i was driving down the road stoped at stop sign it died would not start again so i left it over nite and in the morring it started and i drove it home turned it off and started it again but now it will not start help me out please
2007-06-06 15:10:59 · 6 answers · asked by Anonymous in Cars & Transportation ➔ Car Makes ➔ GMC
What went wrong is the fact that this vehicle is 17 YEARS OLD!
2007-06-06 15:18:52 · answer #1 · answered by Anonymous · 0⤊ 0⤋
I take it the motor cranks, but won't fire. If that is the case you have to do a couple of checks. First is to check to see if the SES light comes on when the ignition is turned on. That will at least tell you that the PCM is active. You should check for codes and data to be sure the PCM can operate the truck as well. Most likely it can, so I'll move on. Lift the air cleaner off the TBI and remove the coil wire at the coil assembly itself. If it comes off and there is corrosion all over the place, you will need a new coil, all new spark plug wires, new cap and rotor, and while we are at it, eight fresh plugs and a fuel filter. These trucks were a mess for corrosion of all these parts. If that is okay, leave the coil wire off at the coil and reach around and turn the motor over. There should be spark that is strong and consistent snapping out of the coil's tower. If there is none you probably have a primary ignition problem. If it is weak, there is a short inside the coil and it needs to be replaced. If you have no spark, you will have to install a 12V test light to ground and to the white wire connector or wire that comes off the coils primary connections. There are four wires at the coil and there is usually a connector taped to the harness with nothing going to it and the wire will be white. Probe this wire and hold to be sure of a good connection. Turn the ignition on and the test light should light up. If not, you have a power supply problem to the coil. If it lights, go ahead and turn the motor over again while still having the test light connected. The light should blink very rapidly if it is working properly, if it does not blink, you probably have an ignition module or a pick up coil problem. Lift the cap off of the distributor and inpsect and test the pickup coil for about 900 ohms. If that test is good, replace the module. Be sure that the distributor shaft is not worn out by wiggling it around. It should not be able to be wiggled. If all this is good, you have a fuel pump or electrical problem to the fuel pump problem. This will require you to check for fuel flowing to the TBI unit. Then you will have to electrically check for power and ground to the pump at the connector at the fuel tank. Good luck.
2007-06-07 16:13:10 · answer #2 · answered by Deano 7 · 0⤊ 0⤋
Run a jumper from the plus of your battery via a disconnect swap straigt to the starter sillinoid . Take the twine that comes out of your ignition off. as a fashion to start your engine , push the swap like interior the previous days. on an identical time as the ignition is became on .better than probable the mechanism from the ignition on the guidance colomn would not artwork precise by using placed on and the sillinoid would not get adequate voltage to coach the starter.
2016-11-26 21:18:00 · answer #3 · answered by buono 4 · 0⤊ 0⤋
You need to isolate the problem,I would take it to the parts store that lets you borrow there scanner to see what the code is and go from there.It also might be the fuel pump going bad,you will need a fuel pressure tester for that check.Good luck to you.
2007-06-06 15:21:24 · answer #4 · answered by sasyone 5 · 0⤊ 0⤋
either its your fuel filter or its the cap and rotor where all the connections go to.
2007-06-09 04:39:44 · answer #5 · answered by Anonymous · 0⤊ 0⤋
Pick up coil.Just guessing.
2007-06-06 15:28:31 · answer #6 · answered by gdwrnch40 6 · 0⤊ 0⤋