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Adjust throttle sensor

Has now power when i take off

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1999 Chevy Metro LSI Loss of acceleration power, on take off only. I have no acceleration power up to the speed of 10 - 15 MPH, after that the car runs fine.


Could be a dead spot in the tps or maybe it needs adjusting.
here is a procedure to adjust:

0900c152800488e3-j1axptdruxmkgupulmd503d3-4-0.gif . Fig. 1: Throttle position sensor testing
  1. Connect a digital multimeter to the throttle position sensor terminals 1 and 2. Measure resistance.
  2. Insert a 0.012 in. (0.3mm) feeler gauge between throttle stop screw and throttle lever.
  3. With retaining screws loosely installed, turn throttle position sensor fully clockwise, then slowly counterclockwise until digital multimeter indicates 0 ohms (continuity).
  4. Tighten screws to 18 inch lbs. (2 Nm).
  5. Insert a 0.035 in. (0.9mm) feeler gauge between throttle stop screw and throttle lever. Digital multimeter should now indicate an open circuit (no continuity).

Aug 20, 2017 | Cars & Trucks

1 Answer

How do I adjust the throttle position sensor on my 93 cadillac seville sls 4.9l engine?


4.5 And 4.9L Engines
  1. Remove the air cleaner.
  2. Remove the TP sensor connector.
  3. Unscrew the 2 TP sensor attaching screws and retainers, and remove the TP sensor.

To install:
  1. With the throttle valve in the normal closed idle position, install the TP sensor on the throttle body assembly.
  2. Install 2 TP sensor attaching screws with retainers. Do not tighten the screw until the TP sensor is adjusted.
  3. Install the TP Sensor connector. Adjust the TP Sensor and perform the idle learn procedure.
  4. To Perform the TP sensor adjustment.
    1. Disable the generator by grounding the green harness connector plug adjacent to the generator.
    2. Start the engine, enter diagnostics, and select PCM override PS103 'ISC Actuator'
    3. Press the 'COOLER' button on the CCP to retract the ISC Actuator. This action will disengage the A/C compressor and command the EGR 'OFF'. The Climate control center display will change from '50 to 00'. The ISC Actuator will slowly retract (about 20 seconds) to a fully retracted position. Verify that the throttle lever is resting on the minimum idle speed screw. With the ISC Actuator plunger fully retracted, disconnect the ISC harness.
    4. Select the PCM data PD01, 'TP Sensor', while still in PCM override PS03. Note the throttle position (in degrees) displayed on PCM parameter PD01.
    5. (-0.5° TO + 0.5°)

      No TP sensor adjustment required. Reattach the ISC Actuator harness and disconnect the grounding wire at the generator.
    6. TP Sensor (-10.0° TO -0.6°) or TP Sensor (+ 0.6° TO + 90.0°) TP Sensor adjustment required.

  5. With the engine 'OFF' and the ignition 'ON', reenter diagnostics and select PCM override PS03 'ISC Actuator'. Press the 'COOLER' button to retract the ISC Actuator the minimum air setting.
    1. Loosen the TP sensor screws just enough to permit the sensor to be rotated. Open the throttle slightly and allow the throttle lever to snap shut against the minimum air screw. Adjust the TP sensor so the parameter display is 0°. Tighten the TP sensor mounting screws with the sensor in the adjusted position. Recheck the parameter to be sure the TP sensor parameter is (-0.5° to + 0.5).
    2. Install the air cleaner.

Dec 25, 2015 | Cadillac Cars & Trucks

1 Answer

Adjust throttle sensor


not adjustable new sensor required

Mar 30, 2014 | 1998 Audi A4

1 Answer

I have Civic 2001 with 160,000 miles on it. i have problem when i am driving on high way on 80/mph rpm stay on 2800 and after 5 minuts rpm goes to 3500 and i feel loud noise like engine is taking more...


If the car type is manual transmission:
- Perform the clutch and pressure plate test.
PROCEDURE:
- Pull up the hand brake, shift the lever to 1st gear, rev up to 2000 rpm, release the clutch pedal at once.
- If the engine does not stall, replace the clutch, pressure plate, clutch bearing, regrind the fly wheel and pressure plate precisely.
- If the engine stalls, the clutch system is OK and do not need any clutch system repairing.
- If the clutch system is OK, check vacuum leaks through intake manifold, vacuum hoses, PCV valve and throttle control cable adjustment, MAP sensor and Throttle Plate Position sensor adjustment (9.8 percent or 0 degrees at TP sensor fully closed position).

If the car type is automatic transmission:
- Check the transmission control cable adjustment.
- Check vacuum leaks through intake manifold, vacuum hoses, PCV valve and throttle control cable adjustment, MAP sensor and Throttle Plate Position sensor adjustment (9.8 percent or 0 degrees at TP sensor fully closed position).
- Check the Automatic Transmission Fluid level in the transmission with the car on level floor, engine start, gear lever in P.
If the problem persists, contact a competent technician or service personnel.

Jan 19, 2014 | 2001 Honda Civic

1 Answer

Power steering preo sensor circuit range/performance FOR A 2000 neon


Here is the description for the code. You need to check the sensor and the wiring back to the computer.

