Question about Volkswagen Passat

4 Answers

Car will not start, had been idle for some time as owner had removed battery and would not start once replaced. When ignition turned on fuel pumps would not run - have now over-riden the relay with a switch- however ir does seem NO power to activate the relay. Once pumps running still will not start, now no spark, wathing the spark plugs or coil output it will fire ONCE and then stop. Turn ignition off then on and will spark once and then nothing. Called in a mobile auot electrician - he basically could not find problem (his answer like numerous others - gasoline and matches)Did actually start while auto electrician was there - he had opened the air/fuel system and was wiggling something? somehow it must have been firing at that stage. Did find a vacuum leak or holes in air pipe and thought that was reason so have repaired it - will not start - very frustrating Auto electrician had also put some form of over-ride power on a terminal in the ECU to power fuel pumps - this may have allowed the ignition at the time also. I have a manual But Stumped. Think maybe is the airflow sensor? It is a 1990 Passat 1500cc Gt I think Thank you for your time, much appreciated

Posted by on

  • 1 more comment 
  • VW passat Jun 24, 2009

    previous answer gave another website link? and then asked for the results and then would help? samarins.com/diagnose? seems stupid to me as tried the website and could fined nothing of any significance other than more time.
    Have now started the vehicle, with the previous auto electrician and it was eventually as I suspected, the fuel pumps had to be powered or relay over-ridden, using the same wire he had previously used from the ECU as somhow this sent signal to igniter also(has ignitor/ignition together) Auto electrician and myself still unable to source 'actual' problem, only remedy or bypass the effect. Car started very roughly and idled too high, now it seems the idle controller- which manages some form of airflow pipe- is not opersating.
    It was the opinion of VW dealer that the ECU would be a last resort also the opinion of the Auto electrician that merely disconnecting battery removed or wiped any recorded 'fault' in the ECU.
    Would appear unless 'cause' is found and repaired the car will just be a constant problem if just continually attempting to overide the faults.
    Look forward to response from someone who may possible have VW experience(and managed to survive and stay sane)
    Thanks

  • VW passat Jun 24, 2009

    interesting response, considering the auto electrician is in a blxxdy garage, Darling

  • VW passat Jun 24, 2009

    i think checking ve and -ve? if not done by an auto electrician - is saying very little of his competence. Such was checked prior to calling in an auto electrician as was all the fuses checked.
    The engine is running and has considerable spark - if bypassed -

×

Ad

4 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    President:

    An expert whose answer got voted for 500 times.

  • Master
  • 2,187 Answers

When you read the issue at first I thought it is an anti-theft device in the car that would have stopped you from starting this vehicles as I have heard similar cases. But it would not hurt if you checked out the electrician may have missed it.
Check also the fuel pump relay under the dash near the steering column if it is working. Also an oil pressure switch which serves as back up to this relay is also associated. Check both if they are in good condition and their wirings. If you can get another ECU to test to your car you can eliminate the ECU as the source if you still see the symptoms.

Posted on Jun 24, 2009

Ad
  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 400 Answers

Plz check the + - terminal wire weather they are conducting current or not do also check the plug wires .. some time if the engine pistons get rough they leak the oil which get on to plug and make it difficult for current to follow on. there could also be the fuse problem which not been mentioned by you .. check the fues and better if replace all of them with new set of fueses... there could also be the problem with you selfcoil get it check to some time when it get broked current does not follow to start the car usually this problem occur in such case of your car... there can also be other posibilities... i would be glad to help.. Regards

Posted on Jun 24, 2009

  • Azum Saeed Jun 24, 2009

    this have cleared that your problem is of plugs wires ... change your plugs wires plz it will be good then..

×

Ad
  • Level 1:

    An expert who has achieved level 1.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Contributor
  • 296 Answers

Hi,
well dear it needs some maintenance as it has been idle for some time.So i would advise u to go to a garage and get some maintenance.

Thanks!

Posted on Jun 24, 2009

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 3,230 Answers

Hi there,

Here is a link for more info -

http://www.samarins.com/diagnose/index.html

please post back me the result.. with some exact result so we will work on it.
Thanks
Regards

Posted on Jun 22, 2009

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Replace fuel pump but why car won't start?


GMC Jimmy problems starting.. NEED HELP!! - YouTube

? 0:15
www.youtube.com/watch?v=PTtccA6xYZc
Dec 25, 2007 - Uploaded by drpottz
1995 GMC Jimmy.. brand new battery... has problems starting. ...but it just makes THIS sound and will not start. started once before and made an ... GMC Jimmy \ Chevy Blazer Fuel Tank Removal -Fuel Pump Replacement ...

Sep 19, 2015 | 1994 GMC Jimmy

1 Answer

My car starts idles for a few seconds and shuts down


Check for fuel filter restriction or defective fuel pump. Check for problems with ignition. I once had a defective ignition switch the car would start and when I drove the car it would turn off while I was driving.

Nov 16, 2014 | 2005 Porsche Cayenne

1 Answer

Car wont start


First thing I would do is to determine the fuel pump is actually still operating. Sitting for so long the moisture inside the tank may have corroded the pumps internals, when you switch on your ignition , have someone lay near the tank to hear if the pump engages and makes a whirring sound untill it pressurizes the lines. If that is ok I would disconnect the fuel filter, air compressor to blow through the lines after removing the valve on the fuel rail and fit a new fuel filter, once it is done ensure that you have fuel pressure up to the valve {in fuel rail end} Test the fuel pump also by placing a catchment bucket under the fuel filter, remove it then turn on ignition to see if it pumps fuel. might pay to also pull out the plugs and wire brush the rust off them. hope this helps.

