Asked by Jun 25, 2017 at 11:41 AM about the 2004 Mercury Marauder

Question type: Maintenance & Repair

Car was running fine but timing guide broke. Replaced
timing chain and now i cnt gt a signal to my crankshaft. All
sensors are a fail . Injector circuit high all circuits are hay
wire . I can gt a signal on cam shaft sensor though. What
could be my issue?

2 Answers


If it was running fine before you disassembled it... before replacing the chain guides, then go back and find your error! Confirm EVERYTHING has been indexed correctly. That 4.6 is a simple basic engine. .Check for a square wave signal from the CKP without a crank signal the EEC unit cant control anything.

2 of 2 people found this helpful.

The guy is probably not going to know the difference between a square wave and a hole in the ground. Sometimes we just get too technical on this forum. Ford's overhead cam engines are a bit tricky to time without the proper tools. Also if you get the cam timing off and try to start the engine, valves will be bent.

2 of 2 people found this helpful.

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