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Lower Rad hose

Discussion in 'General Tech and Maintenance' started by Jazzy19, Apr 7, 2004.

  1. Jazzy19

    Jazzy19 Senior Member

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    hey guys, Quick question..... B18b in a 93 SI...I changed my thermostat cuz the temp was going over half way mark and was heating up....Now my question is that the lower rad hose connects to the thermostat, if the lower rad hose is not hot after a 1 hour drive does this mean my thermostat is faulty??? The upper rad hose is hot as a biatch...The temp is still going up, and i took all the air out of the system already!!!

    thanks guys!!!!
     
  2. asmallsol

    asmallsol Super Moderator

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    Replace your thermostat. It is fairly easy to do. I recomend an OEM honda one. I bought a murrays POS one, and the quality was just not there. They cost a little more, but well worth it.

    Anyways, you just have to pull the hole, and with extensions, take the two bolts holding the thermostat housing on. If you cant get at the lower/rear bolt, you may find it easier to just unbolt the stater. Then, pry on the thermostat (not on the actual block) and then replace. Make sure you put it in the right way and you line up the two little notches on the gasket to the block (you will see when you do it). Then reinstall everything, then take the cap off the raditor, fill, turn the car on, and keep adding until the lower raditor hose turns hot.

    On honda's a thermostat will normally open within 10-15 minutes of just sitting, and maybe a little less when just driving around. If it does not open, then it needs to be replaced.
     
  3. Jazzy19

    Jazzy19 Senior Member

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    i did that already..... I was wondering if the lower rad hose should get HOT....I drove for 1 hr on the highway and still nothing.....I changed the thermostat wit a cheapy one i got from canadian tire :( But the lower rad hose SHOULD GET HOT IF THE THERMOSTAT IS WORKING RIGHT!!!!!
     
  4. brian11to1

    brian11to1 Senior Member

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    Maybe the thermostat isnt any good. BUY A NEW ONE.
     
  5. Jazzy19

    Jazzy19 Senior Member

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    so the lower rad hose SHOULD BE HOT????
     
  6. GSRTURBO

    GSRTURBO Member

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    the lower rad hose should get hot after your engine reaches operating temp and the fan comes on.
     
  7. brc80

    brc80 Senior Member

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    My upper hose is always hotter then my lower hose. Is the right? Sorry for the thread jacking.
     
  8. Import Builders

    Import Builders Senior Member

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    its fine,a s long as they are both HOT.

    if one is HOT and the other one NOT, you got problems.

    Jeff
     
  9. HatchSpeeD

    HatchSpeeD ...Hi...

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    If the lower never gets hot, does that generally signify water pump?

    Don't mean to thread jack but got the same problem with my engine i'm taking out.
     
  10. spaceman

    spaceman Member

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    the upper hose should be hot and the lower hose cool...thats how it should be
     
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