My truck starts idles but when I'm going
down the rd it dont sputter or anything it just
completly dies I pull over cut it off and turn it
back over and it starts back up. What could
it be ?
First thing I would check is the fuel pressure, if at all possible get a fuel pressure gauge , hook it up to the shrader valve on the fuel rail, look up what the pressure should be with KOER (KEY ON ENGINE RUNNING) with gauge hooked up run it under the hood in front of the windshield so you can see gauge inside of truck , gently shut hood and drive until it dies and observe if the pressure drops before it dies, if so then your looking at a fuel pump.
If this is a gen2 Dodge with a 5.2 or 5.9, the keggar/intake manifold could be your problem. This darn plenum gasket causes all sorts o' nightmares seemingly unrelated to the problem. The sinplest check is either to pull your intake air sensor n see if it's coated with oil or check down the TB to the base of the plenum, if oily, then you got the dreaded blown plenum base gasket. It also coats the IAC valve and can cause a lean condition. If the IAC valve, you'll hear a hissing noise just before engine failure.
THAT's an intake air temp sensor
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