P0300 chevy tahoe 2007

Apr 3, 2019 · #Chevy #Vortec #Misfire #RandomMisfireChevy Vortec Multiple Misfire Code P0300 - Cheap Fix (Crankshaft Sensor Relearn)Here's a way to possibly solve a random...

Aug 20, 2018 · I'm having a very similar issue, but my codes are on the left bank and yours are on the right bank. Same symptoms ran perfect one second, then stalled. I was able to restart and limp home. Suddenly power seemed fully restored, but shortly I was misfiring again. Any Ideas? I have codes: P0134, p0300, p0351, p0353, p0355, P0357, P1133. Thanks Apr 26, 2021 · On a Chevy or Dodge V8, the cylinders are numbered 1-3-5-7 on the driver side bank and 2-4-6-8 on the passenger side bank. Four cylinder inline engines are numbered 1-2-3-4 beginning on the timing belt end of the engine. This information is important, but has little to do with a P0300, which doesn’t specify a particular cylinder. Hello. I am having issues with a 2005 Tahoe 5.3. The truck starts and runs fine for a few minutes and then out of the blue it will throw p0300 and randomly misfire. The truck will misfire for a few minutes and then run perfectly fine after. If I watch the misfires I'm live data when this occurs, it shows cylinders 2 and 7 misfiring.Failed or Faulty Oxygen Sensor (bank 1, sensor 1) Sticking/Plugged or Failed Fuel Injector. Low Fuel Pressure (possible plugged/dirty fuel filter!) Exhaust Leak between Engine and first Oxygen Sensor. Possible Solutions: A lot of Times, Cleaning the MAF Sensor and Finding/Fixing Vacuum Leaks fixes the Problem.2004 Tahoe LT 2WD 5.3 Z. Non DOD. Non EGR Valve. 210K Miles. First Owner - kept all maintenance up-to-date. Replaced Throttle Body 1 year ago. No issues. Started getting P0300 code 3 months ago. Idles a little rough, but does not stall or stumble during acceleration.

November 25, 2022 by Jason. P0401 is a very common OBDII trouble code that'll pop up in the Chevy Tahoe. It has to do with the emissions system and stands for Exhaust Gas Recirculation (EGR)→ Insufficient Flow. The EGR system in your vehicle is responsible for recirculating exhaust gasses in order to lower the vehicle's emissions output.07-14 5.3 AFM Lifter Replacement. P0300 P0301 P0304 P0306 P0307Fix! Silverado,Tahoe,Sierra,Yukon, Suburban,Avalanche this video was from a 2014 suburban with...On V6/V8/V10 engines, Bank 1 is the side of the engine that has cylinder #1. The P0171 is one of the more common trouble codes. This code is triggered by the first downstream (front) O2 sensor. The sensor provides a reading of the air:fuel ratio leaving the engine's cylinders, and the vehicles powertrain/engine control module (PCM/ECM) uses ...44.1K subscribers. 490. 48K views 8 months ago. ...more. How to troubleshoot and fix a Chevrolet P0300 engine code: Engine Misfire DetectedAmazon …Mar 21, 2017 ... The last round of codes were P0175,P0455,P0300,P0307. We are at a loss. I love this car but I cannot spend shops prices anymore. Looking for ...Jul 16, 2021 ... You may get engine trouble code (MIL Light) P0300 which is a "Random Misfire Code". Today we're going to go over a simple fix which may be ...

74 posts · Joined 2012. #5 · Dec 25, 2012. If its early enough to have a fuel pressure regulator on the rail, pull the vacuum hose off the reg and see if fuel is present. If it is replace the reg. A plugged cat usually has some detonation, runs rich and lays down at higher rpm. They usually have an odd vacuum cleaner like sound at high rpm also.It indicates that your Chevy Tahoe is running lean on the bank two side of the engine. P0174 and P0171 (fuel trim lean bank one) are the most frequently seen air/fuel mixture-related codes. ... You may also get P0300 or P030X (X being the missing cylinder, which should be an even number). ... I have a 2007 h3 hummer base model. Had transmission ...Tahoe hybrid chevrolet chevy battery 2009 2007 p0496 cells cars generation warranty suburban deer 2008 months prices rebuilt car symptoms2006 chevy hhr under powered engine. code p0121, p0300, p0340, p2176 P0496 chevy tahoe: evaporative emission system high purge flow.in this video I will share with you how to test a fuel injector circuit...#Injector #codeP0200 #fuelinjectortestingChevy tahoe 2006 with code (p0300) part 2P0300 misfiring hyway speeds engine code forum edited pm last Tahoe p0300P0300 misfire in all cylinders 2001 tahoe. P0300 code, engine misfiring at hyway speedsP0300 misfire chevy random 2007 cylinder multiple silverado How to diagnose and fix fuel injector problem, chevrolet tahoe p02082005 chevy tahoe ...

