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psalm10720's avatar
psalm10720
Explorer
May 31, 2018

Throttle Body Confusion

I had posted a post regarding a carburetor issue I was having with my Brave "falling on it's face" after warm-up. I'm not a mechanic and yield to the experts. The term Carburetor was used to me by professionals and so looking at the unit and listening to local professionals I had it in my mind that the unit was a carburetor but I was wrong. It is a throttle body injector that looks like a carburetor. I sent it to a speed shop and spent a huge amount of money and they got a Holly Unit tried to make it work then found out from Holly that unit would not work. They did some other stuff which has helped but I found a carburetor shop in my area that has a good reputation so I will send it to them when I can. I really believed in my mind based on the looks of the unit and what I was told by other professionals that it was a carburetor but they and I were wrong... Sorry.
Class A
  • enblethen's avatar
    enblethen
    Nomad
    May 31, 2018
    Here is link to the original post.Previous post
    Many carb shops have difficulty working on TBI units.
    Suggest you go back through your previous post for better idea.
    Still sounds like the IAC is clogged or not working.
    Maybe rather then throwing more money get a replacement from a place like Rock Auto or O'Reilly auto parts.
  • RLS7201's avatar
    RLS7201
    Explorer II
    May 31, 2018
    1993 P32 chassis is throttle body injected. There are two injectors mounted on the throttle body. I believe your 'Professionals" are "want to bes" and are still amateurs.


    Richard
  • jyrostng's avatar
    jyrostng
    Explorer
    May 31, 2018
    Check that fuel pump inside the tank, the hose inside the tank splits.
  • psalm10720's avatar
    psalm10720
    Explorer
    May 31, 2018
    It’s a P30 chasis not P32. I only come in a short time each month. Situation is ok. Will post if I need assistance. Case closed.
  • wa8yxm's avatar
    wa8yxm
    Explorer III
    May 31, 2018
    I am reminded of my first Towed car. back before it became a towed car. Oh it was a 1992 Chevy and TBI.

    But I had a problem with excessive brake pedal travel. The dealer acknowledged the problem but could not figure it out. They tried like 3 times and still made only a minor improvement.

    Finally I took a stab at figuring it out
    Sitting at my desk at work a good hundred yards or more from the car.

    Next day I drove it to my Tire guy, gave them a SPECIFIC instruction
    Drove out they were like new. (Well they were new at least the parts that were out of spec which I told him to inspect).

    And the dealer's man is supposed to be FACTORY TRAINED!!!!!!.

    (I"m self trained).
  • udidwht's avatar
    udidwht
    Explorer
    May 31, 2018
    Are you able to start it?

    If so...does it die afterwards?

    If so pull the EGR and plug the openings with a coke can cut to fit and reinstall the EGR to test. How does it run now?

    If it runs good replace the EGR valve.
  • enblethen's avatar
    enblethen
    Nomad
    Jun 01, 2018
    P-30 is a series of GM chassis. The following numeral tells what the exact chassis is. Mine for example is a P-37 chassis.
  • psalm10720's avatar
    psalm10720
    Explorer
    Jun 01, 2018
    I only posted this as an update. I have a plan. I know what the problem is am and dealing with it. Thanks. You

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