Question about 2002 Daewoo Leganza

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Tps voltage low?..check engine lamb is on and off when slow down or stops

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Hi:
If someone has checked your check engine light code for you and told you that the cause was TPS voltage low, that is most likely telling you that your TPS, or throttle position sensor has a bad output.
Depending on the exact model of your car, you can purchase and replace just the TPS, and it should take care of your problem

Posted on Feb 04, 2010

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Codes are reading low tps voltage, mapps high voltage ignition on low voltage at idle. Idle surges sputers and stalls when driving. Replaceed mapp and tps with no improvment?


Have you consider to check the battery power. I believe the main problem you have is either the battery or the alternator. Due to these two things with low voltage the brain ( ECU ) does not have the enough power to work. Good Luck.

Aug 15, 2012 | 1992 Chevrolet S-10 Blazer

1 Answer

2004 chrysler sebring 3.0 stalls and will not idle. Engine lite came on and scanner said TPS low voltage on one side. I replaced TPS and it temporarily idled ok. Engine light is now off. Runs fine except...


This is where proper diagnosis comes in...as the TPS sensor voltage low because of a failed TPS sensor? Or was the TPS voltage low due to low battery voltage at the control module? Did you bother to check for the proper voltage at the TPS sensor connector before throwing parts at the problem? If the battery voltage goes low, it is NORMAL for the engine to not idle correctly. Low voltage at the control module can cause the computer to lose all of its "learned" data. It will have to "re-learn" how to idle the engine. This can sometimes take a few days. This is exactly WHY I keep telling people to not be disconnecting batteries in an attempt to "clear" computer fault codes.
If your battery has been going dead, you need to properly test and diagnose your battery and charging system. If this system is not working correctly, there is NO WAY your computer network can function correctly. - this MUST be diagnosed and repaired FIRST!

May 18, 2012 | 2004 Chrysler Sebring

1 Answer

I have a 2003 Jeep Liberty. My check engine light comes on frequently. The diagnositc check always says its the "Pedal Alignment Sensor". What is pedal alignment and how do I have this checked and/or...


I'm assuming that you are talkin about P0122 Code - Throttle Position Sensor/Switch A Circuit Low Input

A P0122 code means that the the car's computer has detected that the TPS (throttle position sensor) is reporting too low a voltage. On some vehicles that lower limit is 0.17 - 0.20 volts (V).

Did you adjust it when you installed it? If the signal value is less than .17V then the PCM sets this code. Could be an open or a short to ground in the signal circuit. Or you may have lost the 5Volt reference voltage.

Symptoms may include:
* Rough or low idle
* Stalling
* Surging
* No/little acceleration
* other symptoms may also be present

Causes: A code P0122 may mean that one or more of the following has happened:
* TPS not mounted securely
* TPS circuit short to ground or another wire
* Faulty TPS
* Damaged computer (PCM)

Possible Solutions: Some recommended troubleshooting and repair steps are:
* Carefully check the throttle position sensor (TPS), wiring connector, and wiring for breaks, etc. Repair or replace as necessary
* Check the voltage at the TPS (refer to a service manual for your vehicle for specific information). If the voltage is too low that is indicative of a problem. Replace if necessary.
* If recently replaced the TPS may need to be adjusted. On some vehicles the installation instructions call for the TPS to be properly aligned or adjusted, consult a repair manual for specifics.
* If there are no symptoms at all, the problem may be intermittent and clearing the code may resolve the issue temporarily. If this is the case then you should definitely check the wiring to be sure it's not rubbing on anything, grounding, etc. The code may come back.

Hope helps (remember comment and rate this).

Sep 22, 2010 | Jeep Liberty Cars & Trucks

1 Answer

96 chevy 3500 5.7 tps low voltage when cold trans slips and soft shift ecm problem?


If I understand you correctly, you got a code error on the TPS (Throttle position sensor) If you can get a scanner hooked up to it, and push the gas pedal down slowely and then let off slowely you can watch it on the scanner. This will tell you if the sensor is not smooth, or has dead spots. You might want to start with this.

Nov 07, 2009 | 1996 Chevrolet K1500

1 Answer

Low voltage tps senser.


Not likely getting a bad TPS.Your TPS runs off a 5volt reference wire.Using multimeter with key on engine off Check to make sure you have your 5volt reference check for any deformed terminals or broken wires inside insulation.

Aug 22, 2009 | 1994 Buick Regal Gran Sport

3 Answers

Hold light blinking, check engine light on, engine slows down


check tps sensor (throttle position sensor in backside of the throttle cable) and map sensor (manifold absolute pressure on front little 1 inch sensor with vacuum line) make sure there plugged in. the ecm (engine control module driver side inner fender) and tcm (transmission control module under dash) both need the data to know when to upshift and increase fuel/air. Otherwise the computer runs default values and guesses off of other sensors giving poor performance. also disconnect battery for 15 min. usually resets aveo service lights if you dont have a scanner.

Jul 13, 2009 | 2004 Chevrolet Aveo

1 Answer

94 Lincoln TC engine stalls when slowing/stopping


Most common cause of stalling for Lincolns in that era is the TPS (Throttle Position Sensor). It regulates fuel mixture, idle speed etc. A bad TPS will usually act up in one of two ways:
  1. When cold, car continually stalls
  2. When warm, car stalls when slowing down (especially if AC is on)
As far as valve cover oil leak, it's a problem that should be addressed to keep oil from fouling your spark plugs but highly unlikely to be the cause of your stalling problem. Hope this answers your question. All the best.
Greg

Jun 16, 2009 | 1994 Lincoln Town Car

1 Answer

1909 buick skylark tps low volts trouble code


replace ignition coil make sure by dealer the right mode is used when ordering if not ordered right you will get a difference in engine volts

Jun 07, 2008 | 1991 Isuzu Pickup

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