Question about 1984 BMW 7 Series

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1984 BMW 733i will run in keyswitch start only, when I scroll the key back to run, the engine will die out, can get the car to run approx. 3-4 seconds longer if I disable the temp. signal. Any suggestions?

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Check fuel pump fuse (red) and fuel pump relay change if necessary

Posted on Apr 24, 2011

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Sounds like the fuel pump is running only while cranking. Check all fuses.

Posted on Apr 23, 2010

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1 Answer

How do I adjust the idle on a 1984 BMW 733i?


I think the IAT ( inlet air temperature) sensor is at fault, check whit with a code reader or scanner

Mar 30, 2013 | 1984 BMW 7 Series

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My 84 bmw 733i will start and run but engine dies as soon as i let go of the key


I had this exact symptom on my 1984 533i. I spent months diagnosing everything but the computer. It was the computer that failed. Actually only part of the circuitry failed and is probably repairable. When the car is cranking it would run. I set up a wire harness that allowed me to shut off the starter motor while I was holding the key in the starter motor position. The car ran just fine. The 533, 633 and 733 all use the computer ending with 008. DO NOT slap in any other computer unless you actually know what you are doing. I tried. And you risk damaging good components, like the donor computer and the injectors.

Jan 22, 2012 | BMW Cars & Trucks

1 Answer

1984 BMW 733i engine idles rough then yesterday engine turns over but will not start , acts like its not getting fuel . Charged battery then tried again noticed backfire from air-flow meter (3)x , this is...


No, get a new fuel pump relay...it is the seven pin tall one under the plastic cover it cost about 30-120.00 $ get it from Autohausaz for cheap

Cheers

Sep 06, 2010 | 1984 BMW 7 Series

1 Answer

My son has a 1984 528E BMW Sedan. He last started it in May, was away until July. In July the car would not start. We have discovered ONLY ONE distributor wire point is sending Spark (Front to Back of...


How did you tell it was only sending spark to # 3 cylinder. Could be bad plug wires or very badly fouled plugs if indeed electrical, or could be an issue with the injectors or fuel system. If not sure. One quick way to test is get an inductive timing light to see if you have a spark pulse on each wire. Please give me more infor and I'll see how to help.

Aug 29, 2010 | 1984 BMW 3 Series

1 Answer

Bought a 1984 BMW 733i and the master key works on the trunk, as it should, but neither the ignition key (works in ignition only) nor the trunk key will lock the car doors. What's up?


u need to go to the deal ship it 57 buks for a new codit master key i need two spider gears for the rear end and the dealer dont have them whats up

Aug 17, 2010 | 1984 BMW 7 Series

1 Answer

No spark on a 1984 BMW 733i 3.2 litre good computer all it does is crank good cranksensor


Have you checked for spark out of the spark plug wires and out of the coil wire? Also, I would recommend checking for battery voltage at the coil. If your crank sensor and engine electronics (DME) are ok, I would suspect the secondary ignition components. Also, don't rule out a bad rotor button or cap. Make sure you do not have any oil inside the distributor cap.

Mar 13, 2009 | 1984 BMW 7 Series

2 Answers

Engine rotates but will not start


Check your crank position sensor and its connections!

Sep 27, 2008 | 1984 BMW 7 Series

1 Answer

1984 733i repair manual


5 Series Haynes is OK.

What are you working on?

a.l9609@gmail.com

Jun 03, 2008 | 1984 BMW 7 Series

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