Just completed a valve job and the car ran great except the boost was a bit weak. Gradually got to be no boost. But the car was otherwise driving well, no drivability problems at all.
Then the TPS went out. Replaced it and it was driving well again. Then the MAF went out. Replaced it and it was was driving well again. Then the rear O2 sensor went out, replaced it. All above were OBDII codes. Now it is driving like crap.
No CEL this time - No codes. Hesitates from a start and hunts at 45mph. So this is a separate problem to the lack of boost.
Re: the turbo....
I have checked the turbo, it spins and has no end play.
I have replaced all the vacuum hoses, in fact I installed an IPD TCV and CBV and got the tool to set the actuator adjustment as well.
It was bad enough trying to trace the boost problem, now trying to trace two problems it is driving me crazy. Starting to have turbo nightmares!
What have I missed? Anyone have similar problems?
1996 850 Turbo No boost. RESOLVED
1996 850 Turbo No boost. RESOLVED
1996 850 Turbo Sedan
2002 VW Passat 4-Motion (wife's wheels)
1984 F-150 4wd.
Previous interesting vehicles:
1974 Ferrari Dino 246 Spyder
1973 Bentley S Sedan
1956 Jaguar XK140 Roadster
1929 Salmson (first production DOHC engine)
1926 Darracq Tourer
2002 VW Passat 4-Motion (wife's wheels)
1984 F-150 4wd.
Previous interesting vehicles:
1974 Ferrari Dino 246 Spyder
1973 Bentley S Sedan
1956 Jaguar XK140 Roadster
1929 Salmson (first production DOHC engine)
1926 Darracq Tourer
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jblackburn
- MVS Moderator
- Posts: 14043
- Joined: 8 June 2008
- Year and Model: 1998 S70 T5
- Location: Alexandria, VA
- Has thanked: 9 times
- Been thanked: 19 times
Loose clamps!!! Check them all the way down to the intercooler and back up, giving each hose a good, solid tug.
'98 S70 T5
2016 Chevy Cruze Premier
A learning experience is one of those things that says, "You know that thing you just did? Don't do that."
mercuic: Long live the tractor motor!
2016 Chevy Cruze Premier
A learning experience is one of those things that says, "You know that thing you just did? Don't do that."
mercuic: Long live the tractor motor!
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matthew1
- Site Admin
- Posts: 14466
- Joined: 14 September 2002
- Year and Model: 850 T5, 1997
- Location: Denver, Colorado, US
- Has thanked: 2652 times
- Been thanked: 1242 times
- Contact:
Vacuum hoses +1. Also check the TCV routing. An experienced Volvo tech put the hoses on the new TCV in my 2004 V70 R incorrectly a few years ago during a mega 90k service, and it was a strange shakedown drive, let me tell you.
Help keep MVS on the web -> click sponsors' links here on MVS when you buy from them.
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]
How to Thank someone for their post
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]
How to Thank someone for their post
I found a hole in one of the intercooler hoses. That simple. But thank you for making me carefully inspect each hose!
1996 850 Turbo Sedan
2002 VW Passat 4-Motion (wife's wheels)
1984 F-150 4wd.
Previous interesting vehicles:
1974 Ferrari Dino 246 Spyder
1973 Bentley S Sedan
1956 Jaguar XK140 Roadster
1929 Salmson (first production DOHC engine)
1926 Darracq Tourer
2002 VW Passat 4-Motion (wife's wheels)
1984 F-150 4wd.
Previous interesting vehicles:
1974 Ferrari Dino 246 Spyder
1973 Bentley S Sedan
1956 Jaguar XK140 Roadster
1929 Salmson (first production DOHC engine)
1926 Darracq Tourer
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