I fixed my wrangler problems by lifting the radiator cap and installing a new 2105 jeep with the 3.8, much better jeep IMHO

1941 Taylorcraft
1968 Charger
1994 Wrangler
1998 Wrangler
2008 Kia Rio
2017 Jetta

I didn't do 4 years and 9 months of Graduate School to be called Mister!