Why does my Chevy Metro die at idle or run poorly?

Short answer: On a 20-plus-year-old Metro, stalling and poor running is very often a vacuum leak from cracked, brittle vacuum hoses, which are cheap and easy to replace. A dirty idle air control (IAC) valve can make it die at idle, and the EGR valve on these cars is known to clog. If it won't crank at all on a manual, check the clutch pedal switch.

Symptom: It starts but dies at idle and is hard to restart until it cools. Or it runs badly and stalls, and spraying cleaner near the intake brings it back to life. Some won't crank at all.

What to check first

1. Inspect every vacuum hose for cracks and replace old ones one at a time so you don't mix up the routing.
2. Find leaks by spraying near the intake (or passing an unlit propane torch near hoses) while it idles. A change in idle points to the leak.
3. Test the IAC valve: when it's about to stall, lightly press the gas. If that keeps it running, the IAC is suspect; clean or replace it.
4. Check the EGR valve for clogging, and the PCV valve.
5. If it won't crank (manual), check the clutch pedal switch, the battery and the starter connections.

Likely causes

1. Cracked vacuum hoses. Members' top suspect on these old cars; shop replacing the intake gasket didn't fix one.
2. Dirty or failing idle air control valve. Causes dying at idle.
3. Clogged EGR valve. A member said they're known for plugging up.
4. Clutch pedal switch or starter circuit. No crank on a manual.

What it usually costs

No owner in these threads posted a repair cost. One shop replaced the intake and injector gaskets without fixing the problem; members said vacuum lines are cheap.

Is it safe to keep driving?

A car that stalls at idle or when you hit the gas is risky in traffic. Fix it before regular driving. Verify with a mechanic.

DIY or shop?

DIY for nearly all of this. Members describe the Metro as extremely simple to work on, and vacuum hoses, the IAC and EGR cleaning are home jobs.

Recalls, bulletins and complaints in plain words

• Recalls: NHTSA's recall lookup returned an error for the Chevrolet Metro for 4 model-year queries on 2026-10-24, so we couldn't confirm recalls here. Check your VIN at nhtsa.gov/recalls. If your car is part of a recall, the dealer fixes it for free.
• NHTSA complaints: 1 keyword-matched complaints for Chevrolet Metro 1998–2001 (of 12 unique complaints queried, NHTSA complaints API by model year, queried 2026-10-24; keywords: stall, dies, shut off, won't start, no start, cuts out, idle, rough, vacuum, EGR, hesitate). This counts complaints that mention these words. It is not a defect finding.

What owners report

• In 1998 chevy metro that dies at idle on Car Talk, a newly bought '98 started dying at idle and wouldn't restart until it cooled. A member suggested a dirty or defective idle air control valve, and a test: lightly press the gas when it's about to stall and see whether that keeps it running.
• In 98 Chevy metro troubles on Car Talk, a '98 set O2 sensor codes and stalled; new O2 sensors didn't help, and a shop replaced intake and injector gaskets with no change. The engine perked up whenever cleaner was sprayed near the intake. Members said it was a classic vacuum leak, to replace the old vacuum lines, and that the EGR valve on these cars often plugs up.
• In 1998 Chevy Metro will not start on Car Talk, a manual '98 cranked but wouldn't start when dry, then later had no crank at all. Members asked whether it cranks, and one said to check the switch under the clutch pedal that blocks the starter.

Quick tip

Replace the vacuum hoses before anything else. On a Metro it's a few dollars and an afternoon, and it fixes a lot.

Vehicle focus: 1998–2001 Chevrolet Metro (the Geo Metro before it is the same car) with the 1.0L three- or 1.3L four-cylinder.

Safety / mechanic note

Stalling in traffic is dangerous; fix idle problems before regular driving. Verify with a mechanic.