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Mar 28, 2015 · Check engine light and got a p0300 code in a 2007 tahoe. the p0300 code is misfire dectected on you engine. check for the misfire using scanner tools. I have a 98 chevy silverado with 5.7 vortec. Engine light flashing runs rough has code P0300, & P1404. Changed plugs, wires, dist. cap & rotor, egr & o2 sensor. Aug 26, 2007 · A code P0300 may mean that one or more of the following has happened: Faulty spark plugs or wires. Faulty coil (pack) Faulty oxygen sensor (s) Faulty fuel injector (s) Burned exhaust valve. Faulty catalytic converter (s) Stuck/blocked EGR valve / passages. Faulty camshaft position sensor. November 25, 2022 by Jason. P0401 is a very common OBDII trouble code that'll pop up in the Chevy Tahoe. It has to do with the emissions system and stands for Exhaust Gas Recirculation (EGR)→ Insufficient Flow. The EGR system in your vehicle is responsible for recirculating exhaust gasses in order to lower the vehicle's emissions output.The SES light came on so I checked the code and it was a cylinder 2 misfire. After checking spark I knew it was a fuel issue so I stopped by the auto parts store and got a injector and a intake seal kit. After I got everything back together the truck was running worse then it ever has and the code I had now was p0300 random multiple cylinder ...

Car shoppers, take note: The Chevy Volt has received a $4,400 price cut amid low sales and a new model. By clicking "TRY IT", I agree to receive newsletters and promotions from Mon...4'th Cylinder. P0304 is a cylinder-specific misfire code, meaning only your Tahoe's fourth cylinder has a misfire. Before you can even diagnose P0304 in your vehicle, you need to find the fourth cylinder's location. On "V" configuration engines, it'll usually be the second cylinder on the head further away from the front of the engine.Aug 14, 2018 · P0300 is a generic OBDII code that can occur with the Chevy Silverado. This code indicates that your truck’s engine is misfiring and can be a drivability threat. P0300 is often accompanied by cylinder-specific misfire codes (P030X, where the X indicates the cylinder number that is misfiring). If you have P0300 and a cylinder-specific misfire ... To put it simply, this code means that one of the cylinders in your vehicle misfired and that the misfire was detected and reported by your car's computer. P0300 is vaguer than other misfire codes and doesn't provide any insight on which one of the cylinders might have experienced the issue. If you get a P030­_ code with a number other ...My Yukon SES light is on and I had the auto parts store run the code, P0300, multiple misfire. I've read pages and links about what it could be and nothing is definitive. So, wondering if anyone has experience with this and some advice. Truck has 270k and I keep it well maintained. Some of what I've read is vacuums leak, EGR valve or bad Cat's.2000 - 2006 Tahoe/Yukon/Escalade Models. Engine & Drivetrain . The dreaded P0174! Thread starter Martinjmpr; Start ... I fixed a p0300 and p0174 code (random multiple misfire) and bank 2 to lean the p0174 code was caused by my fpr on the fuel rail replaced that and it solved my p0174 problem .Anytime a code you will loose traction control. Will not get traction control back till you fix the problem . Tps is not serviceable have to replace the throttle body. One good thing you get message misfire#7 try swapping coils with another cylinder. see if misfire goes away on #7 ..may also be the injector.Vacuum leak. Malfunction of the oxygen sensor. Burnt exhaust or intake valve. Defective catalytic converter. A defective throttle position sensor. Faulty PCM. Leakage of the head gasket. How serious is the P0300 Code? Medium – The code p0300 is triggered because of misfires on any cylinder.I have a 2007 chwcy tahoe and its throwing a few codes c0561 p0300 p0171 and I have no clue where to start. To both - Answered by a verified Chevy Mechanic ... Hi I have a 2007 Chevy Tahoe, 5.3 liter,***** 141500 miles on it. This past Thursday, the traction control light came on, lost power, runs rough, now in limp mode.

