Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
Hello, and thank you for using Just Answer! My name is***** me a few moments to review your question and Ill do my best to assist you.
Hello, is the check engine light on and any trouble codes stored?Does it loose power at a higher rpm but ok if easy on the throttle? How many miles are on the truck? Was the fuel filter plugged up?
Ok A random misfire can be caused by a crankshaft position sensor or a loss of fuel pressure under a load. I would have the truck re checked for diagnostic trouble codes and see if there is a crankshaft position sensor code along with the misfire codes and test the fuel pressure if needed if there are no codes other than a P0300 random misfire. If fuel pressure is weak when it happens then it can be a weak fuel pump.
Also egr valves are common faults on these 4.3 engines as well but it will set a code for the egr system if there is a malfunction
What do you mean it smells like its fluxing? What else did you change?
Ok you need to run the scan on it again to see what else is going on to verify if any other codes are set since you have done some repairs to it.