the engine will shut off code read p0190?

2008 FORD EXPLORER
120,000 MILES • V6 • 4WD • AUTOMATIC
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JAKNIYAH
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I recently replaced the crankshaft. The mounting brackets to the engine are intact, But now there is semi-harsh engine shaking. And occasionally, the engine will shut off.

Futhermore, Multiple harnesses wires were corroded and exposed, as well as mashed together from the insulation wearing off. I fixed the wires that I can visibly see. I hooked up a scanner, and the code read: p0190. What could be the problem.
Aug 26, 2025 at 7:53 PM
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MECHTRIX
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The po190 code indicates fuel pressure sensor A circuit problem (its on the fuel rail) so it makes sense why its shaking most likely having fuel and or wiring issues at the same time effecting the fuel volume and other things like air fuel mixture due ti the fualty circuit maybe with the injectors throws of all the mixture values and such among other things ... also check the pressure regulator and all the wiring to the pressure sensor and injectors and all the vacuum lines must not leak
Also did the engine have a harmonic balancer on it before the rebuild ? might check that too
if you try those things and it doesn't help get back to us good luck hope this helps
Aug 26, 2025 at 10:19 PM
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MECHTRIX
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This is a diagram for the pressure sensor please click below let me know what you learn good luck
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Aug 26, 2025 at 10:41 PM
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JAKNIYAH
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The harmonic balancer is in good standards. I recently replaced the fuel pressure sensor, as well as the connector for the sensor. There is less shaking, but noticed there was fuel build up in the top two right valve slots. Could it be that the two injectors are bad, and or the rail is no good? And I still get the p0190 code.
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Sep 1, 2025 at 10:44 AM
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MECHTRIX
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Yes that could be the vase but not the rail the injectors themselves if they leak or stop praying or evan just the seal leaking would be noticeable is you have others on hand it would be bad to just change them out when you hade the out at sompoint they could have been damaged it the nozel.. or somthing
But this isn't the acual problem id acually leave it alone for now and focus on the wires for the pressur sensor if your still getting codes its most likely the power supply signal from the pcm ...and if its found that its not that then the pcm itself could be at fualt there is a chance if you find a bad wire and fix it the the injectors will straiten out but if not you can do them later ..but yeah id look for bad wiring to the sensor somtimes its at the other end like at the plug to the pcm ive seen wires come loos there its rare but does happen so check there too oh and all the grounds too ... best if luck to you
Sep 1, 2025 at 7:55 PM