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Model specific boards => Golf mk4 => Topic started by: Dalo Harkin on 14 May 2014, 16:47
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Hi Guys,
Car has been screetching the last week or so when starting her up (I know starter motor) but I thought I will replace when I have the time.....
So today car started ok, it screetched but started, drove to work, then had to nip out so parked up and then when I came back to it, it really struggled to start but did on the second attempt, so I drove back to work but thought id keep it running for a while, while it was idling it just cut out and now it wont start, its turning over but no spark it seems, so my thoughts were fuel pump or maybe plugs, anyone got any other ideas?
Cheers
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I can't help i'm afraid but do have a MK4 fuel pump and sender for sale - £15posted :smiley:
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Do you hear the fuel pump priming? You checked the fuel pump relay?
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get it plugged in to vcds or similar, this might narrow your search right down
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If it is the original fuel pump from factory then I would definitely change it. Mine use to do similar things now and then, but it was'nt until I went for my stage 2 remap at R-tech that the fuel pump issue was diagnosed. Apparently they are prone to go, especially if the car has done over 100k
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The fault codes I got when it broke were:-
18048 - engine control module EEPROM - I have read into this and it can be a phantom code
17743 - engine torque monitor 2 - control limit exceeded
18010 - battery cables removed - yes I did this last week
17521 - lambda - I know the pre cat one is shot (has been for ages, on my 'to do' list)
16706 - Engine speed sensor G28 no signal - now I have seen this code before on my car but it went away and never came back until now.
So, any thoughts?
I thought about the fuel pump, but it just seems odd how the car seemed to cut out when warm and then when I went back after it cooled down it fired straight up, same at the garage, they started it yesterday morning twice without fail..
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The fault codes I got when it broke were:-
18048 - engine control module EEPROM - I have read into this and it can be a phantom code
17743 - engine torque monitor 2 - control limit exceeded
18010 - battery cables removed - yes I did this last week
17521 - lambda - I know the pre cat one is shot (has been for ages, on my 'to do' list)
16706 - Engine speed sensor G28 no signal - now I have seen this code before on my car but it went away and never came back until now.
So, any thoughts?
A throttle body alignment will sort out the 17743 code, it did for me. If not, then I was advised to loosen the the preload on the actuator a little bit, like half or one full turn. Definitely get that lambda sorted asap though!
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I was planning on cleaning the MAF and doing the TB that night it died! lmao
Speed sensor is going to be replaced I think and then go from there...
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Engine speed sensor is the crank sensor if im right. They can deteriorate because of the heat from the engine.
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Engine speed sensor is the crank sensor if im right. They can deteriorate because of the heat from the engine.
That's the one mate, its to the side of the oil filter on the block,. Its all fitted now so I'll have to see how I get on :smiley:
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your cat won't last long if your pre cat lambda is dead...
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Engine speed sensor is the crank sensor if im right. They can deteriorate because of the heat from the engine.
That's the one mate, its to the side of the oil filter on the block,. Its all fitted now so I'll have to see how I get on :smiley:
Sounds like you've found the cause. Classic symptoms if once warm the car refuses to restart until the sensor has cooled down