Toyota Lean Burn?
 

I am sure this question has been asked before but i can not find any specific answer.

Do any of the Toyota 4-cyl. engine have a "lean burn" feature?

I am just really starting out at this stuff, but i have managed to get 2 tanks @ 40mpg~ in my corolla. Well, not since it has gone below freezing.

The wikipedia page has some info on a toyota lean burn. I believe its a different engine then your corolla.

Could you give me that link id like to look into that.

The only Toyota engine I've heard has lean burn was the 7A-FE, the 1.8L engine that preceded your 1ZZ-FE. It was only available as a lean burn engine overseas. I haven't ever really seen any good info on it though.

First search is free
wikipedia
a ecomod thread
1zz info

Thank you xntrx for the links i will look over them when i get the chance. i am thinking i may try a grill block out while these temps are below freezing.

Grille blocks: they're not just for winter anymore!
 

Hopefull you have a ScanGauge or equivalent so you can monitor coolant temps accurately.

Most people can leave a partial grille block on year round.

I do not have a scan gauge or the funds to purchase such a device, my car does have an on board analog temp gauge, it consistently sits at about 3/8 of the gauge. there are no numbers on the thing.

The onboard gauge is not adequate for detecting overheating. Your radiator fan could be running like crazy and that gauge won't budge.

If you want a real cheap solution, wire a 12V light to the radiator side of the radiator relay. That'll tell you if you're getting too hot.

I would still recommend getting a gauge. It'll pay for itself fairly quickly.

For what it's worth, in California "winter" (aka 70F) the coolant temp needle takes forever to finally move past 1/4 of the way after the "C" on my MR2 with the same engine, and I have the grill blocked 75%. Torque tells me the temperature sits at ~75-80C and slowly rises from there if the car is not really moving. Now add 20C for hot summer temps, I think you'll be okay.