These codes have a number at the end that refer to a specific cylinder. Here are some common engine misfire-related codes: P0300 - Random or Multiple Misfire Detected. P0301 - Cylinder 1 Misfire Detected. P0302 - Cylinder 2 Misfire Detected. P0303 - Cylinder 3 Misfire Detected. P0304 - Cylinder 4 Misfire Detected.

2004 silverado 5.3 random misfire p0300 code. Need help ,changed plugs and wires, intake gasket vacumn lines , pulled compression on all cylinders ( 125 to 138) random miss on cylinder 6 at idle than runs fine above 2000 rpm. You could have a ignition coil that is faulty. Try moving that number 6 coil to the number 2 coil position to see if the ...P0132 is a common OBDII code that occurs in many vehicles, including the Chevy Tahoe. The code is triggered when: The voltage at the sensor remains above threshold for 20 seconds or more. The air fuel sensor stays in rich biased mode for too long. There are also some less likely problems that can.1. Worn Cam Lobe and/or Lifter Roller: Generally, a worn cam lobe on this engine family will create a consistent chirp, squeak, squeal or tick noise at camshaft speed and/or a misfire with a P0300-P0308 DTC. The misfire may or may not be felt and the misfire could occur at all RPM or just a specific RPM, such as idle only or only at high RPM.Tahoe hybrid chevrolet chevy battery 2009 2007 p0496 cells cars generation warranty suburban deer 2008 months prices rebuilt car symptoms2006 chevy hhr under powered engine. code p0121, p0300, p0340, p2176 P0496 chevy tahoe: evaporative emission system high purge flow.2003 Suburban 5.3 with 200k miles. On vacation this past weekend and I start feeling a slight miss fire, driving the 20 or so miles to get back home and it gets worse and worse till its very noticeable and constant when driving. The next day I buy a scanner and its showing these three codes. P0300, P0134, P0135.P0300 misfire chevy random 2007 cylinder multiple silverado. The only code is p0300P0300 misfire gm 3l Chevy silverado gmc sierra p0300 diagnosis and repairP0300 gmc yukon misfires p0352 silverado tahoe sparkys. Sparky's answersCode chevy p0300 2001 blazer P0300 fault code 02 silverado 4x4 5.3 vortecP0300 code update! fixed! (2001 chevy blazer ...2007 - 2014 Tahoe/Yukon/Escalade Models. Engine & Drivetrain . P0304 P0443 white smoke misfire 07 Tahoe 5.3 4x4 ... Any and all advise appreciated I'm at my witts end. Live in Lee county AL if anyone lives close by. 07 Chevy Tahoe 5.3 4x4 Sent from my iPhone using Tapatalk . Apr 2, 2020 #2 OP . OP. Jps0039 Member. Joined Apr 2, 2020 Posts 32

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Tahoe chevy codeChevrolet tahoe 5.3 lean p0171, p0174, and p0300 Tahoe chevy chevrolet p0440 code stabilitrak p0442 service summit background gm symptoms iridescent tricoat pearlTahoe lean p0300 p0171. P0300 silverado idle coldChevy gmc code p0300 and p0200 P0300 codes p0172 p0175P0300 tahoe chevrolet 2001 4wd port fix scan. I have P0172, P0175 ...hello guys i have a 07 tahoe LT non flex 5.3. And im having a issue diagnosing this lean issue i have on the left bank i changed the intake gasket checked coil packs and swapped out MAF sensors oh and i checked the compression and its good and the fuel psi was 45 with the key on engine off and I can see the needle bleeds off to about 30 psi but the truck starts right up oh and it has a slight ...A quick & complete video for a Chevy Suburban (2005) - how-to replace an oxygen sensor i- Codes p0171 & p0300Buy part here:Denso 234-4668 Oxygen Sensorhttp...The SES light came on so I checked the code and it was a cylinder 2 misfire. After checking spark I knew it was a fuel issue so I stopped by the auto parts store and got a injector and a intake seal kit. After I got everything back together the truck was running worse then it ever has and the code I had now was p0300 random multiple cylinder ...Your Chevy Tahoe's service engine soon light is there to let you know that some sort of problem has been detected with the vehicle. Any vehicles made in 1996 or newer use OBDII codes, which can easily be retrieved from a good code scanner. ... such as P0300, P0171, P0420, etc. There are plenty of great articles and videos out there online to ...Do not use seafoam you will only create more driveability issues. You have to find the cause of p0304 . Check your coil, 4 injector connector, and remove the 4 plug. Check the ignition wire , and check inside 4 cylinder to see if any issues with piston , debris , anything. Switch coils and see if the misfire jumps. Same with ignition wite.Aug 20, 2018 · I'm having a very similar issue, but my codes are on the left bank and yours are on the right bank. Same symptoms ran perfect one second, then stalled. I was able to restart and limp home. Suddenly power seemed fully restored, but shortly I was misfiring again. Any Ideas? I have codes: P0134, p0300, p0351, p0353, p0355, P0357, P1133. Thanks Hey everyone, I have an 05 tahoe, t vin 5.3 w/o egr system with a p0300. The misfire is happening at idle, then goes away completely over 1200 rpm. Bank 1 is leaning out, and ltft b1 reads high at idle and drops when driving. Here's my freeze frame: Fuel Status = 0 byte Engine Load = 19.608 % Engine Coolant Temperature = 197.6 °F ….

