Question on E30 Idle speed troubleshooting
 

hi pelican I have bmw e36 318i 4 cylinder m42 car,the problem is after start engine within within 5 sec engine automatically stop.if i push throttle after start abt 1000rpm abt 2min then only idle stable 900rpm.can i give me any answer for this...thanks

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This post was auto-generated based upon a question asked on our tech article page here: BMW E30 3-Series Idle Speed Troubleshooting (1983-1991) | Pelican Parts DIY Maintenance Article

Sounds like you have a vacuum leak. Check the intake system for leaks, and don't forget to check the rubber boot for the mass airflow sensor.

- Casey

The running joke in the car business was

if you had a used BMW on your lot and the "Check Engine Light" was not on; it was because it was broken

You can smoke test the system or have a shop do it for you if you don't have a unit. Can use this site to help you find an indy shop that can perform the test: https://www.bimmershops.com/