Question about 2001 Pontiac Grand Am SE

1 Answer

No injector pulse

The car has 130k on a 2.4l. Tps volt range .544v closed 4.6v ft.

Posted by on

Ad

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Prodigy:

    An expert who has answered 500 questions.

  • Expert
  • 611 Answers

Sounds like ur injectors r shortedout

Posted on Jun 16, 2008

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya Mechanic can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US.
click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

I have 1995 Chev S10 with a 2.2L. It stubles from stop bad. I have replaced fuel filters and tuned it up,no help.


Test the tps using procedure below.


Throttle Position Sensor (TPS)
The Throttle Position Sensor (TPS) is connected to the throttle shaft on the throttle body. It is a potentiometer with one end connected to 5 volts from the VCM and the other to ground. A third wire is connected to the VCM to measure the voltage from the TPS. As the throttle valve angle is changed (accelerator pedal moved), the output of the TPS also changes. At a closed throttle position, the output of the TPS is low (approximately 0.5 volts). As the throttle valve opens, the output increases so that, at wide-open throttle, the output voltage should be approximately 4.5 volts. By monitoring the output voltage from the TPS, the VCM can determine fuel delivery based on throttle valve angle (driver demand).

TESTING


See Figures 1, 2 and 3

Backprobe with a high impedance voltmeter at TPS ground terminal and 5 volt reference signal terminal.
With the key ON and engine off, the voltmeter reading should be approximately 5.0 volts.
If the voltage is not as specified, either the wiring to the TPS or the VCM may be faulty. Correct any wiring or VCM faults before continuing test.
Backprobe with a high impedance voltmeter at the TP signal terminal and the sensor ground terminal.
With the key ON and engine off and the throttle closed, the TPS voltage should be approximately 0.5-1.2 volts.
Verify that the TPS voltage increases or decreases smoothly as the throttle is opened or closed. Make sure to open and close the throttle very slowly in order to detect any abnormalities in the TPS voltage reading.
If the sensor voltage is not as specified, replace the sensor.


0996b43f8021e0ea-j1axptdruxmkgupulmd503d3-5-0.gif

Fig. Fig. 1: Common Throttle Position Sensor (TPS) wiring diagram (wire color, terminal identification/location may vary on certain models)



0996b43f80232a38-j1axptdruxmkgupulmd503d3-5-2.gif

Fig. Fig. 2: Using jumper wires and high impedance voltmeter, test between the sensor ground and reference terminals, the voltage should be approximately 5 volts




0996b43f80232a38-j1axptdruxmkgupulmd503d3-5-5.jpg

Fig. Fig. 3: Next test between the sensor signal and ground terminals, verify that the TPS voltage increases or decreases smoothly as the throttle is opened or closed.


REMOVAL & INSTALLATION

Except 1998-99 2.2L Engines
See Figure 4



0996b43f8021e0e9-j1axptdruxmkgupulmd503d3-5-9.gif


Fig. Fig. 4: Common Throttle Position Sensor (TPS)
Disconnect the negative battery cable and remove the air cleaner and if equipped, the gasket and bracket.
Disengage the electrical connector.
Unfasten the two TPS attaching screw assemblies.
Remove the TPS from the throttle body assembly.
Remove the TPS seal.

To install:
Install the TPS seal over the throttle shaft.
With the throttle valve closed, install the TPS on the throttle shaft.
Rotate it counterclockwise, to align the mounting holes.
Install the two TPS attaching screws.
Tighten the screws to 18 inch lbs. (2 Nm).
Engage the electrical connector.
If equipped, install the bracket and gasket air cleaner and gasket.Connect the negative battery cable.

1998-99 2.2L Engines
Disconnect the negative battery cable and remove the air cleaner outlet resonator.Remove the throttle body assembly.Unfasten the two TPS attaching screw assemblies.Remove the TPS from the throttle body assembly. To install:
With the throttle valve closed, install the TPS on the throttle body.Install the two TPS attaching screws. Tighten the screws to 27 inch lbs. (3 Nm).Install the throttle body.Install the air cleaner outlet resonator.Connect the negative battery cable.

