Hey All.
I've been trying to track down a pesky, but not too inconvenient problem with my 91 318i. Engine cold start up starts and runs just fine. A couple cranks, smooth idle and I'm on my way.
Warm engine start up. Cranks and starts just fine but then idle hunts around after about 10 seconds. When taking off from the driveway the motor bogs but you can power through the bogging. Power through for about 5 seconds and just like a switch the engine suddenly smooths out and delivers powers normally. Engine idles fine. Any thoughts? Here are a couple things I've done...
Thanks!
Alex
I've been trying to track down a pesky, but not too inconvenient problem with my 91 318i. Engine cold start up starts and runs just fine. A couple cranks, smooth idle and I'm on my way.
Warm engine start up. Cranks and starts just fine but then idle hunts around after about 10 seconds. When taking off from the driveway the motor bogs but you can power through the bogging. Power through for about 5 seconds and just like a switch the engine suddenly smooths out and delivers powers normally. Engine idles fine. Any thoughts? Here are a couple things I've done...
- In line fuel check valve
- New 02 sensor - but didn't check condition of connector pins
- ECU coolant temp sensor
- Fuel pressure (pre rail) doesn't dip when engine is bogging
- ICV cleaned
- No vacuum leaks seem to be present
Thanks!
Alex
Comment