Starter fuse

[Mts1977]

2005 grand am blows the starter fuse (fuse #54) Everytime I run key to crank position, can anybody help me out on this. Starter is new, ignition switch is new, security is not the problem. If I put a fuse in, car with start but fuse blows right when I turn key to crank, then sometimes when I go to shut car off starter will try to start engine again, while turning the key backwards.

[carriedi]

fuse #54 should be the crank fuse. It only shows that it is connected to the powertrain control module and the park/neutral position switch. You might have to take it to a shop unless you can locate the wiring out of the fuse block and separate the wires to the pcm Pin B11 purple wire and the neutral safety wire pin A11 yellow wire and check each wire with a 10A fuse and see which one blows the fuse and then trace it from there. Have you added any electrical equipment or made any changes to the vehicle wiring? Check the wiring going to the neutral safety switch and see if it has rubbed through any where or is pinched somewhere.

[Guest]

Hello I have a 1998 pontiac bonneville and it isn't starting. It has a brand new starter and the battery if charger around 700. The security light is flashing constantly whenever I place the key in the run position but it doesn't do anything else. I tried doing the 10 min on run than 5 second off and repeating 2 more times like I was told but it didn't do anything. Is their any way to fix it or does it have to be took to a mechanic.

[carriedi]

when you are doing your 10 minute reset procedure does the security light go out? That's what you are waiting the 10 minutes for. If the system is operational, the security light should stop blinking and turn off after 10 minutes. If it is still blinking after the 10 minutes then it did not reset.

do you have another key you can try the reset with? your resistor pellet may be bad. see is another key works.

A common problem is that the wiring has a break. The theft deterrent module has two wires that go to the ignition switch lock cylinder. 1. white and black 1. purple and white. they send current though and the resistor in the key reduces the voltage and that voltage reading is what the deterrent module is looking for. Using a TECH2 scanner and looking at the security information will let you see the voltage through the key. It will tell you id the current is going through or if the circuit is open. If it read open then you will need to verify the wiring to and from the module and the lock cylinder.

If you have an Ohm meter you can measure the resistor in your key. Find the resistance and check all your other keys. they should all have the same resistance. If they are all the same then look at the wiring. If they are different try the other keys.

if you do not want to take it to as shop you could find the theft module and unplug the wire connector and measure the resistance where the purple/white and the white/black wire with the key in the run position. That would be doing the same thing that the module is doing. (Module is behind the glove box) Or unplug the module and measure Ohms at the wires coming out of the lock cylinder at the steering column connector. measure with the key out (should read open) and when the key is in. If you measured the pellet resistance then you should get a very close resistance at the wiring connector. If you don't you may need a new lock cylinder.

[Guest]

98 bonneville 3800 series 2. Crank no spark. Replaced cam sensor, crank position sensor, icm, all coil packs. Car stalls and won't restart. Cranks but no spark. Unplugged icm and car starts and runs again. Will stall a day later , unplug icm and restarts. No codes other that evap.

[carriedi]

You replaced all the important parts but have you checked if the signals are getting to the computer? You really need to use a good scanner that can tell you if you are getting all the right signals coming to the ECM/PCM.

Dash fuse panel, fuse 6, Fuel pump is the fuse that also goes to ignition module on a pink wire. the white and black wire powers up the cam and the crank sensors. the black/white is the ground from the sensors back to the ignition module.

while the parts may be new you have to verify that the wiring between all the parts has good contacts and no pinched or wires rubbed through.

let me know if you find anything... of what you can check out