180 T-Stat

[Minitrucker]

Changed to a 180 since it is getting to dam hot out and hoping to keep the engine cooler. Since I did my truck feels slugish and slow, have to give more gas to get it goin. Any link between the two?

[Matt 4.3 TBI]

A 180 shouldn't cause that. There's been quite a few reports of 160's keeping OBD-II computers in open loop, makes the ECM think it's still warming up.
Try unplugging the battery cable for a few min to clear out the short-term fuel trim and driving normally for a day or two. That should help clear it up.

[Minitrucker]

What about pulling the ecm fuses?

[Matt 4.3 TBI]

Heh, whatever it takes to clear out an OBD-II. I'm spoiled by ODB-I. I just have to remove the negative cable for about 60 seconds and it's cleared.

[Minitrucker]

Wish it was that easy for OBD-II.

[Maxx]

What you pull 2 fuses for obd-II... i think thats pretty easy.

[Minitrucker]

Ya I guess that is easy.

[Minitrucker]

What temp does OBDII go into closed loop?

[Sparky2263]

WARM-UP CYCLE
The PCM uses warm-up cycles to run some diagnostics and to clear any diagnostic trouble codes (DTCs). A warm-up cycle occurs when the engine coolant temperature increases 22°C (40°F) from the start-up temperature. The engine coolant must also achieve a minimum temperature of 71°C (160°F) . The PCM counts the number of warm-up cycles in order to clear the malfunction indicator lamp (MIL). The PCM will clear the DTCs when 40 consecutive warm-up cycles occur without a malfunction.

(Courtesy Alldata) ;)

[joker2040]

I haven't had any problems out of my 180.

[Minitrucker]

Does a 180 begin to open at 180?

[JROD©™®]

WARM-UP CYCLE
The PCM uses warm-up cycles to run some diagnostics and to clear any diagnostic trouble codes (DTCs). A warm-up cycle occurs when the engine coolant temperature increases 22°C (40°F) from the start-up temperature. The engine coolant must also achieve a minimum temperature of 71°C (160°F) . The PCM counts the number of warm-up cycles in order to clear the malfunction indicator lamp (MIL). The PCM will clear the DTCs when 40 consecutive warm-up cycles occur without a malfunction.

(Courtesy Alldata) ;)

lol...quoting your sources now are we. well hell...i wasn't born all knowing...do i have to quote everyone who taught me everything... ;)

[Sparky2263]

Well Jrod,kinda like this. Since working on my first Briggs and Stratton in 1971 (I was 8) I figured out real quick I better have some resources available. Being a good reader most of my learning came from looking in a book and putting it to practice. Learned to ask for help about the same time. Both have served me well in my career of choice and I've managed to make a decent living.

Bottom line? I don't have to know everything. I just gotta be able to find out anything. That, I can accomplish. ;)

[JROD©™®]

same here, i read and i do. i also "paraphrase" my practice so i can better recall and relate what i'm doing to myself, rather than have to keep referring. what i don't know i look up. i commented though because i recall a discussion recently where someone said we needed to quote our sources if we got our information from elsewhere. in that discussion i was going to make the comment that then everyone needs to cite and reference everything because no one here was born knowing everything, it was learned...but i didn't comment. in college i got called out in technical writing...she said i didn't cite my sources. i said i 'am the source...i taught myself this!!!

[nomaboy]

i run a 170 in mine with no problems