Question about 1999 Chevrolet Blazer

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The truck won't start, Fuel pump is a year old, just changed out heat sensor, just changed spark plugs- truck will start when chemical is sprayed into carb looking thing. Also will start when truck is warm.

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  • jillmbrooks5 Jul 17, 2008

    After using the chemical (by taking off the plastic thing on the top on the engine and spraying it into the butterfly thing) I was able to drive it all day yesterday and it ran like a champ. As long as I started it every few hours- each time it started right up- only one turn of the key. I had some one tell me that there is some "spider thing" when it comes to the injection and that one "leg" controls it all and that is what is bad. Sorry that I am unable to actually name the parts and all. What do you think of this potential solution?

  • warren learn Dec 21, 2008

    I have the same problem.....changed the FPR and no change.....wont start when cold......put a little fuel in throttle body and it starts right up and runs.....has new fuel pump 61 psi......runs great once it starts.....no problems rest of day after first initial start

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Fuel pump replaced, crank sensor replaced, coil, wires and plugs all replaced, now truck acts like it's flooding out and won't continue to run.. problem started with truck shutting itself off while driving. you could let it sit and cool off and it would restart but only for a few minutes..

Posted on Jul 27, 2008

  • grma08 Jul 28, 2008

    we figured out what it was... the cadilac converter

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Check that the Idle air controller is not faulty, disconnect it and start the truck again, if the truck starts (running poorly) then replace the IAC.

Posted on Jul 16, 2008

  • Jerry Wintrode Jul 18, 2008

    That would make since if you are talking about a Vortec Sequential fuel injection engine. But the symptoms are usually a little different:

    Truck starts fine when cold but hard starting, or won't start at all when at operating temp. Hard starting was caused by a leaking fuel pressure reg. On 98-01 Sequential fuel injection Vortec engines the spider assembly and FPR are located under the upper intake manifold. once the FPR starts leaking, the fuel collects in the intake manifold and sits there flooding the engine. If the truck sits long enough the fuel will evaporate and the engine will fire. The fix is to purchase the upgraded Spider assembly for SFI vortecs, this upgrade does away with the poppet style injectors and replaces them with real injectors and is complete including the FPR and is a direct bolt-in.


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1 Answer

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also check battery voltage, if battery more than three years old then it is suspect...get someone to give you a jump.

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