Question about 2005 Nissan Sentra

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Throttle position sensor

When I install the TPS the car work fine but in low the car star to go up in RPM and down, like from 1000 to 2500 constant. the part distributor told me that have to be calibrated. how, can you help

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Did you buy a universal TPS? The one that you removed should have had to round screw holes. Did the new replacement have two round holes as well? If the two screw holes are slotted then you will need to adjust it. Without a scan-tool (to look at like data) it will take longer to adjust. Slide the TPS sensor into place and turn it until the spring and cam wheel starts to move. At this point STOP and tighten the screws. Start the car and test the operation of the sensor. You may need to fine tune the adjustment, be patient. Comparing the performance of the old sensor, to the new one. Is it better or worse then it was. Please write back with any new information or questions, good luck.

Posted on Mar 22, 2014

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Posted on Jan 02, 2017

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SOURCE: throttle position sensor

HI
did your car have (ETS) electronic throttle control system
the TPSis a part of this system
but you can test it by using diagnoses scan tool to check the TPS value when press or depress the accelerator pad.
so you can tell us the NO. of DTC for example(P0122)
ASK FOR MORE INFORMATION

Posted on Jul 14, 2008

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SOURCE: 93 Nissan Altima idles rough and has no power.

check exhaust back pressure . can have no more than 2 to3 inch pounds off pressure. may also want to check timing marks.

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change oil and filter put a emission cleaner in fuel

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SOURCE: High idle speed- Nissan N16 Pulsar/ Almera

Battery not charging well when airconditioner on ( also engine speed not increase when air conditioner on )

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SOURCE: rpm going up and down

coolant temp switch can cause this. but add a can of SEAFOAM to fuel and change out the f filter again. the ETHANOL is causing unusual problems with these.

Posted on Aug 30, 2009

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RPM's rev high and low


"Could this be a throttle positioning sensor problem?" - probably not. The Throttle Position Sensor (TPS) tells the computer how hard you are stepping on the gas. It does not really control idle speed.

Your problem is more likely the Idle Air Control (IAC) valve. This is a small electric valve that the computer can open and close in small steps to set the idle RPM at the desired point (a little higher when cold, then down to normal speed when warm). The IAC valve is notorious for getting all crudded up inside. Then it sticks open too much (really fast idle speed) or sticks shut (really low speed).

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My jimmy idles up and down every 5-10 seconds from bout 900-1000 rpm only when the heater is running otherwise idles fine


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Where is the thorttleposition sensor on 2001jeep cherokee


The 3 wire Throttle Position Sensor (TPS) is mounted on the throttle body and is connected to the throttle blade.
The TPS is a 3wire variable resistor that provides the Powertrain Control Module (PCM) with an input signal (voltage) that represents the throttle blade position of the throttle body. The sensor is connected to the throttle blade shaft. As the position of the throttle blade changes, the resistance (output voltage) of the TPS changes.
The PCM supplies approximately 5 volts to the TPS. The TPS output voltage (input signal to the PCM) represents the throttle blade position. The PCM receives an input signal voltage from the TPS. This will vary in an approximate range of from .26 volts at minimum throttle opening (idle), to 4.49 volts at wide-open throttle. Along with inputs from other sensors, the PCM uses the TPS input to determine current engine operating conditions. In response to engine operating conditions, the PCM will adjust fuel injector pulse width and ignition timing.
The PCM needs to identify the actions and position of the throttle blade at all times. This information is needed to assist in performing the following calculations:

selectachapter.gif

Cherokee, Grand Cherokee, 1999-2005
Throttle Position Sensor

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Operation

The 3 wire Throttle Position Sensor (TPS) is mounted on the throttle body and is connected to the throttle blade.
The TPS is a 3wire variable resistor that provides the Powertrain Control Module (PCM) with an input signal (voltage) that represents the throttle blade position of the throttle body. The sensor is connected to the throttle blade shaft. As the position of the throttle blade changes, the resistance (output voltage) of the TPS changes.
The PCM supplies approximately 5 volts to the TPS. The TPS output voltage (input signal to the PCM) represents the throttle blade position. The PCM receives an input signal voltage from the TPS. This will vary in an approximate range of from .26 volts at minimum throttle opening (idle), to 4.49 volts at wide-open throttle. Along with inputs from other sensors, the PCM uses the TPS input to determine current engine operating conditions. In response to engine operating conditions, the PCM will adjust fuel injector pulse width and ignition timing.
The PCM needs to identify the actions and position of the throttle blade at all times. This information is needed to assist in performing the following calculations:


Ignition timing advance Fuel injection pulse-width Idle (learned value or minimum TPS) Off-idle (0.06 volt) Wide Open Throttle (WOT) open loop (2.608 volts above learned idle voltage) Deceleration fuel lean out Fuel cutoff during cranking at WOT (2.608 volts above learned idle voltage) A/C WOT cutoff (certain automatic transmissions only)


Removal & Installation

3.7L & 4.0L

  1. Disconnect TPS electrical connector.
  2. Remove TPS mounting screws.
  3. Remove TPS.

To Install:
The TPS is mounted to the throttle body. The throttle shaft end of throttle body slides into a socket in the TPS. The TPS must be installed so that it can be rotated a few degrees. (If sensor will not rotate, install sensor with throttle shaft on other side of socket tangs). The TPS will be under slight tension when rotated.
  1. Install TPS and retaining screws.
  2. Tighten screws to 7 Nm (60 inch lbs.) torque.
  3. Connect TPS electrical connector to TPS.
  4. Manually operate throttle (by hand) to check for any TPS binding before starting engine.

4.7L
  1. Remove air duct and air resonator box at throttle body.
  2. Disconnect TPS electrical connector.
  3. Remove two TPS mounting bolts (screws).
  4. Remove TPS from throttle body.

To Install:
The throttle shaft end of throttle body slides into a socket in TPS. The TPS must be installed so that it can be rotated a few degrees. If sensor will not rotate, install sensor with throttle shaft on other side of socket tangs. The TPS will be under slight tension when rotated.
  1. Install TPS and two retaining bolts.
  2. Tighten bolts to 7 Nm (60 inch lbs.) torque.
  3. Manually operate throttle control lever by hand to check for any binding of TPS.
  4. Connect TPS electrical connector to TPS.
  5. Install air duct/air box to throttle body.

Hope this helps

Dec 31, 2011 | 2001 Jeep Grand Cherokee

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2001 nissan maxima gle it bogs down when i press on the gas,idles low at .5 rpm,dies when i start it i have to keep my foot on the gas,lights run dim when i come to a full stop it has 155,000 miles


Hi and welcome to FixYa!

As a first course of action, I strongly suggest that you replace the MAF (mass air flow) sensor and the TPS (throttle position sensor). If the MAF and TPS is faulty the RPM tends to go down or goes erratic. The MAF and TPS is located at the throttle body which is secured by small screws or bolts. It is visible which can easily be seen.

Once replaced you'll be good. Hope this helps and thank you for using FixYa! Have a good one!

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