Question about 1996 Chevrolet K1500

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Took my truck to AutoZone, got a 0300 code, now truck dead, what to do?

My husband has a '96 chevy 1500 2wd. We bought it with 98,000 miles on it. In the last 2000 miles we have put in a new alternator, fuel pump with sending unit, fuel relay, and did a full tune-up ( plugs, rotor, distributor cap, etc.). The check engine light turned off, and then turned back on 2 days later. Last night after about a 45 minute trip with about 1500 pounds in the 8ft bed, plus all of my husband's tools, it's a utility body, it wouldn't run above 55 mph, and then after about 1 mile, died. We thought the gas gage might be wrong and put in 5 gallons of gas. It started up, drove 1-2 miles and then died again. It will start if you spray it with starter fluid, but only for a second. It emits a grey smoke from the tailpipe when you start it with starter fluid, and we tried putting the stuff that gets water out of the tank in and then starting it, but that didn't help either. What could be the problem?

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  • rdcjb2 Jun 09, 2008

    The fuel pump burned out again!

  • clapine Jul 18, 2008

    try the wiring harness to the fuel pump

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Ok PO 300 is A RANDOM MISFIRE meaning that mre than one (1) cylinder is misfiring and the computer cannot tell which ones. Ok having said that I used to own Ace Automotive in Lakewood Washington for 14 years i specialized in Diagnostics and Emissions. I Cured so many PO300 codes with the one thing that everyone overlooks. The fuel injectors, they are either shorted in which case you need to replace them, or in most cases dirty and mo amount of in the tank cleaners can do it. you need to have them professinally cleaned where the fuell pump is disabled and the truck is actually running on the chemical cleaner. We used to use BG products best stuff I ever seen brought many a car back to life I have used and seen the MOTOR VAC system a cannot say it compares to the BG system. Someone will need to determin if any injectors are shorted or dead and replace them and if thats the case just take em all out and have them ultrasonically cleaned they will give you a before flow report and an after cleaning report.
If this information is helpfl please give a good rating and by all means please visit my website and check out the BLOG AND FAQ read all the fuel injector problems .
Thanak you Randy
www.aceautomotive1.com

Posted on Aug 17, 2008

  • Randy Harkins
    Randy Harkins Aug 25, 2008

    have you had a chance to read my post I beliee it will help you.

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I wouldn't use too much of that starting fluid it's not good for the engine. Your problem sounds like you have a restricted fuel filter, start there and replace the filter, (cheap fix). The filter should be on the frame just foward of the rear wheels, hope this helps.

Posted on Jun 06, 2008

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