Volvo AWD 850 Forum

INDEX FOR 10/2025(CURRENT) INDEX FOR 10/2004 850 INDEX

[<<]  [>>]


THREADED THREADED EXPANDED FLAT PRINT ALL
MESSAGES IN THIS THREAD




  REPLY TO THIS MESSAGE    PRINT   SAVE 

850 Turbo Deceleration Stall, won't restart but will start cold 850 1995

posted by  wally7734 on  Sun Jul 26 05:26 CST 2009
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Sun Jul 26 13:21 CST 2009
[RELATED]


150k miles, 15k on new fuel pump.

Stalled pulling off the expressway, foot was on the brake when it happened. Started strong once after sitting for 10 minutes, but coughed and died after 2s, towed it home. Started strong and ran 2 hrs later.

I don't know much about the 850 series yet, this was my brother's car. Since it died after (I'm assuming) the deceleration fuel shutoff was in effect, since my foot was not on the gas at speed, I am guessing one of the following must be wrong:

- Something to do with idle / hot-start / deceleration fuel shutoff (is there a deceleration switch?) What do I need to look for if this is the case? Can the deceleration shutoff get "stuck on" somehow (sticky switch or throttle linkage?)

- The fuel pump was overheated and failed, once cooled down it worked again (seen this before on another car). I'm Skeptical about this since the pump is relatively new. Only way to test is to drive the car and wait for it to fail. I could do a pressure test also, what if the pressure readings were within limits?

TIA for any advice.








  •   REPLY TO THIS MESSAGE Replies to this message will be emailed.    PRINT   SAVE 

    850 Turbo Deceleration Stall, won't restart but will start cold 850 1995

    posted by  KlausC on  Wed Jul 29 15:52 CST 2009
    Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
    last visit: Fri Oct 24 10:15 CST 2014
    [RELATED]

    Start carrying a fuem pump relay, number 103 in the fuse tray. If it happens again when the engine gets hot (relay also gets warm), when you try starting the car:
    Trun the radio off.
    Put the key into position II.
    Listen for the fuel pump whirring for a second or 2.
    If the fuel pump runs, the car should start.
    If the fuel pump does not run, replace the relay.

    Get your self a torx screw driver, you will find them handy on the 850s.

    Klaus
    --
    The more I learn, the more I forget. So why learn?








  •   REPLY TO THIS MESSAGE    PRINT   SAVE 

    850 Turbo Deceleration Stall, won't restart but will start cold 850 1995

    posted by  rkmacman on  Sun Jul 26 14:24 CST 2009
    Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
    last visit: Thu Dec 12 07:58 CST 2013
    [RELATED]

    I never heard of a deceleration switch. What brand of auto is that on ?
    Try testing your fuel pressure regulator just below the fuel rail on the passenger side. There might also be a fuel leak somewhere.







<< < > >>



©Jarrod Stenberg 1997-2022. All material except where indicated.


All participants agree to these terms.

Brickboard.com is not affiliated with nor sponsored by AB Volvo, Volvo Car Corporation, Volvo Cars of North America, Inc. or Ford Motor Company. Brickboard.com is a Volvo owner/enthusiast site, similar to a club, and does not intend to pose as an official Volvo site. The official Volvo site can be found here.