quasar

how did that not make sense?

inanimate_object

Well, as far as I knew the only difference between a hot cat and a cold one is a cold one does nothing for emissions, which has no effect on your engine either way. And I've no idea how having fuel injection would impact what you said to the extent of not needing to warm up your car at all

quasar

Well in my case my choke is stuck open, I have to nurse it till it can run on it's owne. Injection systems avoid the choke electronicly so the driver dont have to think about that stuff. From a mechanics point of view as how this topic started I could see him recomending warming up the car for many reasons. That was just some of my opinions. But a warm cat with injection will switch the ecm to drive mode insted of cold mode with the O2 sensor. But that only is somewhat true with OBD2 systems, not OBD1 or carbed cars. Guess it all depends on the persons car...

j9fd3s

um i dunno what that means but in CA where it gets down to maybe 40F, i dont need the choke at all, in fact it usually gets removed. car will idle fine after 10-15 seconds of running, and it drives a little off for about 30-45 seconds, but you dont need to sit there and warm it up....



all the efi rotaries are in closed loop @65C...

inanimate_object

As far as I'm concerned, on road cars as soon as the thermostat starts to open the engine's at operating temp and you're not getting problems due to thermal expansion. To be honest though that's never meant not driving, just not putting undue stress on the engine - regardless of injection system.

diabolical1

seeing that his car is an '80, if the car is totally stock, then i suppose the reason he was told to warm it up by his mechanic may be the thermal reactor. i'm just offering a guess. if he has already put on a header and exhaust, then i can't see why he would tell him that. in either scenario, it's not necessary to have it sit until warm. just drive it easy as Jeff20B already stated.



other than that, using the choke will depend on your climate, the season, mods and personal choice. i used my choke in the winter - the deadly cold days - when i was back home in New York. the cars simply wouldn't idle until warm and the choke kept me from having to do my retard's version of left-foot braking when coming to stoplight. the only exception was one of my cars in which my friend had modded the carb (Nikki) for me. that thing would start in any weather and idle within 5 minutes. unfailingly!



now that i'm in Florida, even when the temperatures got into the teens, my Dell'Orto had minimal complaints and i only used the choke on occasions.