MHARPER1 Posted March 10, 2015 Report Share Posted March 10, 2015 I have an 03 Silverado SS AWD. I just recently had it on the body shop getting rust panels installed and painting it. I was driving it today and it started sputtering and missing and died. I thought the fuel pump went out so I changed it. Not it. Checked the fuel pressure and it maxed at 48 psi at idle and dropped to 40 when I gave it gas. Thought it was the fuel pressure regulator, not it. Checked the flashing codes and it read multiple cylinder misfire p0300 and mass air flow sensor, p0101, so I changed the sensor, not it. The truck is running like shit and I'm ready to pull my hair out. Any suggestions? Quote Link to comment Share on other sites More sharing options...
70chevy03ss Posted March 10, 2015 Report Share Posted March 10, 2015 Did you clean the throttle body at all. Check the plug wires? Also did you throw in a new fuel filter? Just some ideas Quote Link to comment Share on other sites More sharing options...
Mcinalli123 Posted March 10, 2015 Report Share Posted March 10, 2015 Sounds like it's starving for fuel like a bad pump the pressure should be higher then that Quote Link to comment Share on other sites More sharing options...
1BAD2K Posted March 10, 2015 Report Share Posted March 10, 2015 Fuel filter Quote Link to comment Share on other sites More sharing options...
kaze_v8 Posted March 10, 2015 Report Share Posted March 10, 2015 Crank Sensor, Crank Sensor, once again ill say it again Crank Sensor! Happened to me on my previous truck, had tons of ppl tell me fuel filter, pump, injectors, all sorts of crap, ended up spending hundreds of dollars, to end up finding out it was the crank sensor. The symptoms are exactly like mine, make your best judgment, good luck. Quote Link to comment Share on other sites More sharing options...
MHARPER1 Posted March 10, 2015 Author Report Share Posted March 10, 2015 (edited) Did you clean the throttle body at all. Check the plug wires? Also did you throw in a new fuel filter? Just some ideas The throttle body is only about 10 months old, so no I didn't. I didn't change the plug wires either or look at the plugs, but I did have someone tell me to do this also. I am having my mechanic check them out. Thanks. Sounds like it's starving for fuel like a bad pump the pressure should be higher then that The pump is brand new and is getting the pressure to right where it ought to be now that I changed out the pressure regulator. Thanks. Fuel filter The fuel filter is about a year old, so I guess it could be but i wouldn't think so. Thanks. Crank Sensor, Crank Sensor, once again ill say it again Crank Sensor! Happened to me on my previous truck, had tons of ppl tell me fuel filter, pump, injectors, all sorts of crap, ended up spending hundreds of dollars, to end up finding out it was the crank sensor. The symptoms are exactly like mine, make your best judgment, good luck. I had someone else tell me this exact thing. I actually got fed up last night and took it to my mechanic who has always done all the work I couldn't figure out. I will throw this his way if he doesn't come up with anything, but he is pretty good. I will let everyone know what it turns out to be. Thanks. This is the only issue I have had with this truck other than the reduced engine power crap that made me change out the throttle body pigtail. All in all its been a great truck. Edited March 10, 2015 by MHARPER1 (see edit history) Quote Link to comment Share on other sites More sharing options...
eberhama Posted March 11, 2015 Report Share Posted March 11, 2015 If it will idle, but some what low and rough, and gets a little better as it warms up, I'd vote for intake gaskets. Quote Link to comment Share on other sites More sharing options...
MHARPER1 Posted March 11, 2015 Author Report Share Posted March 11, 2015 Ok, got the worst news possible. The truck has a burnt valve over cylinder 6, which now has no compression. Looks like an engine rebuild for me. Any suggestions on how I should approach this. The truck has 223,000 miles on it, so I am going to completely rebuild it. Quote Link to comment Share on other sites More sharing options...
canadianVRss Posted March 11, 2015 Report Share Posted March 11, 2015 (edited) Since you're completely rebuilding it, 408 stroker. That should make you happy for a bit. Edited March 11, 2015 by canadianVRss (see edit history) Quote Link to comment Share on other sites More sharing options...
MID12sSSS Posted March 11, 2015 Report Share Posted March 11, 2015 Ok, got the worst news possible. The truck has a burnt valve over cylinder 6, which now has no compression. Looks like an engine rebuild for me. Any suggestions on how I should approach this. The truck has 223,000 miles on it, so I am going to completely rebuild it. Bad luck dude.. But nows the chance to build it up how you really want it. Just depends on your budget and how fast you want your truck back on the road. Quote Link to comment Share on other sites More sharing options...
MHARPER1 Posted March 12, 2015 Author Report Share Posted March 12, 2015 definitely on a budget, about $2000 is what I'm working with. Quote Link to comment Share on other sites More sharing options...
Downeast Johnny Posted March 12, 2015 Report Share Posted March 12, 2015 Ok, got the worst news possible. The truck has a burnt valve over cylinder 6, which now has no compression. Looks like an engine rebuild for me. Any suggestions on how I should approach this. The truck has 223,000 miles on it, so I am going to completely rebuild it. Sorry to hear about your tough luck. Hope you find a $2,000.00 solution. Best luck. Quote Link to comment Share on other sites More sharing options...
EXGM Posted March 12, 2015 Report Share Posted March 12, 2015 Ok, got the worst news possible. The truck has a burnt valve over cylinder 6, which now has no compression. Looks like an engine rebuild for me. Any suggestions on how I should approach this. The truck has 223,000 miles on it, so I am going to completely rebuild it.I think you got your money's worth 223k? Good lord that is a lot of miles...... Quote Link to comment Share on other sites More sharing options...
canadianVRss Posted March 12, 2015 Report Share Posted March 12, 2015 I had 228k miles on mine and pulled it for a 408. Was running fine when I pulled it. They'll go for a long time. I think you got your money's worth 223k? Good lord that is a lot of miles...... Quote Link to comment Share on other sites More sharing options...
MID12sSSS Posted March 12, 2015 Report Share Posted March 12, 2015 definitely on a budget, about $2000 is what I'm working with. For $2k, just get her rebuilt up with stock guts and a nice cam. Should be a quick turn around. Quote Link to comment Share on other sites More sharing options...
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