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.

I am losing engine power due to a wire that has come loose at the ecm connector in the engine compartment. I need the part that all the wire feed into and my mechanic has told me that it is the J2 plug or connector that he needs to fix my car.

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.

Hi, I have a 2003 saturn vue with 58000 miles on it. It is a 2.2l cvt awd. The transmission won't allow the vehicle to increase speed past about 30 mph. there is no dtc & no check engine light.

I found the link on the web and decided to follow it.
http://www.avtoakpp-cvt.com/preparation%20page1.htm
It seems I had some pressure leaks so I decided to pull the trans and put in a rebuild kit.


I pulled the trans and did an inspection. I put in a Master Kit w/Bonded pistions in. This is a link to the site for the parts that I replaced.

http://www.makcotransmissionparts.com/Saturn-VT25.html

# 33006J Master kit, SATURN VT20/25 2002-05 with bonded pistons
Includes: overhaul kit, friction clutch plates & standard steel plates and bonded clutch pistons.
Note: This contains piston for the Forward & Reverse Clutch only.
This Transmission contain 1 - sided frictions / steels The chain looked good. I did not see any obvious damage. The belt also looked good. I also replaced the speed sensors while I had the valve body out.

I put the trans back in with new cvt fluid & additive. Went on a test drive and it still is doing the same thing.

It seems like the pulleys aren't changing ratio. The rpms just keep increasing. No dtc or check engine ligts but I didn't drive it that far, just down the road and back.

Was wondering if anyone had any suggestons or advise on what I should try or check next. I'm leaning towards the valve body or the variator pulleys and maybe a new belt too. It appears my pump is good. I've had good solid high pressures when I check them following the info I found on the avtoakpp-cvt website.

Thank you for your time.

Sincerely,

Arnie

ps I plan on donating at my next response. Thank you for your time, your knowledge is greatly appreciated.

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.

2003 saturn Vue check engine/low power lights on.Will not go over 30mph

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.

I have a 2003 Saturn Vue 2-wheel drive 6-cylinder vehicle. One day I was driving down the road and all of a sudden she noticed the instrument panel gauges give out (RPM, Speedometer, etc) and went to zero. My power steering also failed when I turned the car off then back on. Now when I start it in the morning when it is cold out, the problem is gone. But when it is warm out the car starts whit the same trouble, the check engine light, check engine soon light, brake and the ABS lights all come on and stay on with no power steering. When it is cold out there is no trouble. Is there a sensor or computer chip that is controlling all of these electrical devices possibly under the dash or some where effected by temperature. I'm a single dad of 3 so $ is tight all the time so i just can't take it in. Your help will be greatly appreciated. Thank you

Did you find out what was causing this, because I have the same problem and Saturn tells me that nothing is wrong, if upon restart all the lights go off, supposedly indicates no problem. Something is definetely wrong, as this has now happened 5x, the last time not having power sterring was more then a little scary in the situation I was in.

i had it fixed at the dealer took 1/2 day. it was a burnt computer (control) Boby $190.00
# 19116638 Module KI N 304.85
plus programing.

I have the same problem 2003 vue no dash instruments, no power steering, are you sure it's the body computer module. I looked this thing up, over 300.00 it's not cheap for this car. Can anyone confirm this solution. Thank you.

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

Please let us know what happens.

Cheers, Ken

In "D" and "I" the auto is very sluggish. starting and shifting. In "L" however, the auto is pretty decent. We have had it serviced regularly and religiously. Any thoughts?

thnx - richard

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.

Hi Louie, thnx for the reply. I do not have the codes yet. On Monday I will probably go to my mechanic. The purpose of this inquiry was to get some edification. A guide for a budget. I am guessing this is more than l fluids and hoping that we are not looking at a new or rebuild.

In Neutral the engine seems to run fine and the sound does not change when we put it gear, other than the normal. However, when we accelerate there is nothing to speak of. Certainly not what we are used to. It seems to be transmission, but I really do not know much about cars.

It is an automatic. You pocked up on that, I'm sure.

best - richard

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.

Hey Louis, Now this has happened a few times in my life, but it always baffles me, since the car is a machine and not organic. The problem seems to have gone away. We have been driving the car since the last note without a problem. The light is off and the engine and tranny seem to be fine. Go figure!.

Thnx for your response. Next time I will check codes or otherwise have a stronger knowledge base (if possible) before writing.

best - r

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.

Hey Louis,

I have some codes for you P1791, P0056, P0161, P2138, P0700. The mechanic suggested that mechanically the car is sound but the problems with certain sensors may be affecting the performance. Makes sense to me, but I am a woodworker!

best - r

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.

starts runs rough smooths out 3000 rpm. has codes p0440 evap emissions, p0481 cool fan circutit 2, p1599 a/c press. switch low. p1512 batt sense line 2, p1682 charging system low. the reduced power light is on with SES light. A new $550 cat. converter was installed. The vehicle will not go over 35 mph. This is a drive by wire system. It does not seem to make any difference if you are half throttle or full throttle. could it be the throttle position sensor on the pedal?

I have a 2002 Vue my Vue did that before. It was when I was towing something heavy. I read the manual and it said that there was a sensor that notices towing and prevents your Vue from going over 35 to prevent damage to your Vue. Have you towed anything w/ your Vue prior to this problem? If so maybee the sensor got stuck and is still thinking that you are towing something. I hope this helps you!

My truck has been running fine. No symptoms of ANYTHING wrong. Today I started it and when I put it in reverse it shook violently. When I put it in drive, the same thing. There is very low power and I have to really press on the gas to make it go. I was able to drive about 5 miles going 30 MPH to the garage. Now I am waiting..any thoughts?

without hearing some codes hard to say whats going on.so its a 4 cyclinder vue auto?if it is hopefully its not the side cover on the transmission that went bad.was the engine running bad or was the transmission just sliping causing it to shake?let me know what they find as far as engine codes and all that.
louie

I was told that it is a cracked coil pack. They attempted to explain it to me but I just undesrtand it's an ignition issue. AM I correct? And I also understand that he is charging me 400 bucks...yikes. Thank you for responding to my question. Do you have any thoughts on this new information?

yes the coil is the ignition there is a coil pack on that with two coils molded together u cant change just one.i have never really seen them crack but have seen them fail he is probably just saying it failed.but it makes sense i know the coi packs arent cheap then labor to install it and then diagnose it it all adds up fast.well let me know how it comes out.
louie

Thank you so much for your input and help. I understand what is wrong now thanks to you! Thanks again! Tammy

Your very welcome glad I could help you.don't forget to leave ne feedback that would be greatly appreciated.
Louie