I had a p0138 code that I finally cleared. Got 15 miles per gallon that it's advertised at in the city. It's bullshit. Driving anywhere near saying speeds and I've got a 4.7 with the all wheel drive and four-wheel disc brakes and 17-in wheels. I get about 10.5 miles per gallon. But it's a fun 10.5 mi per gallon. Two gallons a mile more than I got with the p0138 code. Starts cleanly idle smoothly and best of all that crisp V8 throttle response
I just bought a 2001 jeep grand cherokee truck, 60th anniversary edition, 8 cylinder engine with 4.7, it is in excellent condition, I hope I have good adventures, in "La Baja" Mexico