1500 5.2L short on power
2001 1500 5.2L 169k miles
Seems to be a bit short on power. Going up a medium grade hill, it's having trouble holding 50-60mph. Pulling a 21' boat, it isn't able to get above 40-45mph.
Also, it's getting between 10-12 mpg which seems a bit worse than it should be.
I wasn't able to locate any vacuum leaks around the passenger side of the engine using throttle body cleaner.
Truck does have the wild vents issue, and I am going to install new check valves to fix that problem. Would this also be causing a loss in power?
Don't see any oil when looking down the valve body, so I don't think there's a plenum issue. Although by checking with a magnet, I do still have the steel plate installed.
I disconnected the upstream O2 sensor, and it does seem to have a bit more power, so not sure if the Cat is going bad, or if thats just extra power that I'd see from increasing that much flow in front of a functioning Cat.
I've been reading that a bad map sensor can cause loss of power, and other issues, so I'm going to check that next.
Update: Checked Map Sensor with a voltmeter, and it seems to be operating within spec. Plus I'm not getting any Map Sensor codes.
It has had a P1740 code for quite awhile, which is the a Torque Converter or O/D solenoid, however it generally seems to shift fine.
Any other ideas? Thanks.
Last edited by Dodge33; 07-11-2013 at 02:47 AM.