1988 325 Mystery Hose

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • pnw_bmw_325
    Noobie
    • Jun 2026
    • 10

    #1

    1988 325 Mystery Hose

    Click image for larger version

Name:	IMG_9007 copy 2.jpg
Views:	21
Size:	236.6 KB
ID:	10164508 Click image for larger version

Name:	IMG_9008 copy.jpg
Views:	21
Size:	210.2 KB
ID:	10164509

    1988 325 "super eta" - I can see an unattached 5/8" hose that is disconnected. It is at the back of the engine bay on the drivers side. Close to the engine block and near the heater core hoses. But other end seems to feed into the firewall near where the starter is. There is a loose hose clamp that has slid down it and was clearly attached to the loose end. But I cannot find where this should go. Nothing leaking out of it, and there does seem to be some dried up, yellowish gunk in it. Any ideas?
  • 82eye
    R3VLimited
    • Jan 2009
    • 2038

    #2
    do you have the aux thermostat set up ? it may have been bypassed with most of the mess of hoses it requires left in place.

    Comment

    • pnw_bmw_325
      Noobie
      • Jun 2026
      • 10

      #3
      I do not appear to have the recall added thermostat setup. This issue has me learning about that. There seems to be a good chance it is related to that. I'm just not sure where the other end of it is going to, unless that end isn't hooked up either. I've got some hose chasing to do ...

      Comment

      • 2mAn
        Señior Mod
        • Aug 2010
        • 20803

        #4
        My first thought was the throttle body cooling lines
        Simon
        Current Cars:
        -1966 Lotus Elan
        -1986 German Car
        -2006 Volkswagen Jetta TDI

        Make R3V Great Again -2020

        Comment

        • 82eye
          R3VLimited
          • Jan 2009
          • 2038

          #5
          Originally posted by pnw_bmw_325
          I do not appear to have the recall added thermostat setup. This issue has me learning about that. There seems to be a good chance it is related to that. I'm just not sure where the other end of it is going to, unless that end isn't hooked up either. I've got some hose chasing to do ...
          it was clamped at that end, there really is nothing else that would need one there.

          Comment

          • 82eye
            R3VLimited
            • Jan 2009
            • 2038

            #6
            Originally posted by 2mAn
            My first thought was the throttle body cooling lines
            they are heater lines not cooling lines.

            Comment

            • pnw_bmw_325
              Noobie
              • Jun 2026
              • 10

              #7
              82eye is correct. I do have the extra recall thermostat after all. But the bypass is not connected to the return line. The jumble of hoses really is crammed in there! So I now I have to decide if I leave it as is, properly tee into the return line, or properly revert back to pre-recall configuration…

              Comment

              • 82eye
                R3VLimited
                • Jan 2009
                • 2038

                #8
                Originally posted by pnw_bmw_325
                82eye is correct. I do have the extra recall thermostat after all. But the bypass is not connected to the return line. The jumble of hoses really is crammed in there! So I now I have to decide if I leave it as is, properly tee into the return line, or properly revert back to pre-recall configuration…
                aw crap. it isn't too terribly hard to delete with some patience. i ditched mine. it's actually reverting back to what most e30 hose diagrams are.

                edit: you might need to buy a hose. the early aux therms were dealer install, the original hoses were cut from a standard set by hand to do it.
                Last edited by 82eye; Yesterday, 07:36 AM.

                Comment

                Working...