I have a 2005 dodge magnum, It fails to stay on, I have to press on gas pedal for it to stay on and run ok...once I let go can shuts off..sometime stays on but wanting to shut off with intake coming in and out...obd II reader said u2 sensor bank 2

do you have a check engine lite? sounds like throttle position sensor problem or fuel pump failing. have them checked.

did you see the o2 sensor readings, if it's dropping to zero, it will not stay running.
all causes of laen o2 will have to be ruled out befor replacing sensor.

Check for vacuum leaks. check fuel pressure. Post the code number that the scanner revieled.

what size engin, i'll run the concern on chrysler's tech service site.

Hey guys thanks for helping me out and leaving some comments...First yes I do have a check engine light on, obd II reader says P1379 i think but its O2 sensor bank 1 sensor 2. Its not the fuel pump I replaced it 3 months ago and am pretty confident its in good conditon.I haet checked reading on O2 sensor, can u tell me how to meter that?.I checked for vaccum leaks and everything seems to check out. I have a 2.7 liter, I did the Dash code, (hold speedometer button and turn key to on position at same time) my dash displayed H 2479, which i also believe means o2 sensor bank 1 sensor 2. Does car not give code for faulty TPS or MAP (MAF)? thanks for your help guys Ive been without a car for 2 months and cannot figure out, i need to be efficient and not buy unnessasary parts cuz money is tight

the cluster code should have started with a "p", for power train code, ie= p0139, ect..
here's bulletin on o2 sensor connector water intrusion.
see if you can get the p code from cluster, do this by turning on ignition"not start" 3 times and leave it on, on the thrid sweep," do not hold botton" this should cause the code to be displayed. let me know. mws919

GROUP: Electrical
DATE: June 30, 2005
2. Disconnect the O2 Sensor connectors and check for water intrusion and/or corrosion
in both upstream O2 sensor connectors at the center rear area of the engine.
a. If no water or corrosion is present, reposition the wiring harness connectors to the
outboard edge of the valve cover away from the center of the engine. Tie strap the
harnesses in place. If no water or corrosion was present, further diagnosis is
required. This bulletin does not apply.
b. If water is present but no corrosion, blow out the connector(s) and reposition the
wiring harness to the outboard edge of the valve cover away from the center of the
engine. Tie strap the harness in place.
c. If corrosion is present, perform the Repair Procedure.
PARTS REQUIRED:
Qty. Part No. Description
AR (2) 05161925AA Wiring, 4 way
AR (2) 56029049AA Sensor, Oxygen (2.7 & 3.5L engines)
AR(2) 56028994AB Sensor, Oxygen (5.7L engine)
SPECIAL TOOLS/EQUIPMENT REQUIRED:
05019912AA Mopar Wire Crimping Tool (or equivalent)
NPN Oxygen Sensor Socket (Snap-On YA8875 or equivalent)
REPAIR PROCEDURE:
2.7L and 3.5L Engines Replace O2 Sensor and Wiring Harness Connector
1. Remove the appropriate O2 sensor. Refer to the detailed removal procedures
available in TechCONNECT, under: Service Info, 14 - Fuel System, Fuel Injection, O2
Sensor, Removal.
NOTE: It may be necessary to disconnect the purge vacuum harness to gain better
access to the harness connectors.
2. Replace the wiring harness connector, using kit p/n 05161925AA. Refer to the detailed
removal procedures available in TechCONNECT, under: Service Info, 8 - Electrical,
Wiring Diagram Information, Wire, Standard Procedures, Wire Splicing.
3. Install the new O2 sensor using the appropriate part number. Refer to the detailed
removal procedures available in TechCONNECT, under: Service Info, 14 - Fuel
System, Fuel Injection, O2 Sensor, Installation.
4. Reposition the wiring harness connectors to the outboard edge of the valve cover
away from the center of the engine. Tie strap the harnesses in place.
5.7L Engine Replace O2 Sensor and Wiring Harness Connector
1. Release Fuel Pressure. Refer to the detailed removal procedures available in
TechCONNECT, under: Service Info, 14 - Fuel System, Fuel Delivery, Standard
Procedure - Fuel Pressure Release.
WARNING:THE FUEL SYSTEM IS UNDER CONSTANT PRESSURE EVEN WITH
ENGINE OFF. BEFORE SERVICING FUEL RAIL, FUEL SYSTEM
PRESSURE MUST BE RELEASED.
2. Disconnect the negative battery cable.
08-034-05 -2-
3. Remove the intake manifold. Refer to the detailed removal procedures available in
TechCONNECT, under: Engine, Manifolds, Manifold - Intake, Removal.
4. Remove the 3 engine harness retaining clips from the engine harness bracket.
5. Disconnect and remove the appropriate O2 sensor. Refer to the detailed removal
procedures available in TechCONNECT, under: Service Info, 14 - Fuel System, Fuel
Injection, O2 Sensor, Removal.
6. Pull the lower harness up to access the O2 harness connectors.
7. Replace the wiring harness connector, using kit p/n 05161925AA. Refer to the detailed
removal procedures available in TechCONNECT, under: Service Info, 8 - Electrical,
Wiring Diagram Information, Wire, Standard Procedures, Wire Splicing.
8. Install the new O2 sensor using the appropriate part number. Refer to the detailed
removal procedures available in TechCONNECT, under: Service Info, 14 - Fuel
System, Fuel Injection, O2 Sensor, Installation.
9. Reposition the wiring harness connectors to the outboard edge of the valve cover
away from the center of the engine. Tie strap the harnesses in place.
POLICY:
Reimbursable within the provisions of the warranty.
TIME ALLOWANCE:
Labor Operation No: Description Amount
08-90-98-90 Inspect and Reposition O2 Harnesses 2.7, 3.5,
5.7L Engines
0.2 Hrs.
08-90-98-91 Inspect and Reposition O2 Harnesses, Repair One
Harness, and Replace One Upstream O2 Sensor
2.7, And 3.5L Engines
0.8 Hrs.
08-90-98-92 Inspect and Reposition O2 Harnesses, Repair One
Harness, and Replace One Upstream O2 Sensor
5.7 Engine
1.2 Hrs.
08-90-98-93 Inspect and Reposition O2 Harnesses, Repair
Both Harnesses, and Replace Both Upstream O2
Sensors 2.7, And 3.5L Engines
1.2 Hrs.
08-90-98-94 Inspect and Reposition O2 Harnesses, Repair
Both Harnesses, and Replace Both Upstream O2
Sensors 5.7 Engine
1.5 Hrs.
FAILURE CODE:
3T Terminal(s) Corroded

