Volvo RWD 900 Forum

INDEX FOR 10/2025(CURRENT) INDEX FOR 3/2002 900 INDEX

[<<]  [>>]


THREADED THREADED EXPANDED FLAT PRINT ALL
MESSAGES IN THIS THREAD




  REPLY TO THIS MESSAGE    PRINT   SAVE 

Pinging problem 900

posted by  Cameron945 on  Sat Aug 28 02:57 CST 2004
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS] [RELATED]

I have a 1996 940 with the low pressure turbo (about 4 psi IIRC). It has the B230FK engine and it uses the same part numbered LH 2.4 and EZ116K ECU's as the B230FT. It has 105000km only on the clock.

The problem is light pinging at light to medium load at about 2000rpm especially with the A/C on. I think I have been through all the possibilities namely: I always use 98 octane, the fuel injectors have been cleaned, the EGR system does not appear blocked, the knock sensor is torqued correctly, the combustion chambers have been cleaned, I have not detected any vacuum leaks and with such a small turbo, I can't see any possibility of over-boost. The car runs perfectly otherwise.

Is there anything else I can try other than fiddle with the EZK computer to retard the timing???

Is a light rattle for a few seconds anything to bother about anyway??

Has anyone had similar problems? This is getting interesting!

Cheers
Cameron








  •   REPLY TO THIS MESSAGE    PRINT   SAVE 

    Pinging problem 900

    posted by  Doug Hewitt on  Sat Aug 28 08:19 CST 2004
    Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
    last visit: Mon Apr 30 23:50 CST 2012
    [RELATED]

    Hello Cameron

    I have had the same problem. You mentioned that the combustion chambers are clean but you may wish to try the following. Attach a hose to one of the larger vacuum ports on the intake manifold. With the engine running just above idle, slowly spray the entire can of Mopar Combustion Chamber Cleaner, part number 0VU00788, into the end of the open vacuum hose. Shut down the engine and restart 12 hours later. A short brisk ride should bring instant gratification, no pinging, and possible a more responsive engine. I sure worked for me.

    Bye for now
    Doug








    •   REPLY TO THIS MESSAGE    PRINT   SAVE 

      Pinging problem 900

      posted by  Doug Hewitt on  Sat Aug 28 08:22 CST 2004
      Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
      last visit: Mon Apr 30 23:50 CST 2012
      [RELATED]

      Hello Cameron

      I have had the same problem. You mentioned that the combustion chambers are clean but you may wish to try the following. Attach a hose to one of the larger vacuum ports on the intake manifold. With the engine running just above idle, slowly spray the entire can of Mopar Combustion Chamber Cleaner, part number 0VU00788, into the end of the open vacuum hose. Shut down the engine and restart 12 hours later. A short brisk ride should bring instant gratification, no pinging, and possibly a more responsive engine. It sure worked for me.

      Bye for now
      Doug







<< < > >>



©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.