BearsBomber Posted February 2, 2015 Report Share Posted February 2, 2015 Hey guys, having some issues with my daily driver and could use some help since I'm running tight on funds. On Friday I ran codes on my truck, came back with O2 sensor(B1,S1) not working and a EGR code. So I found the sensor unplugged, so plugged that in, and cleaned my EGR valve, cleared codes. Saturday I went to drive around and found that if I try to accelerate with any hopes of going somewhere the truck would chug and would not go over 2500 rpms, but if I ease into like Oldtimer, it will gain speed smoothly but still bucks if I try to take it over 3k RPM. The SES light would only flash occasionally while driving but wouldn't stay on, finally yesterday it stayed on long enough for me to take it by Auto Zone and get the codes ran. Here are the 10 codes it pulled, P0265, P0251, P0246, P0242, P0252, P0245, P0241, P0134, P0135, P0300. I looked up all these codes and most of em are Turbocharger related, which I don't have, so I'm totally confused. I know the p0300 is a random misfire but doesn't really help. The codes cleared yesterday after I had them checked and drove home and I'm currently SES free, but the truck still runs like hell. I'm thinking maybe the fuel pump is going out and not sending the PSI out? 2001 GMC Sierra 1500 with 5.3L 2WD 245k Miles. Any input would be appreciated guys. Link to comment Share on other sites More sharing options...
ks2290 Posted February 2, 2015 Report Share Posted February 2, 2015 Check the cat converter ours did the same and it was plugged try removing a sensor before the cat and see if it runs better. Link to comment Share on other sites More sharing options...
BearsBomber Posted February 2, 2015 Author Report Share Posted February 2, 2015 Ok,I'll try that. I do that for the past 6 months if i floor it past 4k, i hear rattling in the exhaust. It's also smoking pretty heavy out the exhaust Link to comment Share on other sites More sharing options...
HiTech Posted February 3, 2015 Report Share Posted February 3, 2015 yep i was going to say check that out . Link to comment Share on other sites More sharing options...
BearsBomber Posted March 24, 2015 Author Report Share Posted March 24, 2015 So, after new fuel filter, plugs wires, a new O2 sensor, cleaned EGR and plenty of cussing and head scratching, both Cats were clogged... thanks for the help! Link to comment Share on other sites More sharing options...
HiTech Posted March 25, 2015 Report Share Posted March 25, 2015 good deal nick ..the last thing anyone ever checks is those darn cat.s they think exhault coming out means they are good .that is one of first things i check when low on power .... Link to comment Share on other sites More sharing options...
ks2290 Posted March 25, 2015 Report Share Posted March 25, 2015 Alright score one for the youngin getting it right before HiTec.Glad u got it fixed Nick Link to comment Share on other sites More sharing options...
HiTech Posted March 25, 2015 Report Share Posted March 25, 2015 Alright score one for the youngin getting it right before HiTec.Glad u got it fixed Nick The only time i will LET YOU have the checker flag tj... Link to comment Share on other sites More sharing options...
ks2290 Posted March 25, 2015 Report Share Posted March 25, 2015 Lol dont matter if u gave it to me or i took it I still got it. Link to comment Share on other sites More sharing options...
HiTech Posted March 26, 2015 Report Share Posted March 26, 2015 The real winner here is good old nick... Link to comment Share on other sites More sharing options...
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