no water corrosion, Im in phoenix az, we rarely see rain out here. after replacing o2 sensor last night car stayed on a little longer but still shut off, car revs itself from 500 rpms to 1200 rpms by itself, just up and down up and down...

still suspect throttle position sensor is part of the problem with the idle so ratical

did you try the key sweep, to check codes?

Try cleaning the Throttle position sensor and the Idle air control sensor using carb. cleaner. Sometimes when they get carbon build up on them it throws the idle off and the computer continuously tries to correct is, resulting in a up and down idle speed and sometimes stalling. (worth a try)

start with last code stored, of corse, and that means reading out codes correctly, if not it's all a guessing game and that means wasted $.

Let us know what your last scan showed. hopefully we can help you to make progress on this issue.

if you need a diag. chart for codes, let me know. mws919

www.topix.com/forum/autos/dodge-magnum

Ok guys so I took off the throttle positioning sensor cleaned it out and looking brand new, checked codes with scanner and now I got these codes.. P0058 and P0113...car is still stalling and very rough idle, checked plug connections, vacuum leaks even changing air filters...what do u guys think I should do next? Thanks for all your help guys...money is extremely tight so like I said before I can't afford to buy unnecessary parts...called dealer and new TPS is $200. If that's the problem ok, but I really don't wanna purchase it and it's not..thanks guys

call around for a shop that guarantees thier estimates and have them diag. the problem, and then install the part your self.
we can for sure tell you how to replace what ever part it is.
now if problem is still there, bring it back to shop, from there you shouldn't have to pay for the correct diag., it's one way to save some money.

Have these codes erased and then drive the truck to see which of these reappears. (the reasoning is that these codes could have been set during the repairs).

Yeah I clear the codes, turn car on and codes come right back on...would a faulty 02 sensor cause this? I was told it wouldn't or shouldn't stall car, is that correct?

the p0058 could be caused by a faulty O2 sensor or a bad connection at the O2 sensor, corroded/dirty terminals or a short (to power) 12v feed wire on the O2. check power at the O2 sensor using a DVOM, compare it to specs.

check the intake air temperature sensor for a bad connection, corroded/dirty terminals or a short (to power) 12v feed wire. check power at the sensor using a DVOM, compare it to specs.