Question about 1989 Chevrolet K1500

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91 chev 305 Motor starts then dies ,replaced the fuel pump all lines fuel filter fuel regulator new coil and coil wire took the catalytic converter out replaced it with a straight pipe

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  • Kenneth Hassett Mar 12, 2009

    Did you read what I posted?

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Check out the motor.and check out if your getting spoark at ignition switch properly and the coil wire seems to be hot or cold.if cold then its probably not getting required spark to start.spark plug needs replacing

Posted on Mar 12, 2009

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Have you checked the TPS? This could definitely be the problem. Also have you made sure you have spark? Do you know for sure your getting fuel pressure? The TPS can be checked with a multimeter. When you say it starts then dies, how long does it run for before it dies? Once I have more information I can assist you further. Also please take a moment to accept and rate my solution accordingly.
Thank you,
Lee

Posted on Mar 12, 2009

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Double check that coil and make sure you don't have any air in those newly replaced fuel lines. trapped air can do this.

Posted on Mar 12, 2009

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This could be the starter motor is faulty. you may lightly tap the starter motor with a block of wood WHILE someone is holding the key in the START position. If you have a bad starter this will sometimes make it work. Make SURE you have the car in park and the emergency brake on.

Posted on Mar 12, 2009

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Hi..the problem could be due to idle speed control
motor.check this out immediately.
thank u..

Posted on Mar 12, 2009

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Hi, See if I can help you fix it.

Really need more info but start here.

Is choke opening & closing freely?

If it is a carburetor is there fuel going down bore?

Comment back when you check these out. & I will give you a few more options.

Posted on Mar 12, 2009

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First, have you checked fuel pressure AND volume? I see you didn't change the fuel pump or regulator, so those are still suspect. 

You need to determine whether you're losing spark or fuel. Remove the hose from the air cleaner (at the air cleaner end, not the engine) and while the engine is running (but begins to die) and spray some carburetor cleaner into it....if the engine keeps running then you're starving for fuel. 

If the above makes no difference (check a couple of times before moving on) then you are losing spark. This is where it gets sticky as it can be any number of things. If you have the original ignition module or pickup (in the distributor) those may have failed. You could also be suffering for something as simple as a bad wiring connection or bad ignition switch (not the key, the switch...this is along the side of the steering column). You could even have a bad ECU (computer). Bottom line is that it's easy to just throw parts at something until you finally find the culprit, the hard part is diagnosing, something most people don't want to pay for. The irony is that the cost of diagnosis more than pays for itself in the money you'd otherwise waste on unneeded parts. 

Posted on Mar 12, 2009

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Hi

are you sure the coil is replaced?

Posted on Mar 12, 2009

  • carlos fernandez Jr.
    carlos fernandez Jr. Mar 12, 2009

    please check the electrical wiring maybe you have electrical shorted, or poor spark gap..



    Thanks!

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