Volvo AWD 850 Forum

INDEX FOR 10/2025(CURRENT) INDEX FOR 2/2021 850 INDEX

[<<]  [>>]


THREADED THREADED EXPANDED FLAT PRINT ALL
MESSAGES IN THIS THREAD




  REPLY TO THIS MESSAGE    PRINT   SAVE 

no start, no codes? 850 1997

posted by  irvingwashington on  Sun Oct 4 18:42 CST 2015
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Wed Aug 21 21:20 CST 2013
[RELATED]

So, of course, the girlfriends 97 850 GLT fails to start late this afternoon. It'll just crank and crank. Started fine Friday when it was parked. After monkeying with it for past 2 hours, I'm totally baffled.

So here's what I've checked:
- one non-significant code (P0108)
- fuel pressure at rail and fuel pump audible
- ignition coil (even swapped in a spare coil I had)
- rotor and cap (rotor ~1200 ohm resistance IIRC)
- Pulled a plug and verified spark at plug as well
- Pulled CPS, which I replaced ~1 year ago, and it was clean and the pickup looked unscathed.

The last time I had this happen, the CPS was bad (the pickup had actually broken and bent the camshaft follower), but I knew that because it was throwing a code for it. Is it possible the CPS is bad, but the computer isn't detecting it? Anything else I should try?

Thanks!
--
93 240 170k, 97 850GLT 165k








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

    no start, no codes? 850 1997

    posted by  B.B. on  Mon Oct 5 18:52 CST 2015
    Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
    last visit: Mon Oct 6 13:15 CST 2014
    [RELATED]

    I agree with David. You can have fuel at the rail, but the injector relay,
    (Volvo calls it something else) is at the radiator and needs to be working to enable the injectors.

    If you have fuel at the rail, and dry plugs, then you can focus on that relay
    above the radiator.

    Bill








  •   REPLY TO THIS MESSAGE    PRINT   SAVE 

    no start, no codes? 850 1997

    posted by  someone claiming to be David on  Mon Oct 5 17:38 CST 2015 [RELATED]

    Fuel pump relay is the most common (located in the under the hood fuse box). A second possibility is the fuel injector relay (located on the radiator). I did have a CPS problem that initially didn't trip a code, but ultimately that was the problem.








    •   REPLY TO THIS MESSAGE    PRINT   SAVE 

      no start, no codes? 850 1997

      posted by  someone claiming to be Dg on  Mon Oct 5 22:47 CST 2015 [RELATED]

      Try unplugging the maf sensor on the air box and crank. If it starts that's ur problem.







<< < > >>



©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.