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850 / S70 & V70 '96-'99 / C70 '97-'05 General Forum for the 850 and P80-platform 70-series models |
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Loss in boostViews : 9588 Replies : 129Users Viewing This Thread : |
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Feb 23rd, 2008, 19:10 | #81 |
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Nice one. Glad you've narrowed it down.
Mine has been annoying today or not depending on how you look at it. I went to the meet at Halifax and no judder or loss of boost!!! Hmmmmm, now i'm confused. But I've always thought it was temp related and it was quite warm today,,,,,,, or am I clutching at straws??!!! George
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Feb 23rd, 2008, 19:15 | #82 | |
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Me to
Quote:
If you don't fix it before Marham perhaps we can have a little area where the sick R's can park together!!
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Feb 23rd, 2008, 19:20 | #83 |
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Good idea but i hope to have it sorted by then. But then again i've had it since the autumn.
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HAD; 440 GLT(Loved it), 850 GLT auto(Loved it), S70 2.5T(Nothing but problems!), 850R auto(Loved it!!), S60 D5 SE (Nothing but problems!) GOT; S60 D5 SE Lux Auto RAF Marham Track Day Co-Ord' |
Feb 23rd, 2008, 19:27 | #84 | |
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Quote:
Maybe you have already inadvertently sorted it the other day!
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Feb 23rd, 2008, 22:31 | #85 | |
diy bhp
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Quote:
be lucky, wayne.
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auto 96 T5 tweaked n ratted |
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Feb 23rd, 2008, 22:34 | #86 |
diy bhp
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by the way andy, crem example of an 850R mate.
wayne
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auto 96 T5 tweaked n ratted |
Feb 24th, 2008, 00:57 | #87 |
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Feb 24th, 2008, 12:49 | #88 |
diy bhp
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andy and jod, found the source of my missfire that developed on the way down to meet you... number 1 plug lead had a small hole blown through the side of the plastic cover that sits over the plug and it had been arcing onto the side of the ally plug recess.
first plug lead i removed was the prob, if only all probs were as simple to fix huh. wayne
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auto 96 T5 tweaked n ratted |
Feb 24th, 2008, 13:07 | #89 |
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Nice one Wayne like a simple fix!
Regarding my car... Welcome into the equation a spanner which has been thrown into the works. Went for a drive in the car today, being as it was one of those nice sunny mornings, car drove just as it has been recently relatively no boost. However after about 15 mins into the drive guess what!!!! Yes thats right the bloody thing started boosting properly again I mean WTF I thought it was all plain and simple but now I am begining to wonder whether the ECU is at fault or something?? Only reason I am thinking that is the MBC obviously bypasses the ECU's control of the boost pressures and yesterday we got full boost with the MBC fitted. Everything else showed the same fault and certainly for all of the drive home yesterday, about 80 - 100 miles, it was boosting poorly and today it started off boosting poorly then all of its own accord back to normal again!! Think the car is trying to annoy me now!! lol Anyone ever experienced a fault with the ECU or a Rica which could replicate such a fault? One other thing Jod found bizzare yesterday was that his diagnostic code reader wouldn't communicate with the ECU in certain modes. I wonder if this is due to an ECU fault?
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Feb 24th, 2008, 13:40 | #90 |
diy bhp
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hmmmm, thats about bloody right isnt it !!!
only way to find out for sure bud is to put a known good actuator on her and if that gives no boost all i can think of is your ecu is having a melt down and getting your bcs to open the actuator too early. we had it boosting with the mbc and boosting when i tightend the actuator arm right up, i still think its the actuator misbehaving though. unfortunately im not familiar with an actuators internals so i cant give a theory as to why the boost sometimes returns. possibly a diaphram split which sometimes seals itself ??? wayne
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