Question about 2004 Lincoln Navigator
Error message/warning bell occurs frequently. Truck starts and seems to run fine. Brought to dealer to diagnose and they replaced park assist module first, followed by Powertrain Control Module. Neither has fixed this issue. Anyone help would be appreciated.
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Posted on Jan 02, 2017
It will be under hood on the right side at the firewall looking from the front find your heater coolant hoses where they go into the heater housing and it will be to the right of these in the side of the heater housing.
Posted on Apr 14, 2009
Sounds like a dealer only part. Sorry. There are other routes you can take with these vehicles. you can change out the air bag suspension with regular shocks and struts.
Posted on Jan 06, 2010
for p0304 the possible solutions:
If there are no symptoms, the simplest thing to do is to reset the code and see if it comes back.
I know this tool is helpful for your car.
If there are symptoms such as the engine is stumbling or hesitating, check all wiring and connectors that lead to the cylinders (i.e. spark plugs). Depending on how long the ignition components have been in the car, it may be a good idea to replace them as part of your regular maintenance schedule. I would suggest spark plugs, spark plug wires, distributor cap, and rotor (if applicable). Otherwise, check the coils (a.k.a. coil packs). In some cases, the catalytic converter has gone bad. If you smell rotten eggs in the exhaust, your cat converter needs to be replaced. I've also heard in other cases the problems were faulty fuel injectors.
Posted on Jul 19, 2011
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