Question about 2002 Chevrolet TrailBlazer

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My 02 started acting up about 3 weeks ago , when it didn't start when I turned the key, It made a strange sound like a wine and the light went out, I tried again and it started. I knew something was coming up so I only drove it local, fearing it would take a **** far from home. The other day my son went to move it and sure enough DOA again, not starting and strange sounds, negative side of the bat getting hot. I think its the starter but I have never had a car act like this one is. I have quite a bit of auto tinkering but this one has a lot more electronics then I am accustom to. Am I on the right track or has some electronic thing taken a ****. Please help thanks

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  • ricklx2 Sep 14, 2009

    The sound that I am hearing is not the starter spinning. it's the electrical system shutting down as if it is on over load or cutting out for it's own protection. The starter never gets a chance to spin. I took the starter out yesterday and had it tested it was pulling about 140 amps to start, i'm sure that is way high, it also sounded like the bearings are shot. So I think the starter is ouer loading the electrial system causing it to shut down, Yes/no,maybe ???



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I would suggest taking the vehicle in to AutoZone or similar parts store where you can have the alternator and battery LOAD tested.
A bad cell in the battery would cause this, and also eventually ruin the battery (if it hasnt already).

The whine could also be (as you stated) the starter spinning but not getting kicked out by the solenoid to engage the flywheel.

The Starter relay, or the starter solenoid may be bad. You will need to check each to determine the failure.

I would bet on the solenoid first - as you are hearing the starter spin (most likely)

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Posted on Sep 13, 2009

  • blueextc3221
    blueextc3221 Sep 14, 2009

    A good starter will normally draw 60 to 150 amps with no load on it, and up to 250 amps under load (while cranking the engine). The no-load amp draw will vary depending on the type of starter. If the amp draw is too high, the starter needs to be replaced. The same is true if the starter does not achieve the specified rpm.

    The WIRING may be suspect - with a loose terminal, wear spot, or copper to metal along the line somewhere. Give it a good inspection.

    The system may shut down with current overdraw. Have it checked out.




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