My hyundai 2004 sante fe 3.5l will not start.It will crank but will not start. There is also not no communications with the ECM Nothing will scan on scan tool. I have replaced the ECM with two other computers with no results! What gives??
JA: Have you checked the fuel supply? And are all the spark plugs working?
Customer: I have hot wired the fuel pump
and it pumps fuel . no spark on any plugs. The computer will not turn on the fuel pump and will give no information to the scan tool . Scan tool says that there is no communication with scan tool.
JA: What is the model of your '04 Hyundai?
Customer: Sante fe AWD LS 3.5l engine
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: Changed out the computer , New crank sensor.
JA: Anything else you think the mechanic should know?
Customer: before this happened the car lost the tach . I also replaced the missfire sensor because I was getting no tach before it totally stopped working with no start -no obd communications!