Question about 1993 Chevrolet Lumina

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What two coolant lines connect to the throttle body on a 3.1 multi port engine

What two coolant lines hook up to the throttle body on a chevy lumina 3.1 multi port ingine

Posted by daler_49 on

  • daler_49 May 24, 2009

    There are two coolant connections at the bottom of the throttle body. In fact the manual tells you to drain all the coolant prior to diconnecting the coolant lines on the throttle body. My problem is somebody else had disconnectedall the hoses and cut them off.

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Harvey N Tawatao

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There are no coolant lines connected to the throttle body, just the two fuel line. The high pressure side and low pressure side (Return line) and I believe the lines don't even connect to the throttle body on a multi port engine, the lines go to the fuel rails to the injectors.
Good luck

Posted on May 24, 2009

  • Harvey N Tawatao
    Harvey N Tawatao May 24, 2009

    There heater lines off a steel water pipe from the water pump which runs along the Valve cover. There should be two fittings off the black metal pipe, use a rubber from the throttle body to the heater pipe. The rubber hose is a rubber fuel line, so if your going to have to pick one up, that's what you use. 


    Good luck 

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MAP sensor:
jturcotte_653.jpg

purge valve:
jturcotte_654.jpg

jturcotte_2455.gif
jturcotte_2456.gif

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