Volvo RWD 900 Forum

INDEX FOR 10/2025(CURRENT) INDEX FOR 12/2001 900 INDEX

[<<]  [>>]


THREADED THREADED EXPANDED FLAT PRINT ALL
MESSAGES IN THIS THREAD




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

1993 964 Engine Won't Start--Fuel Pump? 900 1993

posted by  blurrywagon on  Sat Jan 8 02:54 CST 2005
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS] [RELATED]

Car was driving just fine but when I went to move it to the other side of the street (I live in New York) and it would crank but wouldn't fire. Plugs checked OK but it doesn't seem to be creating pressure in the fuel rail. Swapped relays to no effect. I'm pretty sure that it is the fuel pump and I figure might as well swap the fuel filter while I'm at it.

The filter has banjo fittings on either side any advice for taking these things off? Also, should I drop the entire pump/filter bracket or will it suffice to drop one side and bend it. It's stuck so whatever is quickest for now would be helpful.








  •   REPLY TO THIS MESSAGE    PRINT   SAVE 

    1993 964 Engine Won't Start--Fuel Pump? 900 1993

    uid 19's pic
    posted by  jbowers on  Mon Jan 10 07:57 CST 2005
    Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
    last visit: Sun Jan 22 13:49 CST 2012
    [RELATED]

    There is a diagnostic pressure port on the back of the fuel rail. It has a "shraider valve" like a tire valve under the cap which looks like a metal tire valve cap. If you press on the valve stem you shoud get a squirt/spray of fuel if the pump is working. (No open flames of course!) The pressure should be over 40 PSI driving the squirt.
    --
    '96 965 with 16' wheels at 121K. Had '85 745 Turbo Diesel for 200K.








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

    1993 964 Engine Won't Start--Fuel Pump? 900 1993

    posted by  teamdrake on  Sat Jan 8 08:39 CST 2005
    Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
    last visit: Wed Jan 9 19:36 CST 2013
    [RELATED]

    as odd as this may sound I had the problem where the car would crank and not start, tried a lot of things only to find out that the air inlet hose between the filter box and the throdle body was cracked so bad that the air for the engen was drawn throught the opening and not accross the air sensor near the filter box.


    hope this is the cause of your problem, it is a nice easy and cheep fix

    Ed
    --
    1993 940 Wagon 'the shagon wagon'








  •   REPLY TO THIS MESSAGE    PRINT   SAVE 

    1993 964 Engine Won't Start--Fuel Pump? 900 1993

    posted by  DanR on  Sat Jan 8 05:18 CST 2005
    Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
    last visit: Thu Oct 23 15:25 CST 2014
    [RELATED]

    To confirm it is the fuel pump, check the fuse first, verify there is power to the spark plugs. Check by removing one plug and reconnect the coil and ground plug to see a spark, or use volt meter on test lead, located between cam and rpm sensors connections on the back of the head. Should show battery voltage with ignition switched on. Not having spark would shut down the fuel pumps.

    The last time the car ran, was it for just a short period of time, just a few seconds or under a couple of minutes when cold? If so, could be overpumped lifters (lawn mower syndrome) plenty of info in the archives on that subject.

    Fuel pump should run for a second or two when ignition key is first turned on, then shut off if engine is not cranked. Do you hear it start up?

    Someone else will have to give you advice on the filter questions. I always have a mechanic do that for me. A mushroom cloud comes to mind everytime I consider doing it myself. Plus that little hard plastic hose is prone to cracking when bent.

    DanR 94 964 273,000 miles (39,000 on the new engine)
    --
    DanR








    •   REPLY TO THIS MESSAGE    PRINT   SAVE 

      1993 964 Engine Won't Start--Fuel Pump? 900 1993

      posted by  blurrywagon on  Sat Jan 8 12:43 CST 2005
      Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS] [RELATED]

      Fuse was fine so I tried the "lawn mower syndrome" fix and all is now well. I had forgotten that I had moved it across the street the other day. No more of that from now on, promise. So, if anyone is following this thread here's the lawn mower syndrome fix:
      1) Make sure your battery is fully charged.

      2) Pull all your plugs and give the car an hour or so to think about life without plugs.

      3) Push the pedal to the floor and keep it there.

      4) Crank the ignition for a full minute (it's as scary as it sounds)

      5) The engine will begin firing in bursts about 30 seconds in, a little longer as time goes on. eventually the engine starts right up and runs like hell until the temp is up.

      Thanks for the LMS tip you saved me $150.






<< < > >>



©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.