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Can you replace thermo-time-switch without removing intake manifold & injector hoses? 200 1979

posted by  sutherml on  Wed Jan 13 01:32 CST 2010
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last visit: Sat Jun 29 19:15 CST 2013
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Is there some easy way to getting to the thermo-time-switch (TTS) (which is "hidden" under intake #4) like maybe unscrewing some panel in the firewall or access from underneath the vehicle?

I would prefer to quickly drop out the starter motor to get access (if that gives access?) than remove the intake manifold which also requires removing injectors and injector hoses since they prevent manifold removal. Manifold removal also requires strong flexing of old (hardened?) hi-pressure injector hose risking kinking when pulling out the attached injectors.

Also, if I can get access to the TTS with the manifold still in place, is the manifold so close to the TTS that it prevents getting a socket or ring spanner onto the TTS?








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    Can you replace thermo-time-switch without removing intake manifold & injector hoses? 200 1979

    uid 18083's pic
    posted by  lucid on  Wed Jan 13 04:31 CST 2010
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    last visit: Fri Oct 24 12:31 CST 2014
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    Are you sure it's bad?

    Does it even get cold enough in Australia to require the extra fuel from the Cold Start valve/injector?

    --
    Bruce Young, '93 940-NA (current), 240s (one V8), 140s, 122s, since '63.








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    Can you replace thermo-time-switch without removing intake manifold & injector hoses? 200 1979

    uid 27's pic
    posted by  Art Benstein on  Wed Jan 13 04:25 CST 2010
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    last visit: Fri Oct 17 20:10 CST 2014
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    Looks really hard to me.

    I did meet someone who wired a push button inside the car for a cold-start spritz, though I don't recall if his TTS was to blame. He just liked having more control of things.


    --
    Art Benstein near Baltimore

    Men are like Parking Spots All the good ones are taken, the rest are handicapped.








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    Can you replace thermo-time-switch without removing intake manifold & injector hoses? 200 1979

    posted by  rhaire on  Wed Jan 13 04:12 CST 2010
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    last visit: Mon Aug 4 10:16 CST 2014
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    Common problem is a broken harness connector on the TTS. You *might* be able to reconnect, but even that would be tricky. Pulling the manifold back 4 inches is not a big deal as I recall.








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    Can you replace thermo-time-switch without removing intake manifold & injector hoses? 200 1979

    posted by  Farm Boy on  Wed Jan 13 02:29 CST 2010
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    last visit: Mon Oct 28 07:35 CST 2013
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    I know that I cannot on my California '91 because the EGR valve is in the way.

    However, removing the intake manifold is easier than some of the other options you mention. I have had to replace the intake manifold gasket a couple of times in the 20 yrs/300k miles I have owned the car.

    A few years ago I got the classic #3 cylinder passenger side head gasket leak, so I pulled off the head and cleaned everything up. I took that opportunity to replace the temperature sensors and the heater hoses.







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