Question about 1991 Pontiac Firebird

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91 3.1 V6 firebird base_Mystery Machine needs help!!!

My
As i tried to explain in my prev.question My car stalls out while on the move and it seems to always happen uphill so far i have had it at a local shop for 5 days and he cant figure out what is wrong with all his diagnostic equipment. .
The car stalls I must of course come to a complete stop to put it in park and restart it.
Yes it restarts when it does restart its not long before the car stalls out again. When i put gas on the accelerator it chuggs more and it clearly dont help me to accelerate fuel when i restart it...
The fuel block was ticking i guess searching for gas..
I have replaced the I.A.C.
The Distributor plugs and wires.
Fuel Filter.
The mechanic even installed a new ECM and some other parts that he was able to uninstall and return because it was found that these things were not the source of the issue we had been looking for..Practically replacing the fuel system fuel module and all!!
CAN YOU HELP ME OUT PLEEEEEEEAAAAAAASSSSSSEEEEEE! Why wont my car stay running without stalling and chugging out after driving around almost all day. What could it be?? Mystery machine! Hey scooby! My next move has to be a dealer Unless i can get some sound insight on the mysterious stalling machine..Good thing i have good insurance!!haha! but dang!

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  • Belinda MacDonald
    Belinda MacDonald Jun 16, 2008

    I almost forgot the oxygen sensor was replaced as well.

  • Belinda MacDonald
    Belinda MacDonald Jun 17, 2008

    And its not the Fuel Pump because the car wouldnt start and run for a second if it wasnt getting gas..everytime.

  • Belinda MacDonald
    Belinda MacDonald Jun 17, 2008

    I also replace the throttle position sensor TPS..cake but not the fix!

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I had a Ford Bronco 2 that did the same thing. It would start and run fine but it had no power to go up hill and it took for ever to get up to speed. After doing all the same things u did it ended up being a plugged catalatic converter. Maybe you have the same think?

Posted on Dec 09, 2008

Hay man my 91 did the same thing and i spent alot of money just to find out that it had a short in the wireing and would ground out up hill look in to this might be it it was over the trans were the wires had rubbed on the body good luck.....

Posted on Oct 03, 2008

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Its ur injectors these early injectors have been none to short out i would try some chevron techron injector in hopes theyre just dirty but may need to replace if u go to rockauto.com you ca get some remanufactured ones for like 35 a piece

Posted on Jun 18, 2008

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