Customer questions

BMW 3 (E46) 330 i - Engine Control Module (ECM) - 0045

Customer question from Oct 9, 2016, 5:37:23 PM
symptoms

  • engine stops

Description

intermittent stalling at low revs

Answer from Oct 10, 2016, 7:57:18 PM

Hello , thanks for your question in the autoaid Community.
Your described fault Code means: fuel pump relay
You have to check if the fuel pump runs fine and if there is fuel pressure at the engine.
The fault code means the relay, but when it doesn´t works, then the fuel pump doesn´t runs.
Sometimes there is a faulty contact in the relay and you have to clean, but better, to renew this relay.
What you could check at the relay is the controlling of this. At Pin 30 is the Plus from Battery, at Pin 87 is the Wiring to the fuel pump.
On Pin 85 and 86 is the controlling side, there comes from the ignition/ECU the signal to activate the fuel pump.
Measure this and maybe you could find there an error.

Greetings
Team autoaid

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