Drive Cycles for Readiness Complete?

[crazyhorse]

so i replaced the 160 thermostat with stock 187 degree t stat, put spark plug spacers on downstream o2 sensors (post cat), and got walmart H7 platinum AGM battery seemed like good deal for 850cca and gel they said… anyway, STILL wont complete o2 sensor monitor and cat monitor , but its only been 2 drive cycles

have noticed:
1) elec fan comes on for awhile after driving, just for a couple of minutes, read somewhere 220 is the trigger.
2) the streamed data on upstream and downstream o2 sensors on both banks used to be pretty identical values — now the downstream sensors higher value and seem to lag changes in front sensor slightly - i read this is good guess we’ll see
3) the car drives about 20 degrees hotter. it used to always be dead center on. guage now 15-20 to the right
4) the car runs MUCH more smoothly, idk if its heat or the rear o2 spacers (read they don’t matter but maybe they do?), faster acceleration, chirped in second gear easily — seems stronger, sounds better too like its purring not sputtering
5) car gets to 190 much more quickly

thank you for suggestions!

will post back on monitor readiness and fuel efficiency (see if i get better than 14 with 70% highway miles)

she just runs amazingly, best since my mods, same gas station, same weather — in did 3 things all at once and something mattered. happy camper thinking i might be able to do w/o SC running like this

THANK YOU

[crazyhorse]

so i replaced the 160 thermostat with stock 187 degree t stat, put spark plug spacers on downstream o2 sensors (post cat), and got walmart H7 platinum AGM battery seemed like good deal for 850cca and gel they said… anyway, STILL wont complete o2 sensor monitor and cat monitor , but its only been 2 drive cycles

have noticed:
1) elec fan comes on for awhile after driving, just for a couple of minutes, read somewhere 220 is the trigger.
2) the streamed data on upstream and downstream o2 sensors on both banks used to be pretty identical values — now the downstream sensors higher value and seem to lag changes in front sensor slightly - i read this is good guess we’ll see
3) the car drives about 20 degrees hotter. it used to always be dead center on. guage now 15-20 to the right
4) the car runs MUCH more smoothly, idk if its heat or the rear o2 spacers (read they don’t matter but maybe they do?), faster acceleration, chirped in second gear easily — seems stronger, sounds better too like its purring not sputtering
5) car gets to 190 much more quickly

thank you for suggestions!

will post back on monitor readiness and fuel efficiency (see if i get better than 14 with 70% highway miles)

she just runs amazingly, best since my mods, same gas station, same weather — i did 3 things all at once — and idk which but something mattered. happy camper thinking i might be able to do w/o SC running like this

THANK YOU

[jtblckmaro]

Originally Posted by crazyhorse

no pending codes either got a scanner that checks --
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

next steps:
1. replace battery
2. remove performance 165 degree thermostat (some site said heating up a little more slowly might matter for the drive cycle)
3. install spark plug extenders on rear o2 sensors

thank you for all ur help! will check back. no codes, no pending codes, and o2 sensor monitor / cat converter monitor BOTH wont complete, making me nuts - read that the cat wont complete without the o2 so focused there first

Did you ever get your monitors to complete?