Jump to content
CaddyInfo Cadillac Forum

Recommended Posts

Right at the '93-94 era....the powertrain codes changed from EO to PO.

So....if I am looking at the service manual correctly. A EO27 is 'open throttle position switch.'

Link to comment
Share on other sites

With the engine at idle, press on the ISC plunger till it retracts.

When it bottoms out, unplug it.

Now adjust it to a .060 gap and then plug it back in.
If it is also surging, that is indicative of a vacuum leak somewhere.

Posted Image
Link to comment
Share on other sites

  • 2 weeks later...

TSB on that, if its a flat TPS on the backside its been replaced by an update with a indent on the back body of the TPS. TPS min air rate and extended ISC and an idle learn .

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Recently Browsing   0 members

    • No registered users viewing this page.
  • Create New...