Aug 20, 2017 | Cars & Trucks

Tip

Throttle Position Sensors on engines


1.3) TPS - Throttle Position Sensor

What is it? This is an electrical device that detects the position of the throttle plate.

Where is it located? The TPS is found on the exterior of the throttle body on the opposite end of the throttle shaft to the accelerator linkage arm. It usually consists of a small black plastic unit with an electrical connector attached to it.

How does it work? The TPS is a variable resistor madeup of an arc shaped carbon track with an applied voltage of 0 to 5 volts along its length and a sliding contact that picks up the voltage at any point along it. The device has three electrical connections, two provide the voltage range along the carbon track and the third (most often the middle connection) sends a voltage to the ECU in accord with the position of the sliding contact point on the arc. This siding contact arm is attached to the end of the throttle shaft. As the throttleshaft rotates, opening and closing the throttle plate, the sliding contact sweeps up and down the carbon track providing voltage readings to the ECU; 0 volts for closed to 5 volts for fully open.
When the engine is at idle the TPS output should signal the ECU that the throttle is closed (low volts) and therefore the ECU should either open the Idle Air Control (IAC) valve or (on some engines) engage the idle speed control motor to maintain the engine idle speed. Sometimes a micro contact switch on the throttle body exterior associated with the throttle shaft is used to detect and confirm when the throttle plate is fully closed.


NEXT 1.3b) TPS faults and how to fix

on Jul 15, 2011 | Mercedes-Benz E-Class Cars & Trucks

1 Answer

I need to know the code po120


Throttle Position Sensor/Switch (TPS) A Circuit Malfunction
The TPS (Throttle Position Sensor) is a potentiometer that is mounted to the throttle body. It detects the throttle blade angle. As the throttle blade moves, the TPS sends a signal to the PCM (Powertrain Control Module). Usually a three wire sensor: A 5 volt reference from the PCM to the TPS, a ground from the PCM to the TPS, and a signal return from the TPS to the PCM. The TPS sends the throttle position information back to the PCM on this signal wire. When the throttle is closed the signal is near .45 volts. At WOT (Wide Open Throttle) the TPS signal voltage will approach a full 5 volts. When the PCM sees a voltage that is outside of normal operating range, P0120 will set. NOTE: The PCM knows that any large change in throttle position means a cooresponding change in manifold pressure (MAP). On some models the PCM will monitor MAP and TPS operation for comparison. Meaning that if the PCM sees a large percentage change in throttle position, it expects to see a cooresponding change in manifold pressure and vice versa. If it doesn't see this comparitive change, P0120 may set.

Dec 11, 2014 | 2001 Toyota Sienna

1 Answer

I replaced the tps on my 05 sonata 4 cyl. still get p0122 code HELP


HAVE VECHICLE HOOK TO CODE SCANNER WHILE OPERATING THE THROTTLE POSITION SENSOR.WITH CODE SCANNER HOOKED UP IN VECHICLE WHILE WATCHING TPS SENSOR VOLTAGE VARATION WITH TPS SENSOR CLOSED VOLTS ON SCANNER SHOULD BE 0.2 TO 0.8 VOLTS TPS SENSOR CLOSED AS YOU PRESS ACCELERATOR PEDAL TPS SENSOR VOLTS SHOULD INCREASE TO 4.3 - 4.8 VOLTS WIDE OPEN THROTTLE IF VOLTS DONT CHANGE WHILE PRESSING ACCELERATOR PEDAL EITHER TPS SENSOR WIRING IS OPEN OR SHORTED TO GROUND OR THE ECM FAILED.

Oct 01, 2011 | 2005 Hyundai Sonata

1 Answer

TPS Problem dodge 2.7 DOHC concorde 2001


Where is it located? The TPS is found on the exterior of the throttle body on the opposite end of the throttle shaft to the accelerator linkage arm. It usually consists of a small black plastic unit with an electrical connector attached to it.


How does it work? The TPS is a variable resistor made up of an arc shaped carbon track with an applied voltage of 0 to 5 volts along its length and a sliding contact that picks up the voltage at any point along it. The device has three electrical connections, two provide the voltage range along the carbon track and the third (most often the middle connection) sends a voltage to the ECU in accord with the position of the sliding contact point on the arc. This siding contact arm is attached to the end of the throttle shaft. As the throttle shaft rotates, opening and closing the throttle plate, the sliding contact sweeps up and down the arced carbon track providing voltage readings to the ECU; 0 volts for closed to 5 volts for fully open.

When the engine is at idle the TPS output should signal the ECU that the throttle is closed (low volts) and therefore the ECU should either open the Idle Air Control (IAC) valve or (on some engines) engage the idle speed control motor to maintain the engine idle speed. Sometimes a micro contact switch on the throttle body exterior associated with the throttle shaft is used to detect and confirm when the throttle plate is fully closed.



How to check? The socket for electrical connection with the TPS has 3 pins, one for 'ground', one for 5 volts 'reference' and a third (generally the middle one) for 'signal' output. Back probe the signal pin in the connector to the TPS. Attach the positive lead of a voltmeter to the probe and measure the voltage output as the throttle plate is rotated. If working correctly the meter should show a voltage consistent with the throttle position from approximately 1 volt when closed and 5 volts when fully open. What is looked for is smooth voltage increase with throttle change. If there are drop outs in the throttle transition voltage signal or if there is no transition then the TPS is faulty.


How to fix? If the track is dirty causing drop outs, try cleaning it with residue-free electrical cleaning spray. If the track is worn it is perhaps easiest to replace the complete device. In some instances it may be possible to adjust the location of the central mount of the TPS contact arm along the throttle shaft by a few millimeters and in the process cause a fresh concentric region of track to be used.

Jul 20, 2011 | 2001 Chrysler Concorde

1 Answer

96 nissan quest code p0120 p1705 the O/D flushes after startup. TPS was replaced but code still exists. Rough idle, loss of power and fuel economy.


this is an obd2 trouble code table, it can help you understand the meaning of code.
and for p0120
the Causes:
Sticking throttle return spring
MAP or TPS connector corrosion
Misrouted harness causing chafing
Bad TPS
Bad PCM
Possible Solutions:
If you have access to a scan tool, with KOEO (Key on engine off) observe the TPS voltage. With throttle closed, voltage should be about .45 volts. It should gradually sweep upwards to approximately 4.5 to 5 volts as you depress the throttle. Sometimes only a scope can capture an intermittent glitch in the TPS signal voltage. If you notice a glitch in the TPS sweep voltage, replace the TPS.
NOTE: Some TPS sensors require fine adjustment. If you aren't comfortable with using a DVOM (Digital Volt Ohm meter) to adjust the new TPS, then it's best to take the vehicle to a shop. If the voltage is not .45 volts (+or- .3 volts or so) with the throttle closed or if the reading is "stuck" then unplug the TPS connector. With KOEO check for 5 volts reference voltage present at the connector and a good ground. You can check the signal circuit for continuity by jumping a fused wire between the ground circuit of the TPS connector and the signal circuit. If the TPS reading on the scan tool now reads zero, then replace the TPS. However if that doesn't change the reading to zero, then check for an open or a short on the signal wire and if none is found, suspect a bad PCM. If manipulating the TPS wiring harness causes any change in idle, then suspect bad TPS.

Jul 11, 2011 | Nissan Quest Cars & Trucks

1 Answer

Code 22 on 95 gmc sierra what does that mean also t will start up but wants to die we replaced idle air control valve and also the throttle position sensor did not fix it i check vaccum lines all good it...


Trouble Code 22 indicates that the Throttle Position Sensor (TPS) is reading abnormally low. TPS volts should be close to 0.42 V at closed throttle and rise smoothly in about 0.02 volt increments to a maximum reading of about 4.85 volts at WOT.
Typical causes for this code include:

1) Maladjusted TPS
2) Defective TPS
3) No +5 volt reference to TPS
4) TPS-return to ECM is shorted to ground or to sensor ground
5) Defective ECM

Good luck, i hope this helps.

