Engine has power loss

Can you verify the codes, none found ?

This guide will help us fix it

https://www.2carpros.com/articles/engine-has-low-power-output

Please run down this guide and report back.

If you need the entire connector, there's two ways to get it. The expensive way is to buy a new wire harness from the dealer, if it's still available. The common way is to snip one off a similar vehicle in the salvage yard, then splice the wires.

Usually a loose terminal can be replaced individually or repaired. The GM dealers have large kits with every type of terminal.

I worked for for saturn and have repaired so many of these transmission I lost count. When you scanned it for codes did you use a scan tool that can read transmission codes on this vue?At first when these vues came out we were making repairs like replace the belt etc but saturn found that making repairs like you did clutches pistons etc was the wrong way to go about it. They found when they had a belt failure it damaged the sheeve pulleys also when they had a piston/clutch failure it damaged the belt and the sheeve pulleys. So the best repair with the fewest comebacks was to replace what is called the side cover which contains the input and output shafts with belt sheeve pulleys clutches etc. That is only repair we were allowed to do for those issues. How did you check the pressure it takes a special gauge with the flat banjo fitting to clear everything and a tech2 scan tool to command the pressure control solenoid to .02 amps at 1000-1500 rpms you should have 652-798 psi and pressure control solenoid commanded at 1.0amps at idle 152-286 psi. What were your readings and how did you get them?Also I have seen people rebuild those transmissions and they wouldnt go over 30 mph the rpms would go up but they wouldnt change sheeve ratio/gears. The rule you have to follow when taking the transmission apart is valve body comes off first when taking apart and goes on last when putting it back together. But you can still mess up doing it that way on the valve body there is a arm coming off that is attached to your sheeve ratio solenoid that arm and soleniod moves the sheeve/pulley into the different sheeve ratios. When putting the valve body back on last its a must that the arm goes into the square hole below it so it change sheeve ratios. If it doesnt it will do what your transmission does. If you want to donate like you were saying you have to start a new question with a subject of donation. Then put for the question here is a donation for a question saturntech9 is helping me with that way I will get credit for it. All the responses for this question please post here so I will get a email telling me you have posted a response.

https://www.2carpros.com/articles/service-engine-soon-or-check-engine-light-on-or-flashing

Have the computer scanned for code/s-you have a problem within the engine management system that caused the CEL to turn on-This is your starting point of diagnosis,finding out what's going on.

Yep, this was the fix to the problem which was common on these cars.

Please let us know what happens.

Cheers, Ken

First of all thank you so much for your donation. SO the transmission shift's good?Or is there a problem with the shifting?You say it's sluggish meaning the engine correct?Also could you please go to a auto part's store like auto zone and have them scan your car for code's if you have any please post the code number's. Let me know what you find.

If were talking about a engine power issue and the shifting is ok then were talking about an engine issue most likely. Let's start with what code's you have if you have any. Let me know what you find with the code's.

Those went away on there own problem's are both baffling and usually come back eventually but let's hope for the best with yours. Keep me posted and check code's if it happens again.

P0056 is The heated oxygen (HO2S) bank 2 sensor 2 is threaded into the front exhaust pipe directly behind the cylinder 2, 4, 6 pre-converter (cylinders 2, 4, 6 are closest to front of dash). The sensor is used by the ECM to determine the oxygen storage capability of the pre-converter, fuel trim biasing (time held lean or rich) and certain techniques used to diagnose DTCs associated with the pre-catalyst oxygen sensor. The sensor is equipped with a heater to provide additional heat to speed up sensor activation time. The ECM controls the heater by supplying a ground to circuit 5036. The ECM will pulse the heater until it has determined exhaust pipe moisture has evaporated (engine run time between 0 and 200 seconds ). After that, the ECM will command the heater On at a 100% duty cycle for 10 seconds , after which it will turn Off the heater for a very short amount of time to test for an open/low voltage condition. The ECM will continue to do this unless the exhaust gas temperature exceeds 850 °C (1562 °F ). The heater will be pulsed if this limit is exceeded. When the heater is commanded Off (circuit not grounded), the voltage level at the ECM should be high (ignition voltage). When the heater is commanded On (circuit grounded), the voltage level at the ECM should be low. The ECM heater feedback circuit uses a pull-up voltage (2.6-4.6 volts ), which allows the ECM to individually differentiate between an open, short to ground or short to voltage. DTC P0056 will set if the ECM detects an open heater control circuit when HO2S bank 2 sensor 2 is commanded Off with the engine cranking/running.

