I have a ram 1500,5.7 Hemi.Navagation-radio unit went bad,replaced truck worked fine for 2 weeks then would not crank tried jumpstart no luck everything under hood under 10000 miles,what to check for?

do you have a check engine light? are there diagnostic trouble codes? That should tell you what's wrong.

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Check engine compression and compare. then test running engine compression most engines have about 130-170 cranking compression and about 90-110 running compression. OR bring that cylinder to its Top Dead Center compression stroke apply air to the cylinder and check to see where the air is going open throttle plate bad intake valve, from exhaust pipe bad exhaust valve, from oil cap piston rings.

Either its a bad new battery or tour altenator isn't charging it. Jumpstart it.

On the side of the carb there a fuel sensor there...Has tiny screws and wires running to it. If it goes bad your car will idle..Your ECM sends a signal to open it for fuel..If it goes bad it want turn...Might try tapping likely on it...Go to your auto store and ask them about it first...Then you will understand better about how it works and if this seems to be your issue

The problem may be related to technical service bulletin TSB 03-001-07 which involves replacing the front axle actuator disconnect and a software update. You should be able to Google the TSB and look at the build date listed in the bulletin to determine if it applies to your vehicle.

You probably have a bad ignition coil. Which engine is in this truck? 3.7, 4.7, 5.7 or hemi

I had the same problem with my, 03, hemi. I did not wait 15 min. turn off and back on was all that was needed to reset, "red flashing light lower right hand ". though another 8 or 9 on off's, Engin Light also goes off, untill next time. All i did was pulled off my Air Intake box and hose, so i could get to butterfly on throttle bodie, sprayed carb cleaner in there. and it was very dirty. after put back togather, give it a few.... mine did not start right up, when it did idle real ruff even died few times...Once the computer re adjusted ran like it did when i bought it....that was 2 weeks ago, still no eng light, no flashing red ones either.

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