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My mk5 1.6 engine code BGU,it cut off fuel while idleling or driving,i change fuel pump in the tank still the same,can the fuel pump relay be the problem here please help before i spend too much money

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  • Cars & Trucks Master
  • 2,963 Answers

See if this will help:

http://workshop-manuals.com/volkswagen/golf-mk5/power_unit/4-cylinder_injection_engine_(1.6_l_roller_rocker_finger)/engine_cooling/removing_and_installing_parts_of_cooling_system/coolant_hose_schematic_diagram_engine_codes_bgu_bse_and_bsf/

Posted on Apr 08, 2015

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6ya6ya
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Posted on Jan 02, 2017

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thaurfen
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SOURCE: Fuelpump problem 2000 Suburu outback

check fuel lines for leaks...
good luck

Posted on Aug 16, 2008

  • 1 Answer

SOURCE: expert van 2.0 hdi engine runs lovely until you

Hi You need to get the ecu checked for fault codes if there are none it is possibly low fuel pressure you should allso check this have you changed the fuel filter or opened any fuel lines this could introduce air
which will lower fuel pressure.Good luck Chris.

Posted on Mar 24, 2009

  • 1 Answer

SOURCE: 1993 Jeep Grand Cherokee Fuel Pump?

Between 100-140 thousand miles the fuel pumps go out on the 1993 cherokee. Its a fact. All parts are manufactured with the knowledge that it will last for a specific period of time then it dies. The relay switch was helpful for a brief while because there was still some juice in that pump, but now that it is gone it is gone.

If you don't see the fuse box under the dash in the driver leg area or beneath the radio check for a covered box under the hood. There should be a fuse spec guide on the lid of the box that tells you where specific wattage should go and for what purpose. But, your fuel pump problem will not be solved by a new fuse.

Posted on May 25, 2009

  • 59 Answers

SOURCE: toy turns over but wont run change fuel filter n fuel pump still

The fuel pump should run for a second or two when you first turn the key on, but then shuts down to prevent the engine from flooding if the computer does not get a signal from the crank or cam sensors which the computer uses to trigger the ignition system. So no spark no fuel. Check to see if you have a spark in the ignition system.

Posted on Aug 28, 2009

  • 9 Answers

SOURCE: '96 f150,4.9 six,dual fuel tanks,replaced front

I have a 1996 f150 and I had the same problem. I finally found out that the rear fuel pump is the main pump, and if it goes out then the front pump will not work either. There is a groud that both pump share on the rear cross member. If you are not getting good connection with the ground the fuel pumps will not work. Also if you replace the rear pump and it still does not work then your problem could be the fuel tank selector switch, it acts as a relay if it goes out then neither pump will work.

Posted on Aug 10, 2010

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Engine cut off while driving down the highway why?


Fuel pump may be failing. Check fuel pressure at injector rail. If pressure is good and stays good, suspect fuel pump relay may be getting weak.

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The worst case would be a failing fuel pump (they tend to be pricey, and are a pain to change).

Another possibility is contamination in the fuel tank such as dirt, rust flakes or solid products of fuel degradation - this would clog up the new fuel filter very quickly. It wouldn't be good for the fuel pump either. Check the tank for signs of corrosion, especially around the filler tube. A quick test of the filter is to disconnect the outlet side first - if you get just a dribble of fuel out of there, then a good stream of gas from the inlet side, that is an indication of a clogged filter and therefore a tank problem. You could try to siphon or pump a sample of fuel from the bottom of the tank through the filler tube for inspection.

A third possibility is a sensor or computer problem. It seems unlikely a single-point failure would take out all of the injectors unless it's the injector power common. Maybe the engine computer uses a single buffer chip to drive the fuel injector transistors, or there's a bad power bypass capacitor for the injector power. Engines don't usually stall on sensor failures - they keep running, but often with degraded performance, and you'll get a check engine code. Check for voltage on the fuel pump relay before changing it - when the engine is on, there should be 12 V on the coil, and 0 Volts on the contacts. If you get voltage across the normally open (NO) contacts when the coil is energized, the relay contacts are bad. (The tricky part is getting at the relay socket terminals with the relay in place.)

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2 Answers

Engine cuts off


Check the relays. A worn connection could cause this.
The fuel pump relay is often the culprit.
If you try twisting the relays, gently while it's running, or while you try starting it, you may find the problem.
Hope that's it.

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