Hello everybody,
My boost gauge reads -0.4 bar at warm idle, do I have a vacuum leak ?
I think it used to be - 0.6 bar but I'm not 100% sure.
Thank you for your help !
Vacuum leak ?
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Sveedy
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Does it read low under throttle as well ? If so then I would think vacuum leak.
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1996 850 Turbo GLH ( Goes Like Hell )
1999 V70 GLT
1996 850 Turbo GLH ( Goes Like Hell )
1999 V70 GLT
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Fiodor
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Nope, boosts strongly to 1 bar holds it.
Today I had trouble starting the car, it took several tries and more than 10 seconds of cranking.
While driving everything is fine except if I go WOT, the car then bucks quite hard, enough for me to not want to try it again.
I've pulled the codes with Torque pro and the 850-OBDII tool from the play store and neither of them have me codes.
On a cold engine the boost gauge read -0,3 bar at idle.
I also think my thermostat is broken because the temp gauge stays at 4 o'clock on the highway and only goes to 3 o'clock when the car is idling.
Today I had trouble starting the car, it took several tries and more than 10 seconds of cranking.
While driving everything is fine except if I go WOT, the car then bucks quite hard, enough for me to not want to try it again.
I've pulled the codes with Torque pro and the 850-OBDII tool from the play store and neither of them have me codes.
On a cold engine the boost gauge read -0,3 bar at idle.
I also think my thermostat is broken because the temp gauge stays at 4 o'clock on the highway and only goes to 3 o'clock when the car is idling.
1997 V70 T5 2.0 AWD with welded angle gear at 240k km
1990 740 Break (dead)
1990 740 Break (dead)
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Sveedy
- Posts: 2069
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In that case I'd replace the thermostat and the ETS that lives right under it.
From what I've read, when that goes it seems to cause all kinds of problems.
From what I've read, when that goes it seems to cause all kinds of problems.
Try to learn life's bad lessons vicariously through others.
1996 850 Turbo GLH ( Goes Like Hell )
1999 V70 GLT
1996 850 Turbo GLH ( Goes Like Hell )
1999 V70 GLT
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Sveedy
- Posts: 2069
- Joined: 11 November 2019
- Year and Model: 96 850 Turbo
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You might look into symptoms of a bad MAF. You could have a couple of things going on at the same time causing your issues.
Good luck !
Good luck !
Try to learn life's bad lessons vicariously through others.
1996 850 Turbo GLH ( Goes Like Hell )
1999 V70 GLT
1996 850 Turbo GLH ( Goes Like Hell )
1999 V70 GLT
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matthew1
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It could be collapsing intake hose under WOT, or slipping off intake - viewtopic.php?p=272395#p272395
Or it could be CBV worn out...
Or it could be CBV worn out...
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1998 V70, no dash lights on
1997 850 T5 [gone] w/ MSD ignition coil, Hallman manual boost controller, injectors, R bumper, OMP strut brace
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Also -> Amazon link. Click that when you go to buy something on Amazon and MVS gets a cut!
1998 V70, no dash lights on
1997 850 T5 [gone] w/ MSD ignition coil, Hallman manual boost controller, injectors, R bumper, OMP strut brace
2004 V70 R [gone]
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Fiodor
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CBV was replaced 2 years ago, intake hoses are 1 year old silicone hoses from do88's RIP kit, every hose seems secure to me, I could try to retighten them but they are sitting very very firmly on.matthew1 wrote: ↑03 Jan 2021, 21:30 It could be collapsing intake hose under WOT, or slipping off intake - viewtopic.php?p=272395#p272395
Or it could be CBV worn out...
1997 V70 T5 2.0 AWD with welded angle gear at 240k km
1990 740 Break (dead)
1990 740 Break (dead)
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Fiodor
- Posts: 141
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Every hose has been retightened, throttle body and intake manifold gasket replaced (noticed a bolt was missing).
Symptoms persist, stuttering at WOT without a single stutter at normal acceleration.
I noticed that the lights were flickering while revving the engine, my multimeter reads 13.4v at the battery, is my alternator failing me ?
Idle isn't perfectly stable but I don't know if it's supposed to be.
Here are three videos illustrating my problems:
Vacuum at idle and revving:
Flickering lights:
Engine idle fluctuating ever so slightly:
Symptoms persist, stuttering at WOT without a single stutter at normal acceleration.
I noticed that the lights were flickering while revving the engine, my multimeter reads 13.4v at the battery, is my alternator failing me ?
Idle isn't perfectly stable but I don't know if it's supposed to be.
Here are three videos illustrating my problems:
Vacuum at idle and revving:
Flickering lights:
Engine idle fluctuating ever so slightly:
1997 V70 T5 2.0 AWD with welded angle gear at 240k km
1990 740 Break (dead)
1990 740 Break (dead)
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