later car.

the laws on cats only came in i think in late 1992. possibly 1993 so almost all supras can pass our statutory yearly mot test without the cats being fitted.

of course later cars its all dependant on the tester. apparently they can insist on a cat being fitted.