Help with 86
Thread Starter
Joined: Mar 2008
Posts: 4
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Help with 86
My 86 760 GLE Turbo starts to miss, stall, etc once the engine is warmed up, it will usually get me home, but just barely(have had to have it towed from this issue).
It will do this even if you start it and let it warm up just sitting - after it reaches operating temp it will surge a couple times, shutter, miss and stall - starting up is usually not an issue, but I did have one time it wouldn't.
I have replaced (mostly with used tested parts) the following:
Distributor
MAF
Power Stage
Injector resister pack
pre-heat hose
I have checked all the vacuum lines and wiring.
[/align]
[/align]I thought I had the problem resolved after replacing the Ign. Pwr Stage - I ran the car on a long trip, much of which was mountainous twisty roads, I ran the car hard and it ran flawlessly, got 21 mpg and was a joy - I ran it around home for a couple weeks after the trip and then the problem started on the way home from a car cruise. I replaced the Ign Pwr Stage with another known good one, but the problem still exsists.
I don't really want to keep throwing parts at it needlessly - what should my next step be.
If you have suggestions of parts to replace - please also tell me where they are located.
I enjoy this car SO much when it is running good - I want to be able to enjoy it without that twisted feeling in the gut every time I take it out.
What is/are my next step/steps?
[/align]
__________________
Keith Bleakney
Mars PA USA
67 Buick Special Deluxe
72 Buick Centurion Conv
86 Volvo 760 GLE Turbo
[/align][/align]
[IMG]local://upfiles/15540/3C57F375D0C54F8F8FB1D136AE4F845D.jpg[/IMG]
It will do this even if you start it and let it warm up just sitting - after it reaches operating temp it will surge a couple times, shutter, miss and stall - starting up is usually not an issue, but I did have one time it wouldn't.
I have replaced (mostly with used tested parts) the following:
Distributor
MAF
Power Stage
Injector resister pack
pre-heat hose
I have checked all the vacuum lines and wiring.
[/align]
[/align]I thought I had the problem resolved after replacing the Ign. Pwr Stage - I ran the car on a long trip, much of which was mountainous twisty roads, I ran the car hard and it ran flawlessly, got 21 mpg and was a joy - I ran it around home for a couple weeks after the trip and then the problem started on the way home from a car cruise. I replaced the Ign Pwr Stage with another known good one, but the problem still exsists.
I don't really want to keep throwing parts at it needlessly - what should my next step be.
If you have suggestions of parts to replace - please also tell me where they are located.
I enjoy this car SO much when it is running good - I want to be able to enjoy it without that twisted feeling in the gut every time I take it out.
What is/are my next step/steps?
[/align]
__________________
Keith Bleakney
Mars PA USA
67 Buick Special Deluxe
72 Buick Centurion Conv
86 Volvo 760 GLE Turbo
[/align][/align]
[IMG]local://upfiles/15540/3C57F375D0C54F8F8FB1D136AE4F845D.jpg[/IMG]
Administrator
Joined: Sep 2004
Posts: 36,349
Likes: 45
From: Orlando, Florida
RE: Help with 86
Look on the front of the engine on the passenger side. Do you have a valve that screws to the turbo or a pipe that goes to the turbo?
Some had it and the Allen screws would work loose and cause a vacuum leak.
Some had it and the Allen screws would work loose and cause a vacuum leak.
Senior Member
Joined: Oct 2007
Posts: 369
Likes: 0
RE: Help with 86
My 1987 740 turbo would skip once in a while. I tried replacing the fuel pressure regulator, which didn't solve the problem. Then I replaced the fuel injection relay-and so far, it's been running fine. Gremlins are harder to detect, but if you ever have a no-start, visit www.stepbystepvolvo.com for a free 740 no-start guide (don't know if it applies to a 760).
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markjenross
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Nov 7, 2007 08:02 PM