Heater doesn't work till I drive.
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Cadillac Catera and Cimarron Forum Discussion, Heater doesn't work till I drive. in Past Cadillac Vehicle Discussion; I took my 98 Catera into the shop to have the heater fixed (heat on the driver side and cold ...
  1. #1
    nutcasevi is offline Cadillac Owners Member
    Automobile(s): Cadillac
    Join Date
    Dec 2006
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    17

    Heater doesn't work till I drive.

    I took my 98 Catera into the shop to have the heater fixed (heat on the driver side and cold on the pass. side). They didn't have the "parts" so I had to wait. After they did get the parts they ordered the wrong ones. After a few more trips I decided not to let them work on it anymore. So now my problem is that the heater doesn't work at all until I drive the car about 15 feet. Then the blower kicks on. It doesn't matter if the car is warmed up or not. Anybody have any ideas why its doing that?

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  3. #2
    AwfulSmokey is offline Cadillac Owners Fanatic
    Automobile(s): 99 Catera
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    May 2006
    Location
    Ft Myers, Florida
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    157

    Re: Heater doesn't work till I drive.

    i seen someone post the same problem. I thought maybe it was low on coolant, but now i'm thinking that maybe the thermostat is sticking. As they get older and rusty, they have probs opening and closing and sometimes stick either way.

  4. #3
    landscaperluke is offline Cadillac Owners Member
    Automobile(s): 94 STS
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    Jul 2005
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    Crandon, WI U.S.A.
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    33
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    21

    Re: Heater doesn't work till I drive.

    It is possible that it is the motor itself. My 91 had a blower motor issue. It would not work all the time. Intermittently would go on then shut off. I would tap on the motor and it would run fine till next time I drove it. Turned out the blower motor was going.

  5. #4
    nutcasevi is offline Cadillac Owners Member
    Automobile(s): Cadillac
    Join Date
    Dec 2006
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    Thread Starter

    Re: Heater doesn't work till I drive.

    I've also noticed that the rear defroster doesn't work until I drive alittle bit also. I hit the button to turn it on and nothing happens. As soon as I drive alittle it works fine.

  6. #5
    Resilient is offline Cadillac Owners Fanatic
    Automobile(s): Catera 98
    Join Date
    Aug 2005
    Location
    Ottawa, Canada
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    46
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    418

    Re: Heater doesn't work till I drive.

    Quote Originally Posted by AwfulSmokey View Post
    i seen someone post the same problem. I thought maybe it was low on coolant, but now i'm thinking that maybe the thermostat is sticking. As they get older and rusty, they have probs opening and closing and sometimes stick either way.
    I just went through this... stuck open T-Stat, replaced it, then they discovered my rad was cracked, replaced it... anyway... now engine temp is good (it was barely ever getting to 1/4 gauge)... but heat is still low...

    Is blower motor hard to replace? DIY type job ?

  7. #6
    AllenPacla is offline Cadillac Owners Fanatic
    Join Date
    Nov 2004
    Location
    New York
    Posts
    447

    Re: Heater doesn't work till I drive.

    Regarding the heat on driver side and cold on passenger side, do a search, there is a fix for that. I fixed mine myself, and I had to do some modification on how the actuator is laid in its proper place. There is a big design flaw which makes the actuator slide thus making the gear slip big time creating the noise you hear when you are changing the temp setting. It's hard to explain, but the idea is to get the gear to bite so you would be able to adjust the temp on the passenger side.

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