Fuel rail pressure sensor out after cam swap
#1
Fuel rail pressure sensor out after cam swap
Recently did a dod delete/ tsp chopcabra cam swap on a 2018 Silverado L83. It’s been about 5 days and the fuel rail pressure sensor code came up and reduced power to engine, currently ordered one but could this have just been a coincidence? Or is there something that could’ve have caused this as in tune, possibly timing off, etc or this is a common thing to happen
Last edited by georgecampa23; January 27th, 2024 at 7:38 PM.
#2
what was the code? Did you measure your fuel pressure?
#3
I actually don’t remember the code I stay next to Orileys checked it there and he showed me the code and what it was related to so I already knew what it was so I ordered it going to take off the manifold tomorrow check evething connected good I didn’t do the work for the cam and no I have not checked the fuel pressure, it got wideband street tuned so he probably upped the ratio and much as he could would that probably be a root of the problem?
#4
I also don’t have a stall converter yet the cam is meant for “stock converter” but it’s idling like it needs a stall I believe but it would drive good just when it idling with the air off it would jump up and down so I’m going to also upgrade to a 2800-3000 stall from circle D but could the rough idling may have some to do with it ?
#5
#6
Sorry I’m late but I changed the sensor out went back out so I have a feeling it’s not going out but telling me something about the pressure ? And I talked to the guy he said it could be my HPFP cause he said the tuned it to Idle 13.9-15.5 and full throttle 12.8 and also I seen when you take the fuel lines off from the HPFP they are a “1 time” use so maybe have a small problem there triggering the sensor ? I didn’t think much of it when having the cam swap since it wasn’t in no cam swap videos but when I see videos about the HPFP says change the lines cause once taken off they aren’t good ? Idk any other suggestions he said i I can come back and run some test tho but he’s a couple towns away so I would want to try and see if could atleast pinpoint what triggers the fuel pressure rail system and see if I can give it a go.
and if it’s from a lack of pressure or over pressured is that something you can specifically control fuel pressure in HPtuners
and if it’s from a lack of pressure or over pressured is that something you can specifically control fuel pressure in HPtuners
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#8
My gas mileage is bad too even before the cam just headers I’d get average of like 9 do got a lil heavy foot lil above average but it was a whole different tune from Houston idk I’ve felt like I’ve always have a fuel problem tho I guess maybe with the more demand on fuel the HPFP isn’t keeping up ? Id remember id have like 2 times out of no wheee my truck almost stall but that’s it it starts up fine instantly reset the code but when code is on does take a lil like 1/4 of a second maybe and code usually takes around 30 mins to pop up so that leads me to believe its not out like i said previously just some going one that causes it to go into limp
#9
My gas mileage is bad too even before the cam just headers I’d get average of like 9 do got a lil heavy foot lil above average but it was a whole different tune from Houston idk I’ve felt like I’ve always have a fuel problem tho I guess maybe with the more demand on fuel the HPFP isn’t keeping up ? Id remember id have like 2 times out of no wheee my truck almost stall but that’s it it starts up fine instantly reset the code but when code is on does take a lil like 1/4 of a second maybe and code usually takes around 30 mins to pop up so that leads me to believe its not out like i said previously just some going one that causes it to go into limp
#10
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I am working on a 2015 5.3 Silverado
I am working on a 2015 5.3 Silverado. I have the codes p306 p0172 p0175. I already checked the coils, the cables, the spark plugs and the compression. I think the problem is in the high pressure pump, the pressure must be getting bad to the injector of cylinder 6 and that is why. it fails me in that cylinder
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chevytruckman2004
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June 2nd, 2014 10:45 AM