Re: there is no spark at the plugs and the fuel pump.
ASD relay is disengaged. Replace the Hall Effect sensor (magnetic pickup) ($40) located under the distributor rotor. If this is not the cause replace ASD ($50) relay located on driver side wheel well. If this doesn't do it you will have to get a garage to scan it for you. ASD shuts down the ignition and fuel if it detects a fault, magnetic pickup reports engine turning.
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Re: there is no spark at the plugs and the fuel pump.
Hello test all your fuses its possible you snapped engine control module fuse ecm,ign, check fuses with a test light ground to a good ground test both sides of fuse usaully at the tops you will see two small open areas with a piece of small metal exposed this is were you put the probe to test also look underhood drivers side for a secondary fuse box goodluck
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Fuel or spark plug trouble could be a cause for an engine not starting. Check for spark plug spark. Remove spark plug wire and see if the wire makes a spark on engine when spark plug wire is energized. Do not tounch engine or come in contact so that you are shocked when testing for spark plug action. Check fuel pump to see if fuel is being supplied. Disconnect fuel line and place the fuel line inside a container to capture fuel. Do not cause a fire from loss of control of fuel line during trouble shooting.
Well, there are several basics your engine needs to start: Spark, fuel, compression, and correct valve timing. I am going to assume on good faith that your GT has the 3.4 liter V6. Here are a couple basics on checking fuel and spark: GM usually puts a schraeder valve (looks like a tire air valve) on the fuel rail. This is where you connect a fuel pressure gauge to test the fuel pressure. It should be 52-59 PSI when you turn the key to run. If your fuel pressure is good, remove a spark plug wire from one of the front 3 spark plugs. If you have a spark tester, connect it to the removed plug wire. If you don't have a spark tester, remove the spark plug. Plug the removed spark plug or tester into the plug wire. Touch the metal threads of the plug or tester to a good solid metal part of the engine using gloves or non-conducting (plastic) pliers. Have someone try to start the engine. Watch the gap at the end of the spark plug. You should see a bright blue/white spark and hear it snap every time it fires. If you don't, there may not be any spark getting to the engine. Diagnosis of the problem can be far trickier from here on out. You will need to be able to diagnose electrical problems in the fuel/ignition system to find the root cause of no fuel/no spark.
If you cannot hear the fuel pump run in the tank when you turn the key to run, try lightly rapping the bottom of the fuel tank with a hammer turned to its side (don't put a hole in your fuel tank!) while someone cranks the engine over. If the engine starts, most likely cause is a failed fuel pump. Don't expect the car to keep starting on a regular basis if it does start by hitting the tank. The fuel pump will need to be replaced.
Make sure you have spark and fuel. when you first turn the key to the "ON" position you should be able to hear the fuel pump whirr or run for about 3 seconds to prime the fuel system, if not you need to check the fuel pump fuse and the fuel pump relay to make sure the fuel pump is getting power when you turn the key on. If you can hear the pump run and do have fuel pressure, then you need to make sure the engine has spark. You can do this by removing a spark plug from the engine and putting it back into the plug wire, make sure the metal bottom of the plug is touching a metal part of the engine and have someone crank on the engine while watching the gap in the electrode of the plug. You should have a very sharp blue spark jump the gap in the electrode. If you have no spark or a weak orange looking spark then I would look to the crank sensor or the coil.
2 things that you have to check on no starts every time. Spark at spark plug and fuel. Turn key to run position and listen at gas tank for fuel pump to run you should hear a whining noise. This will only happen for 3 to 4 seconds then it will shut off until engine starts. You can turn key off then to run every 3 to 4 to listen for fuel pump. You may hear the relay click off in engine area even if pump does not run. Fuel pump failure is pretty common. If pump is running pull spark plug out or put a spare plug into spark plug wire and have someone crank engine set plug on engine and watch for spark. This will give you a starting point. Hope it helps.
I would check fuel pressure so you can rule out pump. I had a bad pump right out of the box before. Also you may want to change fuel filter so you can rule out plugged filter. You have spark, sure seems like still no fuel.
This may be a result of no fuel or no spark. To test, remove a spark plug after turning the engine over for a few turns and smell it. If it smells like gas, it's a spark problem, if not you should check your fuel lines for leaks or your fuel pump. A quick way to test the fuel pump is to put the key in the ignition, turn it to "on" but don't try to start the car and listen for the pump to "prime" the system. It will sound like a low humm.
To check for spark, remove a plug and hold it against the engine block while someone tries to start the car (only turn the engine over once or twice while doing this!). If you are getting spark, you should see it. If you aren't, check the firing order, the distributor cap/coil packs, wires, and the plugs themselves.
pull a spark plug wire off at spark plug put another plug in wire lay plug and wire against metal of engine and turn motor over looking at plug for spark. as for pump noise turn key on not to start and listen for whine noise for a couple seconds. if hear whine that is your fuel pump noise. not a clear filter canister about under drivers seat on inside of fram
if the starter is revving very slowly it is the battery, charge battery. if not, It can be three things happing. 1 no spark 2 no fuel 3 no crank signal or the car computer is bad- you will need to unplug one of the spark wires and remove the spark plug and put the spark plug in the spark plug wire boot, and touch the spark plug on any metal on the car and have some start the car. donot touch the spark plug itself and see if there is a spark. if spark is bright, then it is not spark plug and wires but if no or spark is not bright, check the spark plug wires by applying a little bit of water on the spark plug wire and take a 12v test light, connect the clap to ground and and have some one to crank the vehicle, touch allover the spark plug wires with the tip of the test light, if you see spark, replace the wires and change the plugs.. they are not good. if spark is present, check for fuel by removing any one of the spark plugs and see if it is wet. if wet fuel pump is ok but if not go look for the fuel pump fuse and relay. is fuse blown, replace, check the relay resistor with a volt meter. it should be around 40 to 80 ohm. if everything is good from this point check the fuel pump itself by disconnecting the connector to the pump and apply 12v and ground using jumper wires or some wires to the fuel pump if you donot hear the pump,replace pump. if you, the crank signal or computer may be the problem