Sep 17, 2010 · We have a 2008 Chevy Suburban with 50000 miles on it. For the past year we keep getting misfire codes and replacing spark plugs, never the same one, which cures the problem for about 1000-2000 miles and then the car intermittently runs rough, maybe throws and engine light, sometimes not and then at the next service we replace another spark plug and then it all begins again. Performance modifications, tips & tricks. Moderators: [email protected], James B., flyingpolarbear, Dev Post Reply Dec 15, 2006 · P0300 code random misfire... This is a discussion on P0300 code random misfire... within the General Help forums, part of the LSx Technical Help Section category; Thats what my car is throwing. I have changed the plugs a few times and it is still there.
GM option codes RPO Codes- 0 through 4 RPO Codes- 5 through 9 RPO Codes- A through F RPO Codes- G through M RPO Codes- N through S RPO Codes- T through Z : RPOcodes.com
I have a 2007 Silverado classic With a 5.3. From Day one The Truck seems to have a misfire but Not bad but noticable. The past month has been really Bad. But theres no check engine light at all. It can be felt at a stop light idleing, some times the RPM needle will boune around a bit, and you can fell it if you were to lean on the truck.
You pull the code and get P030x misfire codes almost always and more and more now we're seeing the P1133 codes coming in with them. Now the first one kicked my ass. Misfires on 1, 3, 5, and 7 constantly with no intake leaks and O2 values that seemed normal enough for a misfiring truck. Noticed the other day the idle on the truck sounded funny and felt funny. I plugged the Predator in and checked for codes, and the P0300 Random Multiple Misfire pops up. That's it. Uninstalled the tune, and it didn't change anything, so I am assuming there is an actual problem with the truck. It only does this at idle. Home › Forum › Chevrolet › 2016 Suburban 5.3 rough ... weren’t throwing any codes or showing misfires in the misfire data that fixed the problem. ... 8-Speed Automatic GM Transmission ... Fireonchange vs addonchangeI have a misfire that cannot be diagnosed!!!! 1999 5.3 Sierra. My engine has been rebuilt because of a dead #7 cylinder at 167800 miles. We figure a weak coil caused this. It would run with a slight miss but was not noticeable at hwy. speeds with the CEL only coming on intermittingly. Then it became a dead miss with the rings becoming stuck ...
Jan 31, 2013 · I have a misfire that cannot be diagnosed!!!! 1999 5.3 Sierra. My engine has been rebuilt because of a dead #7 cylinder at 167800 miles. We figure a weak coil caused this. It would run with a slight miss but was not noticeable at hwy. speeds with the CEL only coming on intermittingly. Then it became a dead miss with the rings becoming stuck ...
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Jun 16, 2012 · A misfire will not always set a code. I had idle misfire on my '03 DOHC for at least 6 months and no codes, no pending. Still makes no sense. #2 plug wire caused a misfire, but my Ultragage showed wild spark advance ranges when it misfired. So it was not a clean misfire, other things went wrong at the same time.
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Aug 18, 2016 · There may be DTC codes set in either of these cases. FUEL – STARVATION, MIS FUELING Along with vacuum leaks, this is the second most common failure point area. 1. Clogged fuel filter – engine will usually idle without misfires, but will misfire at higher RPM, under acceleration, or under load. GM has no service interval for fuel filters. Oct 11, 2018 · GM Code P0300 Definition. Random/Multiple cylinder misfire detected. Commonly associated with GM codes: P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308; What Does GM P0300 Mean? GM code P0300 indicates that one or more cylinders are experiencing misfires. A misfire occurs when an insufficient amount of fuel is burning in a cylinder. They are TSB 3055 (NHTSA #10009666) having to do with cylinder 7 misfire and TSB 3280 (NHTSA# 10013502) - rust found in injector screen inlet filter. It would be interesting to know what GM does to address this problem. Performance modifications, tips & tricks. Moderators: [email protected], James B., flyingpolarbear, Dev Post Reply
The GM 5.3-Liter Engine Problems & The Class Action Lawsuit. Back in December of 2019, the GM 5.3-liter engine had so many issues that a class action lawsuit was filed. According to CarComplaints.com, the lawsuit "…alleges the Generation IV Vortec 5300 engines burn too much oil in these vehicles."Feb 07, 2011 · Your truck's bank 2 knock sensor is a common failure, the 2 knock sensors as you know are under the intake, they both "sit" in a "cup", there is a problem with water intrusion into the rear B2 knock sensor.GM has a bulletin on the issue, after kncok sensor replacement a bead of silicone is placed around the rim of the "cup" to avoid this ...

Update apps from blackberry world and google playCan someone please help with what I should check next, I have a 1998 Chevy K1500 5.7 Vortec with a misfire, P0300 code for 3 months. runs a little rough, while driving under normal conditions it sputters, hesitates, and also will backfire, under heavy acceleration no noticeable skip, no sputters, and does not hesitate or backfire.GM Sensors have traditionally been outsourced to overseas manufacturers, the same ones who supply throttle position sensors to other makes like Ford and Toyota. As such, theirs are generally no less reliable than anyone else's, but will eventually fail over time. Vampire levi x reader lemon forced
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Dec 04, 2019 · Misfiring is not a problem of just Chevy 6.0 Vortec engine. Any engine can create misfire if the technical problem occurs. In an engine, oxygen, fuel and spark work behind a misfire. But these are essential elements for keeping the engine running. As a result, you can’t prevent any of these elements to work under your hood.
