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Car Forum / Pontiac / Pontiac Cars / October 20082000 Grand Prix with a 3.8L v-6 erngine won't start
I have a 2000 Pontiac Grand Prix with a 3.8L v-6 that won't start. Originally when turning the ignition you would hear a cluncking sound from under the engine but thats all. I thought it was the starter solenoid and bought a new starter. After installing the new starter, and turning the ignition key, nothing happens. I have checked the voltage going to the starter, (goinng from the bolt the power comes in on to the ground screw) and get 10.5 volts when trying to crank it. Checking from the Ground screw to the bolt with wires leading to the starter motor, I get no Voltage when trying to crand the car. Is the new Starter bad? Thanks Alan > I have a 2000 Pontiac Grand Prix with a 3.8L v-6 that won't start. > Originally when turning the ignition you would hear a cluncking sound [quoted text clipped - 10 lines] > > Alan Sounds like a dead battery. > Abrown1...@sc.rr.com wrote: > > I have a 2000 Pontiac Grand Prix with a 3.8L v-6 that won't start. [quoted text clipped - 13 lines] > > Sounds like a dead battery. When checking the voltage on the battery, it reads 12.8. So it does not appear to a bad battery. Thanks for the response. Alan >> Abrown1...@sc.rr.com wrote: >> > I have a 2000 Pontiac Grand Prix with a 3.8L v-6 that won't start. [quoted text clipped - 18 lines] > >Thanks for the response. Check the voltage between the post and the clamp attached to it. Sometimes you get enough "hidden" corrosion between the post and clamp, that you effectively have no connection. Tom S. On Oct 1, 5:27 pm, Paul <P...@slowcast.net> wrote: > Abrown1...@sc.rr.com wrote: > > I have a 2000 Pontiac Grand Prix with a 3.8L v-6 that won't start. [quoted text clipped - 13 lines] > > Sounds like a dead battery. When checking the voltage on the battery, it reads 12.8. So it does not appear to a bad battery. Thanks for the response. Alan I've had batteries that the voltage looked ok , but didn't have enough amps to crank the car over. Do you have power to the headlights? Try getting someone to crank the engine with the lights on and see if there's enough power to keep them bright. Jay S > On Oct 1, 5:27 pm, Paul <P...@slowcast.net> wrote: >> Abrown1...@sc.rr.com wrote: [quoted text clipped - 25 lines] > > Jay S Not enough amps... Check the voltage at the battery when cranking, if it's below 9 volts change the battery out. I see the OP says when cranking battery shows 10.5 volts so battery while starting is good. Follow-up, The battery has side screw, not top post. I replaced the screws that attach the cable will no real effect on the voltage when tested again. I can now hear the solenoid engage and it sound like the starter is engaging the flywheel but will not turn it. Checking the voltage at the starter reveals the same values as before. The service engine light stays on so I will check the codes on Saturday, to see what that will tell me. I have put a socket wrench onthe main pulley ( aligns with the crankshaft I believe ) and can turn it in a counterclockwise direction. You can see the fan belt move, while doing this, but it is difficult to turn. I'm begining to wonder if it is the timing chain that has gone out. Is there an easy way of checking this short of digging into the engine? Alan What was happening when the engine last quit? You could very well have the dreaded 3.8L upper intake failure disease, with your cylinders full of coolant. On Oct 1, 3:57�pm, Abrown1...@sc.rr.com wrote: > I have a 2000 Pontiac Grand Prix with a 3.8L v-6 that won't start. > Originally when turning the ignition you would hear a cluncking sound [quoted text clipped - 10 lines] > > Alan On Oct 1, 1:57 pm, Abrown1...@sc.rr.com wrote: > I have checked the > voltage going to the starter, (goinng from the bolt the power comes in > on to the ground screw) and get 10.5 volts when trying to crank it. > Checking from the Ground screw to the bolt with wires leading to the > starter motor, I get no Voltage when trying to crand the car. Is the > new Starter bad? Could you specify for me, ?ground screw? Are you talking about the main ground? The one that leads from the battery to the body, or a different one? The starter should have one hot coming from the positive terminal of the battery and then one solenoid wire. The easiest way to determine if it's your batter or not is to test the system with a battery that is known to be good. A bad starter can destroy a previously good battery very quickly, regardless of voltage readings. Try a different battery, not a jump start, and please let us know. GRAND PRIX now Starts.......... but.......... THe problem with the car not starting was the air conditioning compressor had comletely locked up and apparently burned out the started. Wiht that part replaced the car will now start. There also was a bad connector leading to the starter. The car now starts and the engine is running fine. However the radio will not turn on, the fan for the airconditioner will not work, and the keyless entry does not work. I checked all fuses and they are ok., I expected the anti- theft feature to have it locked up, but the display is blank, and the procedures to unlock it will not work. Any sugestions? Thanks agian for your help. |
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