Oct 20, 2013 | 1998 Cadillac Catera

1 Answer

2001 mitsubishi diamante not turning over


Try turning the key on and listen for the fuel pump to kick on it'll be a hum coming from the fuel tank area. If you don't hear anything then its a bad fuel pump. If you do try turning the off and on several times leaving it in the position till the humming stops then turn it off and repeat a few times then crank it if it starts then the fuel pump is weak or a clogged fuel filter which isn't allowing enough fuel to pass thru to open the injectors.

Dec 21, 2012 | 2001 Mitsubishi Diamante

2 Answers

Where is the fuel filter on a 2005 chevy malibu, 4 cylinder


  • Remove the gas cap to relieve pressure in the tank. Lift the hood and locate the fuse panel on the driver's side. Remove the fuel pump fuse. Turn the ignition and attempt to start the car; if it runs, allow it to stall. Turn off the ignition. Remove the negative terminal from the battery.
  • 2 Locate the fuel filter beneath the car between the rear axle and the gas tank. Remove the protective plastic cover with a screwdriver.
  • 3 Remove the carriage bolt securing the filter to the frame. Detach the inlet and outlet fuel line fittings with an open-end wrench. Fuel may spill as you turn the nuts, so have rags or a small container ready.
  • 4 Insert the new filter and secure the fuel lines and carriage bolt. Reattach the plastic cover.
  • 5 Replace the fuel filter fuse, negative battery terminal and gas cap. Close the hood and turn the ignition on. Allow the car to idle for a few minutes while the new filter fills with gasoline.



  • Dec 13, 2010 | 2005 Chevrolet Malibu

    1 Answer

    Car wont start when cold have replace starter switch battery and altenator and starter, have used grismer tire and repair with no fix yet what am i not doing right


    You would change the fuel filter, crank sensor and run a can of fuel injector cleaner in a tank of gas, you may also want to remove the Throttle Body cover, get a can of carb cleaner and spray the heck out of the TB do this while running throttleing it, dont let it idle, it will die out on you.

    Keep in mind that the starting problems typically come from problems with the battery, starter, fuel pump, or ignition. Checking these things in your Ford Taurus can be done with a few automotive tools. Once you have isolated the problem, you can decide to fix it yourself or take it to a professional:
    1. Place the key in the ignition and turn to the "On" position. The dashboard on your Taurus should light up. If it does not, it indicates that there is a problem with your battery.
    2. Open the hood of your Taurus and check the battery for corrosion or loose connections. For corrosion, clean the connections. Tighten any loose connections. Attach a voltmeter to the battery. The red lead goes on the positive terminal and the black on the negative. On a Taurus, 12.5 volts or better are needed to power the car, and between 13.8 to 14.5 to run the alternator. If the voltmeter shows 12.5, then the battery is okay; if it is between 12.5 to 13.8 then the alternator needs to be replaced.
    3. Turn the key in the ignition. If you hear a clicking noise, your starter is faulty and needs replacing. If there is no noise, the ignition switch could be the culprit.
    4. Turn the key in the ignition on and off for three seconds, then on again. Listen to the Taurus. In a Ford Taurus, the fuel pump operates for only two seconds. When the key is turned on, you should hear a sound similar to a growl or "rrr." If you do not hear the sound, your fuel pump is not working properly to send fuel through your car.
    5. Remove a spark plug from your Taurus and lay the wire to a metal surface. If there is no spark, the engine is not igniting properly, and you need new spark plugs.


    Keep us updated.

    Nov 26, 2010 | 2006 Ford Taurus

    1 Answer

    How do i disconnect fuel pump to change out fuel filter.01 lexus es 300


    pull the fuel pump fuse out and try to start car to relieve pressure,once that is done and the car won't start,you can remove filter,once replaced turn on ignition for 3 seconds to prime fuel system

    Jun 15, 2010 | 1992 Lexus Es 300

    1 Answer

    How do I change the fuel pump on a 2000 Acura TL?


    hi, when you turn the ignition on do you hear the fuel pump start up if you do then the pump is fine if how ever you hear nothing then the chances are its going to either be the fuel pump or fuel pump relay, if you have a look in your fuse box you should be able to find the fuel pump relay if you cant locate it then its best you get a manual to show you the relays location, you can then put a finger on the relay and when you turn the ignition on you should feel a little click coming from the relay if you hear this then the pump needs replacing but if you hear or feel nothing then the chances are the relay needs replacing.

    you can also check if the pump is working by removing the fuel feed hose from the injector fuel rail then once this is removed you put a tub under it then turn the ignition on if you have fuel shooting out then you know the fuel pump and relay are ok and you need to start thinking of some other problem such as ecu etc,

    see what you find then get back to me and ill try and assist you further ok

    May 14, 2010 | 2000 Acura TL

    2 Answers

    1999 ford taurus se 3.0l


    Your fuel pump is fitted in the fuel tank and its the thing you have to change so you either remove it and replace it with a new one as the pumps in the tanks do give problems so remove and replace OR take to your garage and ask them to do it foe you..
    And alls done..

    Oct 04, 2009 | 1999 Ford Taurus

    Not finding what you are looking for?
    Cars & Trucks Logo

    Related Topics:

    369 people viewed this question

    Ask a Question

    Usually answered in minutes!

    Top Volkswagen Experts

    Colin Stickland
    Colin Stickland

    Level 3 Expert

    22359 Answers

    Marvin
    Marvin

    Level 3 Expert

    81400 Answers

    Jeffrey Turcotte
    Jeffrey Turcotte

    Level 3 Expert

    8841 Answers

    Are you a Volkswagen Expert? Answer questions, earn points and help others

    Answer questions

    Manuals & User Guides

    Loading...