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General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

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Old 05-13-2015, 09:36 AM   #1
OverlordFrost
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Join Date: May 2015
Location: England
Posts: 5
My Ride: BMW 320D SE Touring
BMW 320D SE 2002 150BHP "Wagon" - Start Issue

Hello everyone ,

this is my very first formal thread on E46fanatic forum and I am glad to be part of this community.

I'd like to take some time and explain the issue I am having with my BMW, and hope to receive some valuable advise towards the fixture of this issue.

So , about a month ago , on a very ordinary Monday morning I stepped into my vehicle to realise that it will gladly crank , but is a non-starter.

Moving on: Steps that I've taken towards the issue within the last two weeks.
Diagnostics carried out and the code displayed: 4B90 Rail Pressure Control at Engine Start.

Replaced: - DONE !
Fuel Pump / Fuel Filter
NEW filters all around
EGR valve cleaned
NEW - Intercooler (as my previous one was leaking)
Wiring checked
MAF sensor cleaned with "Electrical Contact Cleaner"
Checked fuses (ECU and Glove-box), changed relays. (there is one that instantly blows , I will upload pictures soon to clarify) , but it's not the pump relay nor the horn.

I have happily got rid of the black smoke issues I had before, by carrying out the steps above


Next up: - to DO !
MAP sensor - clean up
Breather change = VORTEX style (bought ,not replaced ,YET).
Swirl flaps = to be cleaned this weekend , but currently waiting on part to arrive"SWIRL FLAP BLANKING PLATES" - to be replaced.

I can get the car started with a "quick start spray" and it will work fine for a long period of time , but when it's really warm and I'm accelerating like a mad man , then the DDE light will switch on and I will lose power.

To all E46's pros , I'll gladly accept any input towards the solution as I am currently learning the engine and applying it in practice. xD

Many thanks.
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Old 06-03-2015, 08:58 AM   #2
OverlordFrost
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Join Date: May 2015
Location: England
Posts: 5
My Ride: BMW 320D SE Touring
Considering no1 has replied , could this kindly be deleted please?
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Old 09-02-2015, 03:52 PM   #3
Thekettle
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Join Date: Sep 2015
Location: Louth
Posts: 1
My Ride: E46 320d msport
Same problem

Hi there I'm having the same problem with my 320 have changed the injectors, diesel pump, blocked swirl flaps ect still no luck was wondering if you got your yoke sorted or any advice
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