DarHi, I have a bmw325ti compact , it's a 51 plate. The problem I have been having is the engine light has come on and the coolant light. I topped up the system when it was cool and the light has gone but there's seems to be alot of air in the system when I try to bleed it. There was a creamy substance in the oil filler cap, been told many things about that. It had a new radiator and water pump 2 weeks ago. Thanks

I presume you have got oil in the engine. If you haven't checked it, do it now and maybe your coolant levels might give a problem when you spring a leak in the pipework for the rear heater. If you have been losing coolant and have just been topping up the expansion bottle, check that the coolant is up to the full on the cap that is on the engine, (DO NOT OPEN WHEN ENGINE IS HOT) also check your brake fluid level as well, although that would give a different warning

Check coolant level to make sure it is full. Low coolant can cause surging idle. Also, check throttle plate for dirty/coking causing minimum idle to be affected. If throttle plate is dirty, clean with carb cleaner and retest

if the "plate" is on the drivers side front lower side of engine that plate with tube attached is your thermostat and if it is yes your coolant will leak out from it ---other than that you will need to be more specific about the plate

bmw325ti compact 51 plate drivers door lock loose spining with key

Can you give me some more information? Does it run fine if you do not apply the brakes? This could be a failing brake booster and you are loosing vacuum when the brakes are applied....

Try checking the knock sensor and clean the throttle plate inside and out and also the back of the throttle plae, many times the plate sticks from back firing that you can't detect by ear or feel. Also could have a plugged cay.

Fuse Locations & Functions
1. Washer nozzle heaters, glove compartment light (10A).
2. Turn signal lights (10A).
3. Fog light relay, instrument panel light dimmer switch (5A).
4. License plate light (5A).
5. Comfort system, cruise control, A/C, steering wheel module (7.5A).
6. Central locking system (5A).
7. Back-up lights, speedometer vehicle speed sensor (VSS) (10A).
8. Open
9. Anti-lock brake system (ABS) (5A).
10. Engine control module (ECM): gasoline engine (10A)
11. Instrument cluster, shift lock solenoid (5A).
12. Data Link Connector (DLC) power supply (7.5A).
13. Brake tail lights (10A).
14. Interior lights, central locking system (10A).
15. Instrument cluster, transmission control module (TCM) (5A).
16. A/C clutch, after-run coolant pump (10A).
17. Open.
18. Headlight high beam, right (10A).
19. Headlight high beam, left (10A).
20. Headlight low beam, right (15A).
21. Headlight low beam, left (15A).
22. Parking lights right, side marker right (5A).
23. Parking lights left, side marker left (5A).
24. Windshield washer pump, windshield wiper motor (20A).
25. Fresh air blower, A/C (25A).
26. Rear window defogger (25A).
27. Motor for rear windshield wiper (15A). (if equipped)
28. Fuel pump (FP) (15A).
29. Engine control module (ECM) gasoline engine (15A)
30. Power sunroof control module (20A).
31. Transmission control module (TCM) (20A).
32. Injectors: gasoline engine (10A)
33. Headlight washer system (20A).
34. Engine control elements (10A).
35. 12 V power outlet (in luggage compartment) (30A).
36. Fog lights (15A). (if equipped)
37. Terminal (86S) on radio, Instrument cluster (10A).
38. Central locking system (w/ power windows), Trunk light, fuel door, Trunk lid (15A).
39. Emergency flashers (15A).
40. Dual tone horn (20A).
41. Cigarette lighter (15A).
42. Radio (25A).
43. Engine control elements (10A).
44. Heated seats (15A). (if equipped)

Fuse arrangements in fuse bracket/battery:
S162. Glow plugs (coolant) (50A).
S163. Fuel pump (FP) relay/glow plug relay (50A).
S164. Coolant fan control (FC) control module/coolant fan (40A).
S176. Relays panel interior (110A).
S177. Generator (GEN) (90 Amp.) (110A). Generator (GEN) (120 Amp.) (150A).
S178. ABS (hydraulic pump) (30A).
S179. ABS (30A).
S180. Coolant fan (30A).

I Have BMW 325ti Compact E46 2001 model and the eml light come's on and the car just cuts out

Engines are designed with frost plugs that are designed to blow out if the coolant jacket should become frozen. Look carefully using a light and a mirror (ladys compact works well) Following the block heater cord to the engine will help locate these plugs. You may find the block heater has blown loose as it is installed in one of the frost plug holes. Best of luck.