Question about 2001 Volkswagen Jetta TDI

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How to check for bad check engine light on volkswagon jetta

I been having problems with sensors and the check engine light never came on to warn me of these sensors

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The check engine light should come on along with the rest of the warning lights as a test when you turn the key switch on.
They should then go off once the engine starts.

Posted on Jan 17, 2013

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  • Expert
  • 103 Answers

Indicator may appear if there is a particular sensor fails.
Try resetting it using the following technique.
Sometimes the problem could be solved.
Advantage is you could use this technique in the future too.

If you can get an OBD 2 scanner off eBay (US$ 6), you could be able to communicate with your car ECU (Electronic Control Unit) using the smart-phone app.

So that, there is a chance to CLEAR all the error indications.

After that, still problem persists, it means the vehicle need full scan (you can't do this at home, probably seek a vehicle garage).

Clarification:
gnaveendra@gmail.com

Posted on Oct 22, 2015

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Posted on Jan 02, 2017

  • 883 Answers

SOURCE: check engine light

one possible cause: many cars use the engine coolant temperature sensor to control idle speed and to shut down a dangerously overheated engine. if this sensor is sending a false signal, the controller will not know that and it will continue to listen to it. your task is to try and see if this signal is true or false. do this by measuring (USING A HAND-HELD MULTIMETER SET TO LOW OHMS RESISTANCE TEST) the resistance change across this sensor identified by a blue/white or yellow/red wire at one connector and a brown/green wire at the other connector. the sensor is located near the thermostat on the hot side of the coolant outlet from engine. if you find no change in ohms or find infinity ohms or always zero ohms, change the sensor and the light may fix itslef over time.

Posted on May 15, 2008

  • 59 Answers

SOURCE: Check Engine Light on

Most likely Mass Air Flow Sensor. Could be oxygen sensors also but the mass air flow is more common

Posted on Jan 07, 2009

  • 102 Answers

SOURCE: Engine light on 2002 VW Jetta

sorry , but no good news, if you are using a fair amount of oil it has most likely reclogged the converter. unbolt the pipe just before converter and run car, if it seems to run better then it is time for a set of rings and another new converter

Posted on Mar 23, 2009

mcgyver468
  • 710 Answers

SOURCE: 2006 volkswagon jetta brake problem

A SIX INCH C-CLAMP, PURCHASED AT THE AUTO PARTS STORE, IS NEEDED TO PUSH THE PISTON INTO THE CALIPER AS LONG AS IT IS THE FRONT BRAKES THAT YOU ARE WORKING ON. IF YOU ARE REFERRING TO THE REAR BRAKES, THEN THE PISTON MUST BE TURNED COUNTERCLOCKWISE(TO THE LEFT). HOPE THIS HELPS. PLEASE KEEP ME POSTED. THANKS FOR USING FIX-YA. GOOD LUCK

Posted on May 29, 2009

bschilz
  • 2049 Answers

SOURCE: location of crank sensor 1998 jetta 2.0

It's located near the cam gear on the front of the engine however, the crank sensor, to the right of the oil filter near the bell housing is the part notorious for going out on these cars, and causing a p0322 and/or p0341 code, and sometimes others as well To replace the crank sensor you have to: Support the motor with a floor jack. Remove the starter, 2 of the starter bolts connect to the motor mount. Remove the motor mount from the frame, very easy. Remove the oil filter. That will give you just enough room to get an allen wrench in to remove the bolt holding the sensor in.

Posted on Oct 25, 2009

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1 Answer

Jetta Warning Light


It says that your vehicle is low on coolant.Get the coolant level checked.If low has to be changed.

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Oct 09, 2012 | 1995 Volkswagen Jetta

1 Answer

Emissions control light flashing volkswagon jetta why


Hi there, The emission control light can come on for many reasons There are many sensors which
the ECU ( the cars computer ) gets its imformation from to control the engine and therefore the
emissions eg. Oxygen sensor, airflow meter,inlet air temperature,water temperature etc.
The best way to find the fault is have a diagnostic check done ( code reader ) this will find the
problem and avoid guess work which will in the end save you money.
One of the common problems with VW is the spark plug coils, but to play it safe and get it checked
I hope i have been of some help to you
John ( John South Wales UK )

Jun 28, 2011 | 2005 Volkswagen Jetta

2 Answers

My oil light is on and beeping like crazy on my 1997 volkswagon jetta and something in the motor keeps clicking on top of that i would like to know why?


Usually when the oil light comes on, its too late to save the engine if the sensor is working properly.

Check the oil in your engine under the hood. If it has the correct amount of oil, check the wire going to the oil pressure sensor located on the side of the engine. It may be loose or the sensor may have failed sending a false reading.

If you do not have oil in the engine " no oil pressure" you may have badly hurt the engine, and the noise you are hearing is the rocker arms begging for mercy.

Good luck! write back

Feb 09, 2011 | 1995 Volkswagen Jetta

1 Answer

Volkswagon Jetta, Brake warning light stays on.


Just for giggles... inspect the brake pads. The light is designed to come on when your brake pads are getting thin as well as low fluid level and emergency brake use.

May 24, 2017 | 2001 Volkswagen Jetta TDI

3 Answers

1998 volkswagon jetta manual transmission is hard to shift


Transmission problem...

I'd check the fluid levels... on most if not all 98's there is no tranny fluid stick so you have to either look for the plug on the transmission. Most cars have 2. One on the bottom and one half way up from the bottom of the transmission driver's side. Top it off until the tranny fluid runs out of the hole.

If this doesnt help... you need to get it checked.

Mar 03, 2009 | 1998 Volkswagen Jetta

2 Answers

2002 volkswagon jetta turbo diesel need to know what this trouble code means p3130


you have a bad mass air flow sensor. unplug the mass air flow sensor, the car will run normal if the sensor is bad

Jul 26, 2008 | 2002 Volkswagen Jetta TDI

1 Answer

Check engine light


one possible cause: many cars use the engine coolant temperature sensor to control idle speed and to shut down a dangerously overheated engine. if this sensor is sending a false signal, the controller will not know that and it will continue to listen to it. your task is to try and see if this signal is true or false. do this by measuring (USING A HAND-HELD MULTIMETER SET TO LOW OHMS RESISTANCE TEST) the resistance change across this sensor identified by a blue/white or yellow/red wire at one connector and a brown/green wire at the other connector. the sensor is located near the thermostat on the hot side of the coolant outlet from engine. if you find no change in ohms or find infinity ohms or always zero ohms, change the sensor and the light may fix itslef over time.

May 15, 2008 | 1998 Volkswagen Jetta

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