Jun 26, 2020 ... So, you are faced with diagnosing a stored a code P050D. It means that the powertrain control module (PCM) has detected a rough engine idle ...The P0300 code is a diagnostic trouble code (DTC) that indicates a random or multiple cylinder misfire has been detected in the engine. This code is often accompanied by other misfire codes, such as P0301, P0302, P0303, P0304, P0305, P0306, P0307, or P0308. A misfire occurs when the fuel in a cylinder fails to ignite properly, causing the ...Chevy tahoe p0304 p0306Afm lifter p0300 suburban tahoe 2007 5.3l chevy lifters p0300Chevy tahoe misfire problem fixed code p300. Random multiple misfire - Lemainal. Check Details. 2001 chevy tahoe p0300 cylinders 1 and 6 at high speed. Code chevy p0300 2001Random multiple misfire - lemainal P0300 2007 tahoe chevyP0300 chevrolet code trouble ...GM P0300 Causes (* = Most Common) Faulty or worn spark plugs * Faulty spark plug wires or coils * Distributor failure * Faulty fuel injector * Vacuum leak; Low fuel pressure; Camshaft sensor defective; Crankshaft sensor defective; Engine timing off; Leaking head gasket; Low engine compression; Poor quality fuelChevy Mechanic: Dan. This most likely means timing chain stretched, tensioner not working properly, or worn guides. I'd recommend replacing complete kit. This is around a 7 hour job book rate and around $1000-$1200 total at a shop.The P0300 code means that a cylinder (s) is misfiring or is randomly misfiring. Start by checking for intake leaks, intake gaskets are a common cause of multi …Jun 26, 2020 ... So, you are faced with diagnosing a stored a code P050D. It means that the powertrain control module (PCM) has detected a rough engine idle ...Tahoe chevy codeChevrolet tahoe 5.3 lean p0171, p0174, and p0300 Tahoe chevy chevrolet p0440 code stabilitrak p0442 service summit background gm symptoms iridescent tricoat pearlTahoe lean p0300 p0171. P0300 silverado idle coldChevy gmc code p0300 and p0200 P0300 codes p0172 p0175P0300 tahoe chevrolet 2001 4wd port fix scan. I have P0172, P0175 ...The P0430 code in a Chevy Tahoe will often be thrown if one of your vehicle's oxygen sensors is not functioning correctly. ... (such as P030X, where X is the misfiring cylinder) or P0300 (random multiple misfiring), it can cause the catalytic converter to overheat, which decreases its efficiency and throws ... I have a 2007 h3 hummer base ...A P0300 diagnostic code indicates a random or multiple misfire. If the last digit is a number other than zero, it corresponds to the cylinder number that is misfiring. A P0302 code, for example, would tell you cylinder number two is misfiring. Unfortunately, a P0300 doesn't tell you specifically which cylinder(s) is/are mis-firing, nor why. P0300 chevy tahoe 2007, 2007 chevy tahoe: drove 2 miles after sitting for a week and started misfiring . Dash lit up including stabilitrak warning. Codes are P0300 random multiiple misfire, P0154 O2 sensor no activity bank 2 … read more, 151 posts · Joined 2008. #1 · Mar 18, 2015. Just thought I'd post my most recent experience with my new (to me) 06 Tahoe since I had a hard time finding information on this issue here. Two weeks after purchasing this vehicle we began experiencing very hard starts in the morning and then throwing code P0172 and P0175 (rich condition bank 1 and 2)., 07-14 5.3 AFM Lifter Replacement. P0300 P0301 P0304 P0306 P0307Fix! Silverado,Tahoe,Sierra,Yukon, Suburban,Avalanche this video was from a 2014 suburban with... , Check Engine Light with a P0300 due to 2 - 4 cylinders misfiring on the same bank of the engine. DTCs P0171, P0172, P0174 or P0175 may also set for the misfiring bank. Perform a fuel injector balance test for all 8 cylinders. If a fuel injector concern exists, it is possible to misfuel an entire bank of the engine, causing multiple cylinders on ..., There are many potential causes of code P0014. Some are easy to check and correct yourself, such as old engine oil, or not having enough oil in the engine. Other causes are more complicated, such as malfunctioning components in