P0551 DODGE Description Power steering pressure (PSP) sensor is installed to the power steering high-pressure tube and detects a power steering load. This sensor is a potentiometer which transforms the power steering load into output voltage, and emits the voltage signal to the Powertrain Control Module (PCM). The PCM controls the electric throttle control actuator and adjusts the throttle valve opening angle to increase the engine speed and adjusts the idle speed for the increased load.
Read more: http://engine-codes.com/p0551_dodge.html#ixzz21xtT1DTz

Jul 28, 2012 | 2000 Dodge Neon

1 Answer

How do I change the Throttle Position Sensor


Some throttle position sensors are adjustable. Follow manufacturer's instructions.
  • On older engines, correct adjustment is crucial to proper system operation.
  • On newer engines, this is not as important because the computer uses whatever reading it takes at idle as base voltage (adaptive learn strategy).
Incorrect TP sensor adjustment may cause:
  • Inaccurate idle speed,
  • Engine stalling, and
  • Acceleration stumbles.
Follow these steps to adjust a typical TP sensor:
  • Backprobe the TP sensor signal wire and connect a voltmeter from this wire to ground.
  • Turn on the ignition switch and observe the voltmeter reading with the throttle in the idle position.
  • If the TP sensor does not provide the specified voltage, loosen the TP sensor mounting bolts and rotate the sensor housing until the specified voltage is indicated on the voltmeter.
f32-29.gif A TP Sensor with elongated slots for sensor adjustments. Courtesy of General Motors Corporation - Chevrolet Motor Division.
  • Hold the sensor in this position and tighten the mounting bolts to the specified torque.
Most throttle position sensors are made so that their adjustments are tamperproof. They have screws that are either soldered or staked.
To remove the switch, these might need to be drilled or filed off. After the new switch is installed and adjusted, the new mounting screws are restaked.

May 24, 2012 | 1991 Buick Regal

1 Answer

Looking to find the correct specs to adjust a TPS for a 1994 Mazda 929. Using a multi-purpose voltmeter.


YOU NEED 2 VOLT METERS.FIRST OF ALL START ENGINE.LET IT GET OPERATING TEMPERATURE THEN TURN OFF ENGINE.THEN YOU CONNECT TWO VOLT METERS TO THE TEST CONNECTOR.TURN IGNITION ON AND CHECK THAT CURRENT FLOWS TO ONLY ONE VOLT METER.IF BOTH VOLT METERS SHOW CURRENT FLOW REMOVE THE CAP AND TURN THE ADJUSTING SCREW COUNTERCLOCKWISE UNTIL ONE VOLT METER SHOWS CURRENT.IF NO CURRENT IS REGISTERED BY EITHER VOLTMETER TURN THE ADJUSTING SCREW CLOCK WISE UNTIL ONLY ONE VOLT METER SHOWS CURRENT.INSTALL THE CAP ON THE ADJUSTING SCREW AND DISCONNECT THE THROTTLE SENSOR CONNECTOR.CONNECT AN OHM METER TO THE THROTTLE SENSOR TERMINALS.OPEN THE THROTTLE VALVE AND CHECK THE RESISTANCE READING FROM THE THROTTLE SENSOR.AT IDLE THE THROTTLE SENSOR SHOULD SHOW ABOUT ONE KILO OHM RESISTANCE.AT WIDE OPEN THROTTLE THE SENSOR SHOULD SHOW ABOUT 5 KILO OHMS RESISTANCE.ANY RESULTS OTHER THAN THESE.REPLACE THE THROTTLE SENSOR AND RETEST.

Aug 26, 2009 | 1994 Mazda 929

1 Answer

Throttle problem


sounds like your MAF sensor needs servicing

Jun 19, 2009 | 1986 BMW 3 Series

2 Answers

Engine power loss


Inspect Wireset Damaged, worn, or deteriorating spark plug or coil wire(s). in this list u will find a answer to ur problem Shaun 2 Inspect Spark Plug Fouled, damaged or broken spark plug(s). 3 Inspect Fuel Filter Clogged or dirty fuel filter 4 Inspect Distributor Worn, loose or incorrectly adjusted distributor. 5 Inspect Distributor Cap Loose or cracked distributor cap 6 Inspect Distributor Cap And Rotor Kit Loose, cracked, or worn distributor cap and ignition rotor. grey_line.gif 7 Inspect PCV Valve Plugged or damaged pcv valve. grey_line.gif 8 Inspect Air Filter Restricted or clogged air filter. grey_line.gif 9 Inspect Catalytic Converter Clogged, damaged, defective or faulty catalytic converter. grey_line.gif 10 Inspect Automatic Transmission Improperly adjusted kickdown cable adjustment or internal transmission problems. grey_line.gif 11 Inspect Fuel Pump Improperly functioning fuel pump or circuits. grey_line.gif 12 Inspect MAP Sensor Improperly connected or faulty m.a.p. sensor. grey_line.gif 13 Inspect Mass Air Flow Sensor Improperly connected or faulty mass air flow sensor. grey_line.gif 14 Inspect Throttle Position Sensor Faulty throttle position sensor or throttle position sensor circuit. grey_line.gif 15 Inspect Timing Specification Incorrectly adjusted engine timing. grey_line.gif 16 Inspect Fuel System Pressure Incorrect fuel pressure being delivered to carburetor or fuel injection system. grey_line.gif

Nov 13, 2008 | 2002 Chevrolet S-10

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