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Model specific boards => Golf mk4 => Topic started by: Big Tone on 05 July 2010, 06:15
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Morning,
driving in to work this morning, gave it a bit to overtake someone.....power all over the place, boost on, then off then on again, felt a bit sluggish, traction control light on and will not go off.
She had a new N75 last week, will scan for codes tonight but has anyone experienced anything like this before?
I am getting real fed up now, just when things seemed to be going right it all goes T*TS up again.
I have noticed over the last two days that I also have a little wobble on the steering at about 50-60mph, don't drive like a plank, haven't gone over any potholes or anything, it has just started!!!! :angry: :angry: :angry: :angry:
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traction light on and loss of power usually points to a dead MAF
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Lucky I have one at home in the shed then! I will do a scan when I EVENTUALLY finish work!
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ive had the traction control light on and it was down to a faulty MAF, had a new one fitted, codes cleared and all is well :cool:
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Just scanned and got codes;
16487 - Mass Air Flow (G70): Signal too high
P0103- 35-10 - - - Intermittent
and
01314 - Engine Control Module
013 - Check DTC Memory - Intermittent
Could these both be caused by dodgy MAF, or are they seperate issues?
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the 01314 code will have been in the ABS module - that's just the system reporting that the ECU has "borrowed" the esp/mil/check engine light.
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Nothing to do with a bad earth strap then, read about these potentially blowing the ECU.
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no just clear that one after you clear the maf code and it should stay gone
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Nice one! going to fit new MAF now, the one I bought 6months ago and didn't need! handy eh? :laugh:
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Here's a question;
How does the MAF affect the boost, cos she was hissing like a banshee when accellerating as well as jerking on the boost
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the hissing noise will be the wastegate venting as your maf is reading high so the ecu "dumps" what it thinks is the extra air/boost in the system. I would assume the jerking is a misfire as the maf signal is sending dodgy readings but not quite exceeding the upper limit that triggers the 16487 code
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Ahh,
I see, Nice one toph!
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not good. fitted new maf and hs still the same. pretty sure all boost hs being vented to wastegate. it sounds like a whirlwind under the bonnet. new n75 new maf. where to next?
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did you clear the codes? might be in limp mode
check there isn't a boost hose popped off too because that can sometimes trick the ecu into thinking the maf is dead
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I did clear the codes, took her for a spin, same again, less jerky though, more like a smooth hissing/tornado!
Exact same codes came back, but no "17705 - Pressure drop between......." though, just the MAF one!
Will check boost pipes tonight when I am back from work "again" because it does sound like the turbo is producing loads of boost, its just all going to waste.
I will be back.
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Well, f*ck me, I have found the problem.
The boost gauge which I fitted at the weekend came with its own length of silicon hose. Which at the time I thought,
"thats a bit soft"
When under vacuum the hose collapses in on itself and kinks over, then when on boost the air to the FPR is cut off/restricted massively. It looked like this thing was alive when revving the engine.
Replaced now with some proper stuff so fingers crossed.
(I say fingers crossed cos i haven't actually taken it out yet :tongue: :tongue: :tongue:)
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i better check mine m8 lol :grin:
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Ha ha, also noticed a bit of a boost leak on the charge to pancake pipe, going to ditch the cr*p o ring/c clip arrangement and fit a silicon reducer!