T-Stat

[SVO]

Who sells a 180 deg. T-stat for the 1991 4.0 motors????

 

[kps36]

I used a Stant 195, which I think is what you really want. Make sure you get the O-Ring gasket too, some have it...mine did, just make sure.
Oh, got it at NAPA, I think Pep Boyz also has the Stant brand.

 

[JGAMBLE]

I just got one at Advanced auto parts Saturday. Truck runs much cooler, the 195 is good for winter, but that's about it.

 

[BradE.]

The 195 degree is the factory temp. By installing a cooler temp T-Stat (in a stock motor) your are essentially forcing your truck to run rich.

 

[SVO]

Thanx for the help, off to go get one, as for the pooter thinking it's cold I have that problem "tricked"

 

[MyExpWork]

The 195 degree is the factory temp. By installing a cooler temp T-Stat (in a stock motor) your are essentially forcing your truck to run rich.

I have a 180 T-stat and last time I pulled my spark plugs they were white, doesn't that mean that its running lean? Maybe I have other issues.

Brian

 

[JGAMBLE]

white indicates a lean status. Almost every fuel injected Ford I've owned has had a slight whitish tint to the plugs, go figure