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2004 Golf V 1.9 TDI BKC: High Fuel Consumption, Reduced Performance & V-max, No Errors

medra 14892 14
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  • #1 16287770
    medra
    Level 7  
    Hello, I have a problem with the Golf V 1.9 TDI BKC 2004. The car started to burn a lot at higher speeds - at 120 km / h it burns 7 liters, at 140 km / h 8-8.5 liters. In addition, the car's performance has fallen, barely reaching to 160 km / h and later no acceleration, v-max approx. 165 km / h on a long straight line. In the car, I replaced all the filters, cleaned the EGR, cleaned the catalyst with hot water at the car wash, changed the flow meter and the vacum pump. It did not give any results. Before the appearance of symptoms in the car everything was ok, v-max about 195-198 km / h, burning at 120 km / h about 5.5 l. At the moment there are no errors.

    Dynamic logs:
    LOG-01-001: vaglog.pl/log-001_vsoh4.html
    LOG-01-003: vaglog.pl/log-003_84gAo3M.html
    LOG-01-011: vaglog.pl/log-011_dLAwi66.html
    LOG-01-003-011 (simultaneously): vaglog.pl/log-003_011_ezO4wk.html
    LOG-01-008: vaglog.pl/log-008_866v5.html
    LOG-01-013 (gentle acceleration up to 1500 rpm): vaglog.pl/log-013_mnAN0.html
    LOG-01-023: vaglog.pl/log-023_8kDFC.html

    Static logs:
    LOG-01-001: vaglog.pl/log-001_02J48.html
    LOG-01-003: vaglog.pl/log-003_ckzOP.html
    LOG-01-004: vaglog.pl/log-004_8F895.html
    LOG-01-007: vaglog.pl/log-007_8B95cDY.html
    LOG-01-011: vaglog.pl/log-011_4L1gF.html
    LOG-01-013: vaglog.pl/log-013_e7rS3.html
    LOG-01-018: vaglog.pl/log-018_W6Xla5S.html
    LOG-01-023: vaglog.pl/log-023_9zhai6k.html

    Basic settings:
    LOG-01-003: vaglog.pl/log-003_n2my5T.html
    LOG-01-011: vaglog.pl/log-011_8SZd94.html

    Additionally
    In 3rd gear:
    008: vaglog.pl/log-008_D9U10t4.html
    In 5th gear:
    008 + 011: vaglog.pl/log-008_011_DcBUGXo.html

    I am wondering about the dynamic group 008 where from 2600 rpm the value in the 4th box starts to exceed the value of the driver's wish, ie item 2, or it should not be like this:

    item value 2 [the driver's request] should be the highest;
    item value 3 [torque limit] should be the lowest;
    item value 4 [restriction of smoke] should be higher than position 3 and lower than position 2.
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  • #2 16292169
    mario03369
    Level 14  
    Turbine pumps 30% more than it has. A flow meter is probably not for this car?
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    #4 16294734
    mario03369
    Level 14  
    In the first logs turbine overloading.1.3 real bar up to 1.0 bar required. Flux corrupts the result or leaks egr, 420-440 should be 470mg / stroke.
    With the measurement of the flow meter comes out you have a motor capacity of 1700cm3. The top of the flow meter actually indicates that the recharge is 1.3 bar -985mg / suv

    Unfortunately, the fuel dose does not go up during the reloading of -46mg.
    Probably a limiter works on it. 46 mg is a normal value for recharging about 1.0 bar.
    Flowmeter calculates that instantaneous combustion is higher by turbo overloading, but the fuel dose is too low causing low engine power
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  • #6 16295221
    mario03369
    Level 14  
    Which values are in block 10 and 11 on the ignition, and give the power supply voltage of the flowmeter. Maybe this is the fault
  • #7 16295867
    medra
    Level 7  
    Logs 010 and 011 on the ignition: http://pastebin.com/zMGh0hRY

    The voltage of the flowmeter can not be measured, I try to punch the office clip into the plug (according to the youtube guide) and nothing shows.

    Could you rate the log 007 yet? http://vaglog.pl/log-007_5plpc47.html

    Made on the ignition, after the night. The temperature of the fuel strangely jumps.

    // Edit
    It turned out that I had burnt the fuse, so I do not combine with these voltages. :D
  • #8 16297153
    mario03369
    Level 14  
    Flow meter selected from the catalog?
  • #9 16299492
    medra
    Level 7  
    Yes, the flowmeter's sign is correct.

    Logs on the old flow meter:
    On the 3rd gear: http://vaglog.pl/log-008_866v5.html
    On the 5th gear: http://vaglog.pl/log-010_011_rS09u.html

    Logs on the replaced flow meter with the same sign:
    On the 3rd gear: http://vaglog.pl/log-008_D9U10t4.html
    On the 5th gear: http://vaglog.pl/log-008_011_DcBUGXo.html

    Maybe you could read something from it. I could stack other groups, but I did not think and now I do not have this flow meter.
  • #10 16299572
    mario03369
    Level 14  
    Enter flow number. In your logs there is no value for the new flow meter.

    In 1.9 tdi there are two types of flows, maybe someone used to insert the latter one.
  • #11 16299634
    medra
    Level 7  
    038906461B

    The flow was once mentioned by the previous owner, because I saw when dismantling an inscription with the white paint "1.9 TDI" typical for parts with shakes. On this flow he walked well and suddenly broke down, so I think the sign is good. I am not sure if this meter, which I replaced, was in working order (it used to be on the shelf for some time). Have you seen the log 007 and the variable fuel temperature? Maybe this sensor would also have an effect on increased combustion?
  • Helpful post
    #12 16299700
    mario03369
    Level 14  
    No proper flow. Fuel temperature jumps by 1 degree. Is that what it is?
  • #13 16299706
    medra
    Level 7  
    Yes, after a night on the engine off.

    The flowmeter will try to find some other one and then put something to sleep. If I had confidence, I would buy a new one, but if it turns out that this is not the reason, PLN 350 is in the back. ; /
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  • Helpful post
    #14 16299727
    mario03369
    Level 14  
    At PW I wrote about your temperature and more :)
  • #15 16343422
    medra
    Level 7  
    I decided to pursue the topic to solve my ailments. I tested several flowmeters and only at the last combustion dropped (a little), but every now and then, he would crash the error. I bought a new one and my fault appeared on the first long ride. The speed suddenly began to fall, golf began to kick and began to hiss during acceleration. It turned out that the new flowmeter helped in finding the fault and blew a larger hole that could be traced immediately. Replaced the inlet hose from the turbine and everything returned to normal. Burning has dropped, power has arrived and v-max 195 km / h.

    Thank you to mario03369, he helped me find the fault.

Topic summary

The discussion revolves around a 2004 Volkswagen Golf V 1.9 TDI BKC experiencing high fuel consumption and reduced performance. The owner reports fuel consumption of 7-8.5 liters at higher speeds and a maximum speed of approximately 165 km/h, down from 195-198 km/h. Despite replacing various components including filters, EGR, catalyst, flow meter, and vacuum pump, no errors were detected. Analysis of dynamic logs indicated potential issues with turbo overloading and incorrect fuel dosing. Suggestions included checking the flow meter and EGR for leaks, as well as verifying the correct flow meter type. Ultimately, after testing multiple flow meters, the owner found that replacing a damaged inlet hose resolved the issues, restoring fuel efficiency and performance.
Summary generated by the language model.
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