Why does my Peugeot 206 stall on a cold start or run hot?

Short answer: Cold-start stalling with slow throttle response on a 206 often comes down to dirty grounds, the idle stepper motor or a weak sensor, after fuel pressure and the throttle body check out. A temperature of about 100 C before the fan comes on can be normal. A fuel leak on top of the tank is not something to drive with, because it's a fire risk.

Symptom: The engine stalls or hesitates for the first 10 minutes after a cold start, the gauge climbs to 100 C before the fan runs, or you smell or see fuel near the rear of the car.

What to check first

1. Have the fault codes read with a scanner that works on Peugeots.
2. Clean and tighten the engine and battery ground connections.
3. Check the plugs on the idle motor, cam sensor and oxygen sensor.
4. Watch the gauge. If it reaches 100 C, the fan comes on and it then drops, that's likely normal. If it keeps rising, stop.
5. For a fuel smell, look at the top of the tank and the lines for wetness.

Likely causes

1. Poor ground or sensor wiring connections. Corroded engine grounds and loose plugs on sensors make the engine computer see bad readings, so it runs poorly until warm.
2. Idle control (stepper) motor or its wiring. A small motor sets the idle speed. If it or its wiring is bad, the engine can stall when cold.
3. Camshaft or oxygen sensor. These sensors tell the computer engine position and exhaust mix. A weak one can cause rough cold running.
4. Normal fan behavior. On this car the fan may not switch on until about 100 C. That can be normal if the temperature then holds steady.
5. Damaged fuel line on top of the tank. A kinked or cracked plastic line on top of the tank can leak fuel. The tank must come down to replace it.

What it usually costs

Owners in these threads didn't post prices.

Is it safe to keep driving?

A fuel leak is a fire hazard. Don't drive until it's fixed. Stalling in traffic is risky, and a temperature that keeps climbing past normal can damage the engine.

DIY or shop?

Grounds, plugs and code reading are DIY. Sensor work is often DIY. Dropping the tank to replace the fuel line is best done by a shop.

Recalls, bulletins and complaints in plain words

• Recalls: The Peugeot 206 was never sold in the US, so NHTSA has no recall or complaint data for it (its lookup returned no data for 2000-2004 on 2026-10-29). Check recalls with your country's official recall service or a Peugeot dealer using your VIN. Recall repairs are normally done free by the dealer.
• Plain words: The complaint count below shows how often owners reported problems that mention these words to NHTSA. A count is not proof of a defect.
• NHTSA complaints: 0 keyword-matched complaints for Peugeot 206 (not sold in the US) 2000–2004 (of 0 unique complaints queried, NHTSA complaints API by model year, queried 2026-10-29; keywords: start, stall, fuel, leak, overheat, temperature) (NHTSA returned no data for 10 model-year queries). This counts complaints that mention these words. It is not a defect finding.

What owners report

• In Peugeot 206 cold start problem on Car Talk, a 2003 206 1.4 stalled on cold starts and had delayed throttle response for about 10 minutes. Fuel pressure was fine and the throttle body had been cleaned. Members suggested cleaning the harness grounds and checking the oxygen sensor, the idle stepper motor wiring and the cam sensor. The thread didn't post a final fix.
• In Peugeot 206 engine heat is reaching 100 degree's on Car Talk, a 206 owner saw the temperature reach 100 C before the fan came on. Members said that's within the normal range the manual gives (about 90-100 C). The owner replaced the thermostat anyway.
• In 2005 Peugeot 405 - Leaking fuel on Car Talk, a 206 owner (the thread title says 405) had a fuel leak from a kinked green line on top of the tank. Members said to drop the tank and replace the line, and called it a fire hazard to drive.

Quick tip

Before buying parts for a cold stall, clean every ground you can find. It's free and it fixes more of these than people expect.

Vehicle focus: Peugeot 206 hatchback (petrol), 1998-2010. Not sold in the US.

Safety / mechanic note

Fuel leaks and stalling are safety items. Verify with a mechanic.