Question about 2000 Chevrolet Blazer
Ok,i need more info,lights work a]could you test your battery to see if it good probably 11.7 to 12.1 volts,you will need a voltmeter.b]when you crank it, you need to verify for sure if it has spark,feel like no spark or feeling no gas does not help,pull out a spark plug boot from the spark plug,insert a small screwdriver and keep the screwdriver metal 1/4 away from any good ground and then crank it,if you have spark you need to check for fuel,rent a fuel pressure gauge at autoparts store and check for fuel pressure and give us those numbers,if you do not have spark and fuel probably you need to change the ignition module,or ignition switch,but if you have spark andyou have fuel you need to check with a scanner the status of the crankshaft sensor to see if it recieving volts .let me know when you have some numbers,if for some reason you can not perform these test leave alone and pay a mechanic ,it does not worth it that you get hurt trying fixing something dangerous.keep me post it.
Posted on May 24, 2009
OK, you do have ign. Can you hear the fuel pump come on for a few seconds when you first turn on the key? Most likely if you did, the truck would start and may or may not continue to run, but it sounds like it does not run unless you put fuel in the air intake. Check your fuse for the fuel pump. Most times will not be marked as a fuel pump but as a an ECM or ECU. If your fuse seems good, then you could use the ALDL connector inside the truck to test the fuel pump directly. GM was thoughtful in putting a fuel pump test lead in the connector. Does this truck have a VAT? Also check the pump disable switch. If you have a blown fuse, you better find out why. If you replace the fuse and it runs but blows out when you drive it, you have a wire that is rubbing to ground and needs to be repaired. You can also test the pump directly by tracing the pump wire from the tank, but you must be careful doing this, and it may be beyond your tech ability. Check out alldata.com for wiring diagrams. If all this proves the pump doesn't work, you will have to drop the tank and replace the pump.
Posted on May 25, 2009
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Posted on Jan 02, 2017
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