Gimkit cheat codesSep 24, 2020 · C8 Corvette Valve Springs Problem Acknowledged By GM, Other V8 Models Affected ... powerplants just like the 5.3-liter L84, and L8T is the RPO code for the 6.6-liter ... misfire codes ... The P0307 code means that the cylinder 7 is misfiring or is randomly misfiring. Start by checking for intake leaks and if no leaks are found the next step is to replace the spark plugs on cylinder 7. If the problem persists more tests need to be done to diagnose the problem, see "Possible Causes". Misfire no codes 1 Answer. So I have a 2004 Chevy trail blazer 4.2 engine. I have owned the vehicle since February. It is misfiring but there is no check engine light. I have had it scanned now 6 times and have no codes tha... Dec 10, 2010 · My codes are: P0300 misfire ... 5 psi on a vortec is a huge loss December ... 97-05 Vehicles with 4.8 5.3 5.7 and 6.0 Gen III V8 Engines and Misfires on One Bank - kw ...
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Sep 12, 2012 · Although this case study is about my neighbor's 1995 Chevy Blazer with a CPI equipped 4.3L engine, the info easily applies to any CSFI ‘Spider’ equipped 4.3L, 5.0L, and 5.7L equipped GM vehicle. No Misfire Diagnostic Trouble Codes
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Mar 23, 2013 · I have a 2000 Chevy 2500 with the 6.0 Vortec, the problem is really confusing me beyond belief. The truck runs fine some days, maybe for a week, then all of a sudden its not! The problem comes and goes without any warning! It feels like the engine is missing, I lose power and it barely idols. Going down the road it doesn't have any power, it sort of backfire when you step on the gas. It feels ...
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Aug 14, 2018 · If you have P0300 and one of these other codes, the cylinder indicated by the cylinder specific codes would be where to start looking for your problem. Chevy Silverado P0300 Definition P0300 is a general and random misfire code, which means that the code is not going to tell you which cylinder is causing the misfire. Repetitive squeaking indicates the belt is not running true, and prolonged squealing means that the belt is overheating. This noise is typically caused by a mechanical problem, either a worn auto-tensioner or idler pulley. The Vortec 4.8, 5.3, and 6.0 liter engines have a main accessory drive belt for the water pump, power steering, and alternator. 12 dpo symptoms disappeared bfp
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Oct 11, 2018 · GM Code P0300 Definition. Random/Multiple cylinder misfire detected. Commonly associated with GM codes: P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308; What Does GM P0300 Mean? GM code P0300 indicates that one or more cylinders are experiencing misfires. A misfire occurs when an insufficient amount of fuel is burning in a cylinder.
a Sep 20, 2011 · No, we're going to take the proactive path and do what we have to to fix these issues. - GM High-Tech Performance Magazine Optispark Problem Solve And Fix - Somewhere we should make a joke about ... Jun 29, 2017 · OBD-II detects a problem with your car that could cause your vehicle’s emissions to exceed 1.5 times the legal limit. The trouble code, or diagnostic code, is an alphanumeric value that ... Chevy 5.3 Misfire × Help us help you. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc.) Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more quickly and easily! Sep 27, 2017 · The truck has check engine light , and the code is random misfire (p0300) . I didn't see no vacuum leaks, or any other problem. Until I found the knock sensor dip in water.
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Before you restart the car, clear the codes using an OBD II code reader. If you are getting P0304, the problem is moved to cylinder 4, so the ignition coil is the problem. If you are still getting a P0302 cylinder misfire, that means the problem is not the ignition coil, so we need to continue troubleshooting cylinder two misfires.
Jun 06, 2013 · Random Misfire, and cylinders 2,4,6 misfire. Vue Tech. I guess I read between the lines - I wasn't sure what "random misfire" had to do with misfires on cylinder 2 (P0302), 4 (P0304) and 6 (P0306) but seeing those numbers was a strong clue of an even bank (2) ICM issue. Battlefield 5 modsTo be more specific, 5 years and 100000 miles. Mine is in the shop being repaired as we type this note. As long as it codes #5 cylinder misfire, Chevy will fix it at no charge. .
Sahiwal cattle originP1345 popped up so I turned the distributor a tad counter-clockwise and the code went away. I will have to check the CMP retard with a scanner at a later time and see if its at 0. I took it out for a test drive and its running really smooth. No more random misfire. YAY!!!! My truck has 140K miles on it so I think its doing alright. 2000 chevrolet silverado, misfire on #5 cyl,test says EGR valve, replaced this and no change, replaced plugs, no change, but now test says multiple misfires, ran compression test 75% on 3 cyl. and 71% on the rest, this is a 5.7 liter engine with 160,000,

Pcie 8 pin connectorThere are many reasons why an injector could cause a misfire code. A shorted injector coil that draws too much current, a bad injector driver, an ECM that cuts pulsation to the injector due to an overheating problem to keep the engine cooler and clogged injectors are all possible conditions that will set those persistent misfire codes.
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