the variable valve timing system itself. Engine oil is dirty. Engine oil is too low. Engine oil is incorrect viscosity., Feb 17, 2022 · 2007 Tahoe 5.3. Misfire 5 and 6. Fuel good. Fire good. Compresión good. Answered in 5 minutes by: Chevy Mechanic: Randall J. Hi, my name is Randall. I’ve been a Master Technician for 39 years and and expert with Justanswer since 2008 I will do my best to help you today I'm sorry to hear you are having difficulties with your vehicle. , Support My Channel! Paypal - [email protected] / Cashapp - $cdarnauParts NeededComplete Set & Kit - https://amzn.to/2XT9D9y OrAFM Lifter - https://amzn.to/2LFZ..., The code P0300 indicates there are repetitive misfires on one or more cylinders in your car. You will often find this code together with another code of the specific cylinder the misfire occurred on. If the last digit of the trouble code is not zero, e.g., if the generated code is P0302, the number 2 indicates that cylinder number 2 has a misfire., A P0300 OBD DTC code indicates a random or multiple misfire. If the last digit is a number other than zero, it corresponds to the cylinder number that is misfiring. A P0302 code, for example, would tell you cylinder number two is misfiring. Unfortunately, a P0300 doesn't tell you specifically which cylinder(s) is/are mis-firing, nor why. Symptoms, Feb 15, 2021 · I have a 07 Tahoe 5.3l that recently had issues with oil pressure, stabilitrak, low oil pressure shut off engine errors, p0621, p0300, and p0304 codes. I started replacing the MAF, TB, and Spark plugs & wires. After the spark plug and wires I developed a knock couple days later. I since then... , Finally got the catastrophic Stabilitrak Disabled Warning, and then a huge loss in engine power. Checked it with the code reader and found P0300. Limped it to the dealership and left it there after hours. Did a key drop and a crude description of the problem. I read the boards all night, but I could not come up with a convincing culprit., alright guys i just installed new injectors (OEM) and now my truck has a random cylinder misfire (P0300) under hard acceleration and at idle sometimes, I've heard that it could be fixed with a camshaft position sensor relearn but i'm not exactly sure and honestly i don't have the money to throw parts at it., Chevy tahoe p0300 obdii code diagnosis Chevy p0300 tahoe obdii occurs P0174 code toyota. P0300 code, engine misfiring at hyway speeds - Page 2 - Blazer Forum. P0300 tahoe chevrolet 2001 4wd port fix scan 2001 chevy tahoe p0300 cylinders 1 and 6 at high speed P0300 chevy misfire cylinder random silverado multiple 2007 p0171. P0300 tahoe obdii ..., Tahoe p0449 P0300 misfire in all cylinders 2001 tahoe 2007 5.3l chevy lifters p0300. Chevy Tahoe P0300 OBDII Code Diagnosis | Drivetrain Resource. 2001 chevy tahoe p0300 cylinders 1 and 6 at high speed Chevy tahoe p0440: evaporative emission control system malfunction I have a 2007 chevy suburban 5.3liter with a misfire in cylinder 4., This video addresses a very common problem with GMC, Chevrolet 5.3 liter smoking out of the tail pipe on cold start. This is a very simple and low dollar fi..., Diagnostic Trouble Code (DTC) P0060 stands for "HO2S Heater Resistance Bank 2 Sensor 2.". It's logged once the PCM detects a potential fault in the heater circuit of the downstream oxygen sensor (Sensor 2) that's located in Bank 2. Bank 2 refers to the side of the engine that doesn't contain cylinder #1., 2007 chevy tahoe: drove 2 miles after sitting for a week and started misfiring . Dash lit up including stabilitrak warning. Codes are P0300 random multiiple misfire, P0154 O2 sensor no activity bank 2 … read more, 2000 - 2006 Tahoe/Yukon/Escalade Models. Engine & Drivetrain . 