ABS pumps @ 3mph - 1991 Deville

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Cadillac DeVille 1985 to 2005 including:
1985-1992 Fleetwood, 1993 Sixty Special, All FWD Forum Discussion, ABS pumps @ 3mph - 1991 Deville in Past Cadillac Vehicle Discussion; I just got a 91 Deville. In the morning after the car has sat in the garage, when I drive ...
  1. #1
    John Gronberg is offline Cadillac Owners Member
    Automobile(s): 1991 Deville
    Join Date
    Jul 2013
    Geneva, IL

    ABS pumps @ 3mph - 1991 Deville

    I just got a 91 Deville. In the morning after the car has sat in the garage, when I drive down the street I can here the PMV running for about 2 seconds. This is the only time it happens. After reading in the Haynes manual it indicates this is, "The Pressure Modulator Valve (PMV) will often be heard running at slow speeds as it cycles through the ABS self-test mode." Is this correct?

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    Moderator edit: NEVER post your e-mail in a worldwide forum - you might just get far more than you bargained for. Let the forum work for you. Thanks.
    Moved from Catera to Deville.

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  3. #2
    Mafiaman111 is offline Cadillac Owners Fanatic
    Automobile(s): 2001 Deville 135K
    Join Date
    Oct 2010

    Re: ABS pumps @ 3mph - 1991 Deville

    all I know is the ABS Pump will do a self test as soon as the car is started but that's for obd II cars not sure if the same applys for obd I

  4. #3
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
    Automobile(s): White Diamond '03 DHS (with DTS floor shift)
    Join Date
    Jun 2004
    Woodstock Ill.

    Re: ABS pumps @ 3mph - 1991 Deville

    Can't swear to it, but I think Haynes may be correct. That said, I would put far more faith in a FSM by Helm Inc.

  5. #4
    Submariner409's Avatar
    Submariner409 is offline If it won't run, put it on 24s
    Automobile(s): 2002.5 F55 STS - 67,500 miles, 2014 Explorer XLT FWD
    Join Date
    Feb 2006
    MD Eastern Shore, Kent Island

    Re: ABS pumps @ 3mph - 1991 Deville

    Both our 91 and 92 Taurii (OBD1) did a one second ABS self-test at about 3-5 mph after start. RRRRRRtttttttt!!!!!

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