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Bmdouble

San Antonio, TX

Senior Master Ford technician,hybrid vehicle certified,20yrs exp. specializing in electrical,driveability repairs.


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Question Answered: 

on front of engine above crankshaft timing belt pulley,will have to remove timing cover to access.


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Question Answered: 

po401? most common problem= faulty dpfe sensor and clogged egr ports. po171,po174= collapsed/split pcv tube at rear of throttle body. not saying this is what your problem is,but I have made a very good living replacing these parts with no comebacks.


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Question Answered: 

I would not run it any more,call a reputable shop and have it towed to them before further damage is done if it is in fact salvageable.


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Question Answered: 

absolutely,there are probably codes stored in memory as long as you have not disconnected the battery anyways.


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Question Answered: 

Honestly I have converted MANY navigators to standard suspension over the years because it will drain your wallet faster than the air that it's pumping into nowhere! I have seen issues that seem simple turn into $2-3000 repair bills only to be back the following year with more problems. Just google it and you'll find info on conversion.


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Question Answered: 

I would start by retrieving the dtcs from the powertrain control module,also check for vacuum leaks as they will be pronounced when engine is cold. Take note if any smoke and the color if it when you start it also.


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Question Answered: 

Sounds like a faulty cluster to me. Some clusters will have voltage regulators on the circuit boards that go bad, while others have gauges that go bad. I would have this diagnosed by a dealer level tech that sees these vehicles everyday.


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Question Answered: 

make sure fuses are good,also wire breaks are common to occur at the door to body boot because of flex when opening and closing the door.


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Question Answered: 

check voltage at starter battery terminal when turning the key to the start position.


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Question Answered: 

A faulty canister purge solenoid can cause this as well because if the pcm does not see a change in the ftp sensor reading it assumes that there is a large hole and the tank cannot be pulled into a vacuum to check for leaks.just something that I've run into before.


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