1,200 Mile Road Trip - P0171 / P0174 / P0300 Engine Codes ... This time it is a P0300 - Random/Multiple Cylinder Misfire Detected. I hadn't noticed any change in the engine before the CEL came on. Again, I cleared it and drove the rest of the way home and the P0300 did not return., 2007 - 2014 Tahoe/Yukon/Escalade Models. Engine & Drivetrain . AFM Issues P0300 - This may help you. Thread starter RAFJR; Start date Jan 4, 2021; Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. ... P0300 Code and Oil pressure gauge erratic or non responsive 2. Replaced oil pressure sensor ..., 1999 chevy tahoe misfire code p0300. Thread starter andre912; Start date May 17, 2014; Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission. May 17, 2014 #1 A. andre912 TYF Newbie. Joined, These codes have a number at the end that refer to a specific cylinder. Here are some common engine misfire-related codes: P0300 - Random or Multiple Misfire Detected. P0301 - Cylinder 1 Misfire Detected. P0302 - Cylinder 2 Misfire Detected. P0303 - Cylinder 3 Misfire Detected. P0304 - Cylinder 4 Misfire Detected., Yesterday on the way to work my 2000 Chevrolet Silverado 1500 4WD with the 4.8L V8 Vortec engine started flashing a check engine light. I read it and it was a P0300 Random/Multiple Misfire. I had experienced a slightly rough idle previously (nothing serious) and had been unable to track it down., 2007 - 2014 Tahoe/Yukon/Escalade Models. Engine & Drivetrain . P0300 code. Thread starter Pitterpat; Start date ... Autozone checked the code and it was P0300. What my Auto place said they have had success with doing is running the engine clean stuff through it from Valvoline. Yes, I trust them, I've been going to the same place for 30 years ..., For p0300 ,p0240 on chevy tahoe 00- 06 check a wire going along with the battery ground to the engine block thre should be a high resistence on the small wire ,it gets corrode over time ,it should be located on underneath of the driver side engine, ... 2007 Chevrolet Tahoe. Tahoe won't start. 2000 Chevrolet Tahoe. Chevy tahoe shuts off when ..., Sep 10, 2021 ... GMC TRUCK - P0300 ERROR - ROUGH IDLE - EASY FIX ✨ How to use Seafoam gas additive Injector cleaner. Click here to order your Seafoam gas ..., 2004 silverado 5.3 random misfire p0300 code. Need help ,changed plugs and wires, intake gasket vacumn lines , pulled compression on all cylinders ( 125 to 138) random miss on cylinder 6 at idle than runs fine above 2000 rpm. You could have a ignition coil that is faulty. Try moving that number 6 coil to the number 2 coil position to see if the ..., This article will therefore deal with code P0300 as it applies specifically to GM vehicles. OBD II fault code P0300 is a generic trouble code that is defined as "Random/multiple cylinders - misfire detected" and is set when the PCM (Powertrain Control Module) detects misfires on random or multiple cylinders. Note that while the PCM has ..., I could use some help from the group. I’m getting the P0300 misfire code with a rough idle and seems to be dumping fuel in the right bank. Ive done a significant amount of work with no results. - pulled heads and replaced AFM lifters and trays. Old lifters showed no damage. New valve seals and..., 74 posts · Joined 2012. #5 · Dec 25, 2012. If its early enough to have a fuel pressure regulator on the rail, pull the vacuum hose off the reg and see if fuel is present. If it is replace the reg. A plugged cat usually has some detonation, runs rich and lays down at higher rpm. They usually have an odd vacuum cleaner like sound at high rpm also., 07-14 5.3 AFM Lifter Replacement. P0300 P0301 P0304 P0306 P0307Fix! Silverado,Tahoe,Sierra,Yukon, Suburban,Avalanche this video was from a 2014 suburban with..., Alpharetta, GA. I've got a friend with a 1999 Tahoe with a 5.7 equipped with the stock SFI system. About two weeks ago, the vehicle began to misfire and illuminated the CEL. It is throwing a p0300 Random Misfire code. We hooked it up to the computer with my scan tool and saw a lot of misfires. The misfire count seems to be increasing faster on ..., Jul 16, 2021 ... You may get engine trouble code (MIL Light) P0300 which is a "Random Misfire Code". Today we're going to go over a simple fix which may be ..., The FIXD wireless OBD2 scanner and free app for iPhone and Android translates your check engine light into plain English so you can rest easy. In this video,...