Traditional gasoline car fault

Audi A4 B7 2006 - P0300 Fault: Smooth Drive Below 2000 RPM, Roughness and Choking Above 2000 RPM

I own an Audi A4 B7 from 2006 and am experiencing a P0300 fault. The vehicle runs smoothly below 2000 RPM, but once it reaches this speed, the drive becomes slightly rough and t...

Audi A4 B7 | P0300

P0300 Fault Code After Head Gasket Replacement on 1998 Chevy Silverado 1500 4x4

After replacing head gaskets on my 1998 Chevrolet Silverado 1500 4x4, I'm now experiencing a persistent P0300 fault code. The engine idles roughly and only reaches about 500 RPM...

1998 Chevy with 5.7 | P0300

P0300 Fault on 2003 Chevrolet S-10 4.3L Engine - Misfire Only at Operating Temperature

Hello everyone, I'm seeking urgent help with a recurring P0300 misfire code on my 2003 Chevrolet S-10 4.3L V6 engine. The issue began about a month ago. Previously, around six ...

93 Chevy S-10 4.3 | P0300

P0300 Random Misfire Diagnosis for 2009 Dodge Challenger SRT8 with 60K Miles and Nitrous Mods

I recently encountered a P0300 random misfire code on my 2009 Dodge Challenger SRT8, which has 60,000 miles and includes modifications such as a nitrous system (100-shot setup) ...

2009 Challenger SRT8 | P0300

2004 HUMMER H2 P0300 Code: Diagnosis and Next Steps

Hi, I own a 2004 HUMMER H2 and am consistently receiving the P0300 diagnostic trouble code. I've already replaced the bank 1 oxygen sensor, MAF air sensor, installed new spark p...

HUMMER H2 | P0300

1998 Chevrolet Z71 P0300 P0151 P0174 - Fuel Pressure & Oxygen Sensor Diagnostics

I'm troubleshooting a 1998 Chevrolet Z71 with persistent fault codes P0300 (random misfire), P0151 (oxygen sensor circuit malfunction on bank 1, sensor 2), and P0174 (rich condi...

98 Z71 | P0151

1999 Chevrolet Suburban OBD2 Codes P0172 and P0300: Diagnosis and Fixes

I own a 1999 Chevrolet Suburban and recently started receiving OBD2 diagnostic codes P0172 (Rich Fuel Mix - Bank 2) and P0300 (Random/Multiple Cylinder Misfire). Previously, I h...

1999 chevy suburban | P0172

98 Z71 p0300 p0151 p0174

213k miles. 1,3,5,7 have recorded misfires of 32,9,187,28. 2,4,6,8 have 1446,5433,9046,5351. I know the codes are b2 02 sensor related and multiple misfires. I've watched misfir...

98 Z71 | P0151

2008 Chevy Avalanche 5.3L Engine P0300 Random Misfire Diagnosis and Fix

I've been experiencing erratic idle and sudden activation of the Stabiltrack light and flashing Check Engine Light (CEL) when accelerating hard. The lights disappear when I rele...

2008 Chevy Avalanche | P0300

2004 Mercury Grand Marquis P0300 P0305 P0316 Misfire Diagnosis and Repair Guide

Hi everyone! I'm looking for help diagnosing and fixing these engine misfire codes on my 2004 Mercury Grand Marquis with a 4.6L V8 engine. Vehicle Details: - Year: 2004 - Make:...

2004 Mercury Grand Marquis | P0300

2007 VW Golf City P0300 P0302 P1364 OBD2 Code 01517 - Cylinder Misfire and Transmission Clunk Fix

My 2007 Volkswagen Golf City is showing engine trouble codes P0300, P0302, P1364, and OBD2 code 0157. The P0300 and P0302 codes indicate cylinder misfires, which are commonly ca...

2007 VW Golf City | P0300

P0421 and P0300 Codes on 2003 Mazda Protege - O2 Sensor or Catalytic Converter Issue?

Note: This 2003 Mazda Protege has only 50,000 miles and was purchased from a woman who likely rarely drove it above 45 mph. I initially experienced misfiring in one or more cyl...

2003 Mazda Protege | P0300

2007 Ford F150 5.4L Engine Miss Fire: P0301 & P0316 Codes, Cold Start Issues

Hi everyone, I recently purchased a 2007 Ford F15-0 5.4L V8 4x4 truck three weeks ago. It ran smoothly during the first week of ownership. However, starting about a week after t...

2007 F150 | P0300

2004 Ford Ranger V6 3.0L Misfire Codes P0300, P0301, P0303, P0316 - Troubleshooting Guide

Hi everyone, My 2004 Ford Ranger with a 3.0L V6 engine has been running roughly over the past few days. It occasionally misfires, sometimes runs smoothly, and at other times fe...

2004 Ford Ranger | P0300

2002 Ford Explorer P0300, P0101, P0102, P0103, P0174, P0442, P1131 - Rough Idle, Poor Power, Hesitation at 2500 RPM in Park

My 2002 Ford Explorer is experiencing multiple diagnostic trouble codes: P0300 (random misfire), P0101/P0102/P0103 (mass airflow and oxygen sensor issues), P0174 (rich air-fuel ...

Ford Explorer | P0101

2000 VW Passat 2.8 Engine Codes 300, 304, 305, 306, 0346, 1128, 1129: Causes and Solutions for Gas Fumes and Idle Shaking

I am experiencing a strong gasoline odor, especially during cold starts, along with noticeable shaking at idle. My 2000 VW Passat 2.8 has triggered several diagnostic trouble co...

2000 VW Pasat 2.8 | P0300

2010 Dodge Grand Caravan 4.0L V6 OBD-II Codes P0300 and P0152: Diagnosis and Fix Guide

I'm experiencing two OBD-II diagnostic codes on my 2010 Dodge Grand Caravan with a 4.0L V6 engine: P0300 (multiple cylinder misfire) and P0152 (O2 sensor bank 2, sensor 1 - high...

2010 Dodge Grand Caravan | P0152

P0302 and P0300 Fault Codes on 2006 Dodge Charger 3.5L - Diagnosis and Solutions

At 284,000 kilometers, the vehicle exhibits P0302 and P0300 diagnostic trouble codes despite having fresh spark plugs and good compression readings. Coil pack replacements have ...

06 dodge charger 3.5 | P0300