DTC PARAMETERS
DTC P0056 will set if HO2S bank 2 sensor 2 heater feedback voltage is between 2.6 and 4.6 volts (ECM pull-up voltage) indicating an open circuit when heater is commanded Off when:

* Condition exists for longer than 0.5 seconds
* Engine speed is greater than 40 rpm
* Main relay voltage is between 8.0 and 18.0 volts

DTC P0056 diagnostic runs continuously once the above conditions have been met.

P0056 is a type B DTC.

DIAGNOSTIC AIDS
To locate an intermittent problem. use Scan tool to monitor DTC P0056 LAST TEST just after the engine is started. The ECM will pulse the heater On and Off from anywhere between 0 and 200 seconds , then the ECM will turn it Off briefly every 10 seconds . Wiggling wires while watching for a change from PASSED to FAILED during the Off command may locate the area where an open in the wiring may exist.

Heater element resistance: 7.0-20.2 ohms .P0161 is The heated oxygen (HO2S) bank 2 sensor 2 is threaded into the front exhaust pipe directly behind the cylinder 2, 4, 6 pre-converter (cylinders 2, 4, 6 are closest to front of dash). The sensor is used by the ECM to determine the oxygen storage capability of the pre-converter, fuel trim biasing (time held lean or rich) and certain techniques used to diagnose DTCs associated with the pre-catalyst oxygen sensor. The sensor is equipped with a heater to provide additional heat to speed up sensor activation time. The ECM calculates the efficiency of the sensor heating element by calculating the internal sensor (NOT HEATER) resistance based on actual current and signal voltage measurements on circuit 1670 after the engine has been running a certain length of time. As temperature increases, the sensor internal resistance will decrease. The ECM compares modeled sensor resistance values to the measured values based on the calculated sensor temperature (exhaust gas temperature). If the heater is working properly, the internal sensor resistance will decrease at a certain rate based on the exhaust gas temperature. If the resistance takes too long to decrease or is too high after a certain amount of engine run time, the heater is assumed to be heating insufficiently. DTC P0161 will set if the calculated internal sensor resistance is too high after a certain length of engine run time indicating an inefficient heating element.

DTC PARAMETERS
DTC P0161 will set if the HO2S bank 2 sensor 2 calculated sensor resistance (based on the actual signal voltage and actual signal current) is greater than 63 ohms when:

* Engine run time is greater than 10 seconds
* Exhaust pipe moisture has evaporated (calculated engine run time between 0 and 200 seconds )
* Calculated converter temperature is between 330 and 585 °C (626 and 1085 °F )
* Main relay voltage is between 10.5 and 18 volts
* No HO2S bank 2 sensor 2 heater circuit DTCs have been set

DTC P0161 diagnostic runs continuously once the above conditions have been met.

P0161 is a type B DTC.

DIAGNOSTIC AIDS
If DTC P0160 is also set, diagnose that DTC first. An open in the sensor signal or sensor return may set this DTC.

Make sure no corrosion is present in the HO2S bank 2 sensor 2 harness connector and that all terminals (heater AND signal) are contacting correctly. If OK, replace the HO2S bank 2 sensor 2.

Heater element resistance: 7.0-20.2 ohms

I would start with the code p1791 first with the bullitine that will cover all your code's except your o2 sensor code's.I also emailed you some info let me know what you find.