Loss of power while driving

rammons577

New Member
Joined
Jun 12, 2020
Messages
5
Location
SC
2003 4.0 L Automatic 118,000 miles

On hot days in the summer, I will be driving along great at 35-40 mph and all of a sudden the Jeep seems to have lost power. I push hard on the gas as really nothing changes. After the Jeep sits for a while, everything is back to normal until everything heats back up after 20 min or so of driving. Only happens in the summer though never in the winter. Any thoughts? Already took it to the transmission shop to make sure that was not the case. Transmission looked perfect they said and no evidence of it overheating. Thanks guys! Really enjoy this forum!

image.jpg
 
No lights or codes. I’ve heard everything from my local Jeep club Facebook page from fuel pump and collapsed fuel line, crankshaft position sensor, clogged cat, heat soak. Wondering what to tackle or eliminate from the equation first!