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The dealership put a new computer in the engine of my 2001 Maxima, and it still doesn't start. They can't figure it out. A friend said to bring it to a high performance place with better equipment?

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  • Cars & Trucks Master
  • 923 Answers

Since the NEW computer changed NOTHING, demand that they PUT THE OLD COMPUTER BACK IN, AT NO CHARGE! Then take it somewhere where they KNOW what they are doing!

Posted on May 11, 2017

  • 22 more comments 
  • Cathy Ziegler
    Cathy Ziegler May 11, 2017

    I took it back and they put in a second new computer... still won't work. They suggested I sell the car for scrap (after putting in close to $12K in repairs). What I need to know is WHERE to take it now.

  • solver2010 May 11, 2017

    That depends on WHERE you are! Do you have a repair center in your area called "The Answer"?

  • solver2010 May 11, 2017

    Diagnostic computers have been standard in vehicles sold in America since 1997. Do you have a check engine light illuminated on the dash?

  • Cathy Ziegler
    Cathy Ziegler May 11, 2017

    No, the check engine light wasn't on. I'm in Dallas, TX.

  • solver2010 May 11, 2017

    Do you EVER see the check engine light on, such as when you first turn the key? If not, the light may be defective, or may have been REMOVED to hide problems!

  • Cathy Ziegler
    Cathy Ziegler May 11, 2017

    It's a big mystery to the so-called experts, so where in the Dallas area is someone more expert than the experts at the Nissan dealership... where they won't fix it again even though it's under warranty bc they don't know how.

  • solver2010 May 11, 2017

    In algebra, X is an unknown. A spurt (spert?) is a drip under pressure. Therefore, using pure logic, an EXPERT is an unknown drip under pressure! Unknown drips should NOT be trying to do vehicle repairs!

    Automotive engineering is pure science. You have fuel (under pressure), you have fuel INJECTORS that deliver that fuel into the cylinders, you have pistons that compress the mixture, you have ignition that ignites the fuel, the expanding gases push the pistons away, which rotates the engine, and camshaft(s) that open and close the valves, to let the pistons suck in air, and push out exhaust. It's really quite simple! What is missing? Something is missing, or out of time! Does the engine have any spark? Is there any fuel pressure, and is the fuel BURNABLE? Are the timing belt(s) (or timing chain(s) broken or defective?

  • Cathy Ziegler
    Cathy Ziegler May 11, 2017

    To be honest, I don't remember about the check engine light, but I don't think this was an issue. Many people have checked out the car and no one ever said, oh the light doesn't come on. The battery is dead now or I'd check.

  • Cathy Ziegler
    Cathy Ziegler May 11, 2017

    I know they charged me a ton to fix everything they COULD think of so... let's assume that everything BUT the computer is working. They can't figure out the problem.

  • solver2010 May 11, 2017

    Do you have the car at home, and do you have another vehicle and jumper cables, or do you have an automotive battery charger?

  • Cathy Ziegler
    Cathy Ziegler May 11, 2017

    I can get it jump started, yes.

  • Cathy Ziegler
    Cathy Ziegler May 11, 2017

    If I recall correctly, the car would turn on... just not start. (I'm revisiting this money pit after it has been an expensive paper weight in my yard for a good while.)

  • solver2010 May 11, 2017

    Okay, now you have me confused! Do you mean to say the car RUNS if you jump start it?

  • Cathy Ziegler
    Cathy Ziegler May 11, 2017

    No.

  • Cathy Ziegler
    Cathy Ziegler May 11, 2017

    With the battery charged, I could listen to the radio, use the lights, etc. ... but the car isn't going anywhere.

  • Cathy Ziegler
    Cathy Ziegler May 11, 2017

    Also, I replaced all the fuses, so that isn't it either. I'm told its something inside the computer itself that's messing things up, but a new computer didn't fix it.

  • Cathy Ziegler
    Cathy Ziegler May 11, 2017

    "Vehicle has no spark, cam and crank sensors are good. Coil plugs have power, and we have fuel. Narrowed things down to ECU or bad key."

  • solver2010 May 11, 2017

    Okay, do a test ... next time you have enough battery power! Turn the key to the ON (run) position, and IMMEDIATELY listen for about a one second hum from the fuel tank in the rear. That is SUPPOSED to pressurize the fuel to the fuel rails on the engine. Do you HEAR that short noise? It's fairly quiet, and the timing is short! Have you ever heard of starting fluid? NEVER over-use starting fluid, or you could cause mechanical damage to the engine! But a two second spray into the air intake, immediately followed by cranking the engine will START the engine, as long as the pistons and valves are all present, working, and in proper timing! Alternatively, using an old trigger sprayer, you COULD spray ordinary gasoline into the air intake (BUT NOT into a paper air filter), and likewise, the engine will probably start ... confirming that the problem is in the fuel system!

  • Cathy Ziegler
    Cathy Ziegler May 11, 2017

    Apparently 2001 engine was different from the ones before 2001 and those after 2001, so the younger mechanics don't know how to deal with that one year's engine?? I don't know who does know, so that's really my question. Where do I take it now, where they'll know?

  • Cathy Ziegler
    Cathy Ziegler May 11, 2017

    Thanks for your help. I appreciate your interest and advice.

  • solver2010 May 11, 2017

    Happy to help! I met the girl I married 37 years ago, to whom I'm still married, in a similar scenario. Some dingbat had dropped a wing nut down her carburetor, and it ended up poking a hole through a cylinder wall! Her 3 brothers were trying to figure out what happened for a few hours. I knew what had happened in less than 10 minutes, and said I would fix it. And that's exactly what I did, with a welded-in cylinder sleeve, a new piston, and a top and bottom total rebuild. That took a few days!

  • solver2010 May 11, 2017

    Here are a few suggestions for local repair!
    https://www.google.com/?gws_rd=ssl#q=bes...

  • Cathy Ziegler
    Cathy Ziegler May 17, 2017

    They're saying a wiring harness is needed, for $1800, and that MIGHT work.

  • solver2010 Jun 08, 2017

    Yes, and if you buy ONE Mega-Millions lottery ticket, you also MIGHT win the grand prize! NEVER fall for such a scam, as "replace" such and such, and it MIGHT fix it, because the chances lie between EXTREMELY SLIM and NONE, that whatever they are GUESSING is the problem ... WON'T fix it at all!

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