Loss of power and bad gas mileage

One suggestion,and that,s if you have not done it,have you changed the fuel filter lately,it sound,s like it may be starving for fuel,if not filter ,clean the throttle assembly may help.

Isn't the filter located on the fuel pump? Is there a fuel pressure testing port?

There is a inline filter,ans a sock filter at the pump,and you can test the fuel pressure at the fuel rail,there is a fitting for this there.

filter,

So I need to drop the gas tank regardless. Cannot find the fuel pressure port on the fuel rail. Do you know where that is located?

Im having the same problem was wondering if you have found the problem

Did you get it fixed and what was the problem. I have spent 300 dollars on chasing parts .

Mine in shop now suspected clogged cat converter

The symptom you describe is caused by poor engine performance. “Suspected clogged cat” means the mechanic hasn’t bothered reading either the Chrysler or Allpar service info. Should have measured the exhaust back pressure directly, no “suspected” part swapping required. The list of things to eliminate before changing the most expensive part of the car that could possibly be the cause is rather long; spark, fuel pressure, vacuum, plugs, wires, injectors, compression, intake manifold gaskets, map sensor, throttie position sensor, intake air temp sensor, crankshaft position sensor, transmission fluid type and fill level, input and output shaft speed sensors on transmission, as well as actually testing the exhaust backpressure at the manifold port.

How about the pcv valve It can cause poor performance when not working properly It vents out lower crankcase gases If plugged the oil in the pan can be drawn out past the rings causing oil consumption

On a 2006 with 120,000 miles there are plenty of choices, but the factory catalytic converters almost never fails. With a scan tool, look at the fuel trims at idle and running flat and running uphill. If the shift points on the transmission seem peculiar then the loss of power is significant. It’s at the right mileage for the intake valley gasket upper intake gaskets, and fuel injector o-rings to need changing. Of these the valley gasket is likely to be the most significant. It can also cause a coolant leak. Change the air filter, check the pvc hose, check the fuel pressure and check the voltage difference between engine ground and battery - . If all of those are good then do the intake gaskets, spark plugs and wires and valve cover gaskets all at once because the second two require only 20 minutes each in the middle of the intake gasket job when everything is wide open.

Your problem is catalytic converter,,Follow this Step..First buy a cataclean and only put a gas 4 gallon and drive ..at least 20 miles then after that put a special gas high octain and drive it empty the gas..now you will feel the clog on your catalytic converter disapear,,after that put a normal gas what ever you putting..then last buy seafoam mix it with your gas to clean all your gas cilynder all the junk inside the engine.. Thats all i can help my Friend..

I'm having the exact problem with my 2006 Grand Caravan. If I find the problem I'll post it.

My problem turned out to be a clogged catalytic converter. The symptom of the engine only going to 3000 rpm is that there is a limiter to keep the engine from racing while parked. So that was something that was working correctly.