Installed 195F Coolant Thermostat ... Reset ECU?

[cfg83]

Hello -

My mechanic just installed a higher temperature thermostat for me. Should I disconnect the battery in order to allow the computer to generate new defaults?

Thanks,

CarloSW2

[omgwtfbyobbq]

Not really sure about whether it needs to be done, but there should be a fuse you pul and leave out for a minute or so (actually more like 30s) to reset your ECU.

[rh77]

Originally Posted by omgwtfbyobbq

Not really sure about whether it needs to be done, but there should be a fuse you pul and leave out for a minute or so (actually more like 30s) to reset your ECU.

I always, after every mod folks recommend to reset the ECU. One method is to disconnect the negative battery terminal for a half-hour, or locate the ECU fuse and remove it for a duration (prob half-hour). I usually do the battery, but the drawback is:

1. You lose your radio presets
2. If you have an adaptive automatic transmission, sometimes it has to relearn your driving style.

ECU Fuse: Drawback: finding the right one and pulling it.

RH77

[Compaq888]

Current auto transmission are reset separately. SO resetting the ecu will do nothing to your transmission. Only affects engine. If you want to reset the transmission then reset the tcu.

[Matt Timion]

Originally Posted by Compaq888

Current auto transmission are reset separately. SO resetting the ecu will do nothing to your transmission. Only affects engine. If you want to reset the transmission then reset the tcu.

Are you implying that the automatic transmission has a mind of it's own? You DO realize that it's controlled by the ECU, right?

[Compaq888]

Originally Posted by Matt Timion

Are you implying that the automatic transmission has a mind of it's own? You DO realize that it's controlled by the ECU, right?

yes it has a mind of it's own. the TCU is more in charge of the transmission.

[onegammyleg]

Hi cfg83

I dont think its needed to reset the computer.
Within a short time it will have addapted to the new temp.

[Matt Timion]

Originally Posted by onegammyleg

Hi cfg83

I dont think its needed to reset the computer.
Within a short time it will have addapted to the new temp.

[cfg83]

Originally Posted by onegammyleg

Hi cfg83

I dont think its needed to reset the computer.
Within a short time it will have addapted to the new temp.

Ok, this is good to hear. I went to the SaturnFans website, where I already have a picture of my fusebox map :

http://www.saturnfans.com/photos/sho...0/ppuser/20905

After trolling around there, I guess it's the "pcm b" fuse for me, not an ecu fuse.

If the car adapts, that's fine with me. Patience is my one and only virtue.

CarloSW2

[bowtieguy]

huge, ancient bump!

when i tried to purchase a new thermostat for my civic, there were no 195s in stock, so i bought a 180. the car runs well into the mid 190s(and beyond), so i guess i'll not reset the ecu!