Volvo 850 Made from 1993 to 1997, this Volvo line was available in both a wagon and a sedan, both with were graced with several trim levels.

Volvo 850 starts but will not stay running - won't idle.

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  #21  
Old 04-17-2012, 09:36 PM
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You can continue to ignore me, its ok. My car runs though...just a thought. Get a fuel pressure gauge and find out whats really going on at the rail. I think you have low fuel pressure.
 
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Old 04-17-2012, 09:37 PM
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Plugs, Wires, Distributor, Cap, O2, MAF, IAC. There is a chance that you have a bad throttle control switch.
 
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Old 04-17-2012, 09:39 PM
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Originally Posted by boxpin
You can continue to ignore me,
That has started to bother me lately. I'm starting to think some people don't want my help. I'm thinking about putting this statement in my signature... "If you don't answer my questions, you don't want my help".
 
  #24  
Old 04-17-2012, 09:56 PM
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Originally Posted by boxpin
You can continue to ignore me, its ok. My car runs though...just a thought. Get a fuel pressure gauge and find out whats really going on at the rail. I think you have low fuel pressure.
I'm sorry I wasn't meaning to ignore you. I was trouble shooting the IAC and MAF first (seeing as I can do these without jacks and extra equipment), I will however try to test the fuel pressure in the next couple days. Its hard to test everything in one day when I dont have the proper equipment.
 
  #25  
Old 04-17-2012, 10:56 PM
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Here's another bit of info that kept slipping my mind. Sometimes when I'm accelerating (since the problem started) the car will loose revs for a split second like it dies but recovers. Its usually bad enough to cause light recoil like the car is hiccuping. I don't know if this sheds anymore light on the matter.
Once again thanks for the advice, and I have been reading everything. I will try every bit of advice that you guys give me. Thanks
 
  #26  
Old 04-19-2012, 07:57 AM
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Dirty,

When your car does the "hiccup" thing how long has it been running? I have heard others mention this phenomenon. Mine does this also after about ten minutes of running(after it reaches operating temps). Although this is purely conjecture on my part I believe this happens when it goes into closed loop or open loop(I am not sure which is which).
 
  #27  
Old 04-19-2012, 12:59 PM
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Originally Posted by ddbeckwith
Dirty,

When your car does the "hiccup" thing how long has it been running? I have heard others mention this phenomenon. Mine does this also after about ten minutes of running(after it reaches operating temps). Although this is purely conjecture on my part I believe this happens when it goes into closed loop or open loop(I am not sure which is which).
It usually happens after the car has been on for atleast a minute, and I'm getting up to speed. So usually its been doing it when I get onto the freeway. I'm thinking that it has to do with whatever is causing my idle problems. As the days go on the car is getting worse and worse. Past couple times I've been forced to drive it to school it fights me even going down the freeway like its trying to die but the revs are too high and over comes it.
 
  #28  
Old 04-19-2012, 07:10 PM
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If it happens when you try to speed up it could be that you have an intake hose/tube collapsing on you. Pop the hood with the car running, hit the throttle and see if any of your tubes collapse.
 
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