Jul 01, 2011 | 1995 GMC Sierra C1500

1 Answer

I have a 1997 Lincoln Continental ocassionally after driving and turning the car off it take two or three times to crank back up. when it does crank it idles kind of rough till you gun the acceleraror a...


Could be a sticky throttle position sensor TPS. If the TPS is not sending the right signal or the signal is not getting through then the ECU is unable to set the idle air control mechanism accurately. Clean the throttle interior, spray plenty of WD40 since it helps in the cleaning process as well as lubricates. I find using a clean paint brush is an excellent tool for cleaning awkward places Wipe down thoroughly when like new. The TPS is located on the throttle body at the end of the throttle plate shaft. It has three wires connected to it. The outer pins supply a voltage reference range of 0 volts and 5 volts. The middle pin should read near zero volts when the throttle is closed at idle. As you rotate the throttle plate the voltage reading should climb smoothly. If the clean up fails to help have a long look at the TPS.

Oct 17, 2010 | 1997 Lincoln Town Car

1 Answer

Where is the tps throttle postion sensor on a 2001 safari van?


TPS is on the end of the throttle plate shaft on the exterior of the throttle body. The role of the TPS is to measure the actual degree of rotation of the throttle plate shaft. An electrical contact arm attached to the throttle shaft sweeps up and down aa carbon track which has applied to it 0volts at one end and 5 volts at the other. The contact of the throttle reads the voltages across this range. When 'closed; the voltage should be close to zero volts

Sep 11, 2010 | 2001 GMC Safari

1 Answer

Car starts has no power until the gas pedal is almost to the floor. In 2nd the tach is at 3500 rpm and won't shift until i let up on the gas. It also hesitates and is using more gas than usuall.


Check the TPS (Throttle position sensor) wire lead and replace the TPS if any signs of damage or failure.

The Throttle Position Sensor (TPS) is used to send input signals to the Powertrain Control Module (PCM) to indicate the current angle of the throttle blade.

Theory/Operation:
This sensor is a variable resistor that has a 5 volt reference signal applied to it by the PCM. The TPS sends signals back to the PCM in the range of approximately 1 to 4 volts, depending upon the throttle shaft angle. The PCM uses these input voltages to determine the current position of the throttle.
The PCM uses the voltage signals from the TPS and other input sensors to determine the proper air/fuel mixture and ignition timing for certain operating conditions. Some of these operating conditions are: acceleration, deceleration, idle, and wide open throttle.


Typical Readings:
An input voltage of approximately 1 volt indicates a minimum throttle opening, idle, or deceleration condition. An input voltage of approximately 2 volts indicates a cruise or light acceleration condition. An input voltage of approximately 4 volts would indicate a maximum throttle opening or wide open throttle condition.
NOTE: The following procedure tests the TPS only.
  1. The TPS can be tested with an analog voltmeter. The center terminal of the TPS is the output terminal.
  2. With the ignition key in the ON position, check the TPS output voltage at the center terminal wire of the connector. Check this at idle (throttle plate closed), and at wide open throttle (WOT).
    • At idle, TPS output voltage should be approximately one volt. The output voltage should increase gradually as the throttle plate is slowly opened from idle to WOT.
    • At wide open throttle, TPS output should be approximately 4.5 volts.
As always, check the service manual for the proper procedures and specifications for your particular vehicle.

Thank you using Fixya and good luck.

Mar 08, 2010 | 2002 Oldsmobile Alero

Not finding what you are looking for?
2001 Pontiac Grand Am SE Logo

Related Topics:

173 people viewed this question

Ask a Question

Usually answered in minutes!

Top Pontiac Experts

yadayada
yadayada

Level 3 Expert

77499 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22306 Answers

Jeffrey Turcotte
Jeffrey Turcotte

Level 3 Expert

8826 Answers

Are you a Pontiac Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...