Traditional gasoline car fault

1999 Honda Passport P0300 Code: Multiple Misfires, No Improvement After Coil/Injector Swaps

I own a 1999 Honda Passport with a 3.2L V6 engine and am currently experiencing persistent P0300 misfire codes. The vehicle runs poorly at idle but smooths out when revved. I've...

Honda Passport | P0300

2003 Chevy Express 3500 P0154 and P0300 Codes: Check Engine Light at 75 mph+

Hi, I'm new to this forum. My 2003 Chevrolet Express 3500 has been showing a check engine light that activates above 75 mph. The van runs smoothly under normal conditions. - OB...

2003 Chevy Express 3500 | P0154

1997 Chevy Suburban 7.4L P0300 Random/Multiple Cylinder Misfire Diagnosis and Fix

While driving through a heavy rainstorm, my 1997 Chevrolet Suburban with a 7.4L V8 engine began experiencing severe misfires. I initially suspected water ingress, so I continued...

1997 Chevy Suburban | P0300

Buick Regal GS Supercharged - P0303 Misfire at 124,000 Miles: Plug Wire or Coil Issue?

My 1998 Buick Regal GS supercharged vehicle has reached over 124,000 miles and recently triggered the 'Service Engine Soon' light with a P0303 diagnostic code indicating a misfi...

Buick Regal GS | P0300

2001 Pontiac Montana P0300 - Cylinder Misfire Detected: Causes and Fixes

I'm experiencing a P0300 diagnostic trouble code on my 2001 Pontiac Montana, which indicates a cylinder misfire. I'm not sure what could be causing this issue. The engine runs r...

2001 Pontiac Montana | P0300

P0300 Random Cylinder Misfire and Trac Loc/ABS Service Light on 2001 Chevrolet Cavalier

I've been experiencing a persistent P0300 code indicating multiple random cylinder misfires on my 2001 Chevrolet Cavalier 2.4L engine. I recently replaced the spark plugs, but t...

2001 Cavalier | P0300

1996 GMC Sonoma P0175 & P0300 Misfire Fix: Fuel Pressure Regulator Replacement Resolves Issue

I recently resolved a persistent engine misfire issue on my 1996 GMC Sonoma with 168,000 miles. The truck has otherwise been reliable, with only routine maintenance needs like b...

96 4.3L GMC | P0175

2005 Dodge Magnum RT 5.7L with P0300, P0152, and P0175 Codes - Check Engine Light Fluctuates in South Korea

I own a 2005 Dodge Magnum RT with a 5.7-liter V8 engine, currently at just under 50,000 miles. The check engine light has been intermittently coming on and going off—sometimes s...

Unknown | P0152

2001 Audi TT P0300, P0301, P0302 Misfire Diagnosis After Fuel Injector Cleaner Use

I recently replaced the Mass Airflow Sensor (MAF) and air filter on my 2001 Audi TT. At the same time, I added a bottle of fuel injector cleaner to a full tank of gasoline. Sinc...

Audi TT | P0300

2005 Dodge Dakota V6 Automatic 2-Wheel Drive Tow/Haul Issue: P0300 and P0004 Codes Explained

I'm seeking help with a recurring issue on my 2005 Dodge Dakota (37,998 miles) that has been extremely intermittent. The problem occurs randomly—sometimes after 2-3 weeks of no ...

2005 Dodge Dakota | P0004

2000 Toyota Echo P0300 and P0300 (PD) Random Misfire Issue - Rough Idle When A/C Engages

I own a 2000 Toyota Echo with 47,000 miles. The car exhibits a slight rough idle when the air conditioning compressor engages. I was advised by the dealership to perform a tune-...

2000 Toyota Echo | P0300

2004 Lamborghini Gallardo P0300 P1305 P1106 - Meaning and Diagnosis of OBD2 Fault Codes

I'm looking for clarification on what the OBD2 fault codes P0300, P1305, and P1106 mean specifically in a 2004 Lamborghini Gallardo. These codes are appearing in my vehicle's ch...

2004 Lamborghini Gallardo | P0300

2006 Saturn Vue V6 Misfires: P0300-P0306 Diagnostic & Fix Guide

Hi, I'm looking for help with my 2006 Saturn Vue V6 that's showing misfire codes P0300 through P0306. The vehicle was running fine before I replaced the spark plugs, and after r...

2006 Saturn Vue | P0300

2004 Cadillac DeVille P0300 Code: Multiple Cylinder Misfire, Spark Plug & Coil Replacement Failed

I own a 2004 Cadillac DeVille that is currently showing a persistent P0300 code with a flashing check engine light. The vehicle experiences noticeable misfiring and sputtering, ...

2004 Cadillac DeVille | P0300

P0300 97 Subrban 350....

did a tune up, car ran fine for a month, now has a miss and P0300 code.. cylinder #2 has many missfires according to my scanner, thought it was an injector, so I replaced it, st...

97 Subrban 350 | P0300

2003 Chevy Blazer 4.3L Engine P0172 and P0300 Codes: Rich Running, Misfire Diagnosis

My 2003 Chevrolet Blazer with a 4.3L V6 engine and automatic transmission has recently set two diagnostic trouble codes: P0172 (Bank 1 rich mixture) and P0300 (random cylinder m...

2003 Chev Blazer | P0172

2000 GMC Astro Van P0300 Misfire: Fuel Pump Replacement, Cap/Rotor Issues & Coil Diagnosis

At 135,000 miles, my 2000 GMC Astro Van experienced a fuel pump failure. The first replacement was an aftermarket O'Reilly unit, which immediately triggered a P0300 misfire code...

Astro Van | P0300