Question about 2004 Volkswagen Passat 1.8

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2004 volkswagon passat epc light on with engine stall

Engine stalls on idle

Posted by Anonymous on

5 Suggested Answers

6ya6ya
  • 2 Answers

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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

SOURCE: 99 volkswagen passat starts, then stalls, won't keep idle

Actually "9" was a typo, Meant to be "(it died and would not hold charge)" - didn't hold shift key down - sorry. Battery is holding charge - the old battery was a good 6 years old!. I believe that when the old battery drained it reset the computer code for base idle, I am going to get a scanner on it to see if clearing the code helps - if not possibly the iddle control valve is faulty? (don't know if this year has one, the part is only listed up to 98 model year)
Sorry again for the mix-up

David.

Posted on Oct 21, 2008

FixinFax
  • 3085 Answers

SOURCE: Shaking engine, weak power, blinking check engine light

You have a bad coil pack, they usually crack from age and heat. It's best to replace them all. Check for a VW recall on this item.

Posted on Dec 22, 2009

CaptainKeyz
  • 202 Answers

SOURCE: VW PASSAT 03 V6. EPC AND TRACTION LIGHT COME ON INTERMITTANTLY.

First, to read VW codes you will want to get yourself a $50 VAG tool. It will read all your systems, not just the ECU.
Electronic Power Control can go out for several reasons. Check your brake lights with the car running. Check you radiator fluid level. If the car is running bad, you could have bad spark plugs/ wires or ignition coil.
The traction control is tied into the ABS system and often causes problems here as well. Each wheel has a speed sensor and magnet wheel in the hub. You can check these for damage by removing the tires for access. The sensors come out by hand, and inside the hole they come out of is the place to check the magnets with a flash light. Apply a small amount of wheel bearing grease to the sensor.
The control unit goes out in these systems at an alarming rate. They can be easily removed, and repaired for under $200 at modulemaster.com
Since it is intermit, I suspect most likely a loose sensor, or electrical connector.
If your brakes feel squishy at all, bleed the brake lines of air and contaminants.
Good Luck!

Posted on Feb 23, 2010

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