85 Seville 4.1 Knocking?

Cadillac Forums | Help Us Help You | Advertise | Cadillac Parts | Cadillac News | Cadillac Classifieds

Cadillac Technical Archive | Cadillac Dealers | Cadillac Reviews | Cadillac Dealer Reviews | Cadillac Vendors

CadillacForums.com is the premier Cadillac Forum on the internet. Registered Users do not see the above ads.
+ Reply to Thread
Results 1 to 2 of 2
HT4100 4.1, 4.5, 4.9 Discussion, 85 Seville 4.1 Knocking? in Cadillac Engine Discussion; As stated I have a 85 seville with a 4.1 (34000 mi). The problem is that after a long drive ...
  1. #1
    1BURBAN is offline Cadillac Owners Member
    Automobile(s): Cadillac SEVILLE (85)
    Join Date
    Aug 2007

    85 Seville 4.1 Knocking?

    As stated I have a 85 seville with a 4.1 (34000 mi). The problem is that after a long drive at interstate speed the motor sound like it has a knock coming from the front drivers side of the motor. I suspected the vacume pump so I removed it after driving the car long enough to get it to make the knocking sound. that stoped it. So I put the new vac. pump on then a couple days later after driving at highway speed it started knocking agian.If I let it sit for a while it wont do it and it won't do it on short trips or if my avg. speed is below 55mph or so. I am suspecting the p/s pump maybe? any one heard of or had this problem? Any help is greatly appreciated.

  2. Remove Advertisements

  3. #2
    awadecki is offline Cadillac Owners Enthusiast
    Automobile(s): 76 Eldo (54k), 76 Eldo (52k), 78 Eldo (9k), 85 Deville (43k)
    Join Date
    Jun 2005

    Re: 85 Seville 4.1 Knocking?

    Never heard of it, but the best way to diagnose it would simply be to remove the accessory drive belts one at a time when hot to try and isolate the problem.

  4. Remove Advertisements
    Cadillac Forums

+ Reply to Thread

Quick Reply Quick Reply

Register Now

Please enter the name by which you would like to log-in and be known on this site.

Please enter a password for your user account. Note that passwords are case-sensitive.

Please enter a valid email address for yourself.

What Cadillac(s) do you own? (Or type NONE)

Please select your insurance company (Optional)

Your date of birth and age are displayed in several places on the forum. Only the administrator will have access to your date of birth should you choose to hide it via the privacy option below.


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.


Cadillac Posting Rules

  • You may post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts