Volvo RWD 200 Forum

INDEX FOR 10/2025(CURRENT) INDEX FOR 1/2010 200 INDEX

[<<]  [>>]


THREADED THREADED EXPANDED FLAT PRINT ALL
MESSAGES IN THIS THREAD




  REPLY TO THIS MESSAGE    PRINT   SAVE 

Hot is cold and cold is hot: a thermostat issue? 200

If my heater is being really pathetic (blows hot air on a hot day when it's set to 'cold' and cold air on a cold day when it's set to 'hot'), and my temperature gauge is always hovering at around 8:00 or less, even when it's 105 and i'm driving up a mountain, then is the main problem have to do with my thermostat? Also the heater hose on the driver side of the car is kinked due to the fact that it's a generic piece of hose stock and not an official kinked hose (thank you IPD for screwing me on that one). My car is an 1986 245.

Please let me know what you think, i'll deal with it later (procrastinators do it tomorrow!). THANK YOU ALL








  •   REPLY TO THIS MESSAGE    PRINT   SAVE 

    Hot is cold and cold is hot: a thermostat issue? 200

    I get it. You want to work on you heater now, since tommorrow ia always a day away! So is winter. Nothing like getting prepared for tommorrow.

    Sounds like you got two problems.

    A lazy thermostat (8 o'clock position) with a kinked molded curved hose. #2 maybe a possible heater valve in backwards. Working opposite to the push lever lable.

    If you have to, cut a hose that's too long. I'd advise you to just to cut it on one end and not the middle.

    Seriously. You may have a bad motor mount or a improper radiator or one that not fitting in the brackets correctly.

    I'm sure a Previous Owner was involved. He fixed it the other day. That day that finally came around for him.

    Has this car ever been wrecked at some time in the past?

    Smiles
    Phil








    •   REPLY TO THIS MESSAGE    PRINT   SAVE 

      Hot is cold and cold is hot: a thermostat issue? 200

      Some good sleuthing and 'deduction' work here, my good Sherlock, but on a few points I'm not sure I follow, and I do believe I might have misrepresented something about that heater hose. Firstly, the heater hose is hose-stock from some Auto Zone type place, NOT a Volvo-specific L-shaped hose, hence the kink, because it's crapola and isn't designed for the serpentine detouring of the dipstick. My little jab at IPD comes from a personal issue I had with them in which they insisted that their heater hoses would not be out of stock by the end of the week; however, low and behold, when I sent a friend to fetch one for me in Portland that very Friday, they were apparently all gone. But let's re-sequit, shall we? I'm not sure what the motor-mounts and radiator-sitting-level has got to do with this, but that only illustrates my ignorance of engine-cooling thermoengineering. The car HAS been in an accident, but the engine mounts look OK to me. The radiator sits OK where it is, although there is some paleolithic-level Geo-Donuts-type lashing keeping it sturdy. Your critical-thinking quizzing border on the rhetorical questions of a clairvoyant; I'm very impressed. Regardless, I'm certain that the temp gauge has been at its current position since the pre-accident era.

      And yes, there is always tomorrow








      •   REPLY TO THIS MESSAGE    PRINT   SAVE 

        Hot is cold and cold is hot: a thermostat issue? 200


        HI,

        I was, in my mind, misplaced in a couple ways!
        First I was in my joking mood. It started with the procrastination picture and the summer coming I painted.

        Second was the type hose. Consequently or apparently, the two heater hoses can not be the only hoses the driver’s side. I interpreted it as a single hose that was the problem. NOW I say OH, THAT HOSE!

        That would be the special hose. I was with you for one brief moment on those hoses. They are in a tight spot.
        Then, I read it was a piece of Generic and provide by IPD. I have dealt with IPD and RPR out of S.F. with good results on those hoses and other parts.


        I asked myself. How can this be? That was when my mind went clunk instead of click.

        In my older days you could buy straight flexible radiator hose. For trucks and tractors, etc.

        I was thinking a major misalignment. Engine and the transmission mounts can cause problems with both. In your case, the engine could be sitting back to far or leaning to the driver’s side. This explains reason for the accident question.


        Now take the Auto Zone Co. for a split second. They too rich for my blood, for their shelf items too. I go there to see if I’m getting a good deal, somewhere else.

        Now back to the heater. Since the hose is kinked, there may be air trapped in the heater core. This in itself could cause flow problems. Hot then cold yes! But not the lever position of desired control unless it is maladjusted, not closing all the way off, or in backwards.

        As far as the gauge goes, I have four cars and all the heat gauges run level at the straight across position. They may move slightly up or down the width of the needle on my older cars. The two newer cars have the (for dummies) compensation boards.

        It is my experience that you have too cold a thermostat in there or one not closing completely. The car should warm up with in a mile or so. It should be on the way up to it standard position or half way pretty darn quickly. The only way to know for sure is to measure the upper hose temperature and see if it working up to specifications.

        Don’t take those heat specifications lightly because they affect the gas mileage and life of the engine. Since you have been looking, you know that.

        Past that you have suspect a bad wire (corroded) to the sender. There is a sender and gage voltage stabilizer relationship too. All these, factor into why they seldom put degrees on the gauges themselves. These gauges are for an approximate reference and can be made cheaper that way. There is less responsibility back to a manufacturer without exactness.

        These instruments are made by man and can be applied to humans in general. You got to define what NORMAL IS between the limits.
        We are made so cheaply, there’s no warranty from the manufacture either?

        Thanks for your kind thoughts. I’ll have to keep having fun on the board and practice more though. As you can tell we all try not, or try to have our moments with zingers!

        Phil








      •   REPLY TO THIS MESSAGE    PRINT   SAVE 

        Hot is cold and cold is hot: a thermostat issue? 200

        my 86 244 had the same thing with the thermostat sitting at 8. I read at one point that the connection behind the instrument panel could need the little inserts realigned so the contact was better. Same thing was happening before and after I jumped the temp compensation board. I never tried fixing the problem before I had to park the car.








        •   REPLY TO THIS MESSAGE    PRINT   SAVE 

          Hot is cold and cold is hot: a thermostat issue? 200

          Transit Wind: very interesting info. This will be noted as per procrastination-stated.

          Phil - a fantastic response. Everything i hoped to hear. This does have me worried due to the said damage occurring to engine if it is indeed a thermostat issue (and it's been this way for quite some time, at least the last 18,000 miles I believe). Will make further threads on the subject as issues are dealt with in the far off distant 'tomorrow.' Thanks for checking this one out :)







<< < > >>



©Jarrod Stenberg 1997-2022. All material except where indicated.


All participants agree to these terms.

Brickboard.com is not affiliated with nor sponsored by AB Volvo, Volvo Car Corporation, Volvo Cars of North America, Inc. or Ford Motor Company. Brickboard.com is a Volvo owner/enthusiast site, similar to a club, and does not intend to pose as an official Volvo site. The official Volvo site can be found here.