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#16
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Re: Engine Won't Start...STRANDED...need help
well it turns out after all that trouble the stupid shifter was the whole problem. I was so frustrated and then i couldn't get the shifter to move back when the key was in the start position so i finally got pissed of and jamed it back and then tried to get it working correctly but that didn't work so just hoping that it might turn it over it fired right up and then I realized the stupid shifter wasn't engaging in park therefore it wasn't turning over. so i fixed and now it works fine
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#17
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Have someone run the ignition switch for you.
Take a voltage meter and put the negative lead on the block ground (pretty much anywhere you can get a clean piece of metal) and the positive lead on the heavy gauge wire (+12V) at the starter itself (B+ terminal). You should see +12V (more like +13.8V) there when the ignition switch is not active. Have someone turn the key for you. The voltage there should drop a little, to around no less than 9.5V or so. If it drops at all, that means the solenoid is pushing the contacts for the starter motor and the motor windings are connected. If this is the case and the starter still doesn't work, either it is installed incorrectly or the motor is bound up. If the +12V does not move at all when you hear the solenoid click, then the contacts for the starter motor, that the solenoid activates, are probably no good, or the motor itself is burnt out. There is a chart in the shop manual, page 8A-30-4, that is labeled "Starter Solenoid Clicks; Engine Does Not Crank or Cranks Slowly" Here are the basic steps the chart reads out, but it sounds like you have heard a lot of this. First, make sure the battery is OK. Have someone help you and measure the battery voltage at the battery, then the front junction box (engine compartment- passenger side front). According to the book, the voltage needs to stay above 9.5V when attempting to crack, at all measure points. If it doesn't, check for bad connections in the +12V and GND lines. If the battery voltage stays above 9.5V, then measure between the GND connection of the block to the chassis (passenger side - engine front) to the battery GND terminal. This will take some long wires, but since measurng volts takes no current in the wires, it won't affect the reading. The difference between the GND at the engine and the GND at the battery needs to be less than 0.5V. If it is more than 0.5V, then check the GND cables for a problem. Once they are OK, proceed. Do the same type of measurement, but between the underhood junction box +12V and the starter solenoid B+ terminal. Have someone attempt to crank for 15-seconds. This voltage needs to be less than 0.5V. Again, if it is too high, then check the cables and connections involved. Basically, think about where all the high current is going to flow when the starter motor is put into the circuit and look for voltage drops that are too high. The amount of current involved is a lot, and there will always be voltage drop through the wires due to their resistance, but the connections at these locations listed are the primary spots that can effect the voltage drop a lot. The solenoid itself can work with lower than 9.5V, but the starter motor very often will not turn at all at or below 9.5V. I hope this helps... GuMan |
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