AI-MASTER Knowledge Base

AI-MASTER breakdowns of common faults by make and model.

Fault categories

Engine & fuel system Transmission & gearbox Suspension & brakes Electrics & sensors
Engine & fuel system

Why Your Toyota Camry’s Check Engine Light Flickers and the Idle Goes Rough

If your Camry 70 has a flickering check engine light and a rough idle, it's often a sign of ignition or air/fuel issues. Here’s what to check first and whether it's safe to keep driving.

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Engine & fuel system

Why Your Toyota Camry 70 Stalls After a Cold Start (And How to Diagnose It)

If your Toyota Camry 70 stalls right after starting in winter, it’s usually a sensor or idle control issue. Learn which parts to check first and whether it’s safe to drive.

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Engine & fuel system

Toyota Camry 70 Diesel Power Loss? Black Smoke & EGR/DPF Fix Guide

If your diesel Camry loses power under load and blows black smoke, it's likely a clogged EGR valve or DPF. Here's what to check and if it's safe to drive.

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Engine & fuel system

Why Your Toyota Land Cruiser 100 Stalls After a Cold Start (And How to Fix It)

If your Land Cruiser 100 stalls right after a cold start, especially in winter, it's often a sensor or air/fuel issue. Let's walk through the common culprits and what you can do before calling a shop.

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Engine & fuel system

Why Is My Toyota Land Cruiser 300’s Check Engine Light Flickering and Idle Rough?

If your Land Cruiser 300’s check engine light flickers and the idle feels shaky, it’s usually a sign of a misfire, vacuum leak, or sensor issue. Here’s what to check and whether it’s safe to keep driving.

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Engine & fuel system

Why Your Toyota Land Cruiser 200 Stalls on Cold Winter Starts: Diagnosis and Safety

If your Land Cruiser 200 stalls right after a cold start in winter, the most common culprits are a failing coolant temperature sensor, a dirty idle air control valve, or a weak battery. Learn which parts to check and whether it's safe to keep driving.

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Engine & fuel system

Toyota Land Cruiser 200 Diesel Losing Power Under Load? Black Smoke? Check EGR and DPF First

Is your Land Cruiser 200 diesel losing power when climbing or accelerating, with black smoke? This likely points to EGR or DPF blockage. Learn what to check and if it's safe to drive.

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Engine & fuel system

Why Is Your Toyota Land Cruiser 200's Check Engine Light Flickering and Idle Rough?

If your Land Cruiser 200's check engine light flickers and the idle feels rough, it's often due to a vacuum leak, dirty throttle body, or failing ignition coils. This guide explains what to check first and whether it's safe to drive.

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Engine & fuel system

Why Your Land Cruiser 100 Diesel Loses Power and Puffs Black Smoke: EGR & DPF Fixes

If your Toyota Land Cruiser 100 (diesel) feels sluggish under load and blows black smoke, a clogged EGR valve or DPF is the likely culprit. Here's how to diagnose it and whether you can keep driving.

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Engine & fuel system

Why Your Land Cruiser 100's Check Engine Light Flickers and Idle Runs Rough

A flickering check engine light paired with a rough idle on a Toyota Land Cruiser 100 often points to ignition or vacuum issues. Here's what to check first and whether it's safe to drive.

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Engine & fuel system

Why Your Land Cruiser Prado 250 Stalls on Cold Start — and How to Fix It

If your Prado 250 stalls right after starting in winter, you're likely dealing with a sensor or fuel delivery issue. Here's what to check first and whether it's safe to keep driving.

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Engine & fuel system

Diesel Dilemma: Why Your Prado 250 Loses Power and Belches Black Smoke

Black smoke and power loss under load? Likely a clogged EGR or DPF. Here's what to check and if it's safe to keep driving.

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Engine & fuel system

Why Your Toyota Land Cruiser Prado 250’s Check Engine Light Flickers & Idles Rough

A flickering check light and rough idle often point to vacuum leaks, ignition issues, or dirty sensors. This guide helps you troubleshoot the most common culprits on the Prado 250.

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Engine & fuel system

Why Your Toyota Prado 150 Stalls on Cold Starts – And How to Fix It

If your Prado 150 dies right after starting in winter, here's what's likely wrong (coolant temp sensor, idle air control, fuel mixture) and whether you can keep driving.

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Engine & fuel system

Why Your Prado 120’s Check Engine Light Flickers and Idles Rough

If your Toyota Land Cruiser Prado 120 has a flickering check engine light and a rough idle, you’re likely dealing with ignition or air/fuel issues. Here’s what to check first and whether it’s safe to keep driving.

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Engine & fuel system

Why Your Toyota Prado 90 Stalls on Cold Start (and How to Fix It)

If your Prado 90 dies right after a cold start in winter, the most common culprits are a sticky idle air control valve, a failing coolant temperature sensor, or a weak fuel system. Here's what to check first.

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Engine & fuel system

Why Your Toyota Land Cruiser Prado 90 Loses Power and Blows Black Smoke – EGR/DPF Clogging Explained

Black smoke and power loss under load on your Prado 90 diesel? Likely a clogged EGR or DPF. Here's what to check and whether it's safe to keep driving.

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Engine & fuel system

Why Your Prado 90's Check Engine Light Flickers and Idles Rough

Intermittent check engine light and rough idle on a Toyota Land Cruiser Prado 90? Likely suspects include vacuum leaks, a dirty MAF sensor, or a failing IAC valve. Here's what to check first and whether it's safe to drive.

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Engine & fuel system

Why Your Toyota RAV4 Stalls After Cold Start (Winter Fix Guide)

Engine stalling on cold mornings? We'll explain the most common causes—from dirty throttle bodies to failing coolant sensors—and tell you if it's safe to drive.

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Engine & fuel system

Is Your Toyota RAV4 50 Diesel Losing Power & Blowing Black Smoke? Let's Sort It Out

Black smoke and power loss under load often point to a clogged EGR or DPF. Here's what to check first, which sensors matter, and whether it's safe to keep driving.

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Engine & fuel system

Why Your Toyota RAV4’s Check Engine Light Flickers and Idle Is Rough

Is your RAV4’s check engine light flickering and the idle feeling shaky? Here’s what’s likely wrong, which parts to check first, and whether you can keep driving.

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Engine & fuel system

Why Your Toyota Corolla E210 Stalls After a Cold Start (and What to Check First)

If your Corolla E210 stalls right after starting in winter, the culprit is often a dirty throttle body, a failing coolant temperature sensor, or fuel system issues. Here’s what to check and whether it’s safe to drive.

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Engine & fuel system

Black Smoke & Power Loss: Diesel Corolla E210 – Is Your EGR or DPF Clogged?

If your Toyota Corolla E210 diesel loses power under load and blows black smoke, a clogged EGR or DPF is likely. Learn what to check first and whether you can keep driving.

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Engine & fuel system

Why Your Toyota Corolla E210’s Check Engine Light Flickers and Idle Runs Rough

A flickering check engine light paired with a rough idle often points to intake or ignition issues. Learn what to check first and whether it’s safe to keep driving.

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