Question about 1994 Chevrolet S-10 Blazer

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94 s-10 blazer lost power and brakes

I have a 94 s10 cpi and have changed everything i can think of to try to fix the lost power and hard pedal. It will take gas as long as it is in park and idles roughly, and when you put it in gear it will quit when you give it gas or if it will go you can have the pedal to the floor and it won't go over around 15 mph. I've checked the vacuum lines and replaced all the sensors and filters. No codes come up when we've checked. I read on another post that the problem would be the ecm plugin corroded? Is this a problem that this model has? Also, is there a way to get to the computer without taking most of the dash apart?

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  • coolbreze15 Jan 19, 2009

    Yes, black smoke does come out of the exhaust and it is a vortec. We've already replaced the EGR valve also.

  • coolbreze15 Jan 21, 2009

    The intake has already been checked and the spider has been replaced. Too much gas was an issue but after the injection replacement the pressure and everything was fine. I had also replaced the fuel pump before these problems started so it has a new pump and it works the way it should. Overall, everything in the fuel system, vac lines, and transmission has been checked.

  • coolbreze15 Jan 23, 2009

    Yep, all sensors and filters have been checked and replaced.

  • JBlazer Mar 10, 2009

    Mine idles rough as well, and blows black smoke from the tailpipe when the RPM's get up to about 6,500. It won't smog like this will it? Also, my "Anti-Lock" light is on... is that light okay to be on when they smog it, or do they not smog if ANY lights are on? Thanks!

  • Phillip Ridener
    Phillip Ridener May 11, 2010

    Does it blow black smoke out of the exhaust? And is it a W engine code? That is the 8th digit on your VIN code. That means it's a vortec.



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Sounds like your problem is your injector there is a cap on your upper intake that comes off pull it off take a flash lightlook down into the intake if it's got gas in it thats your problem. good luck Phil.

Posted on Jan 19, 2009

  • Phillip Ridener
    Phillip Ridener Jan 21, 2009

    That all said, if all the new parts are working the way they should, ck your computer. A lot of GM cars have computer problems that are misdiagnosed. - people spend a lot of money changing parts - Good luck.

  • Phillip Ridener
    Phillip Ridener Jan 22, 2009

    have you checked your map sensor it could cause this problem also. good luck.



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No brake!

also check the brake booster usually when it goes bad the pedal goes to the floor causing no brakes.....try replacing that.....also a vacuum leak could cause that....are you loosing brake fluid at all besides when you bleed the brakes? let me know

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