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E30 M3 (1986-1991) {Euro 86-892.3L: 200hp @ 6750} {1990 2.3L Evo2/Cecotto/Ravaglia: 220/215/215hp @ 6750}
{1991 2.5L Sport Evo: 238 @ 7000} {US -- 88-91 2.3L: 196hp @ 6750, 170tq @ 4750}
Total produced: 5,280 US, ~13,300 Europe/world


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Old Mon, Mar-31-2003, 08:18:11 PM   #1
ainsley_brader
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Red face No start problem

ok heres the problem

Chap drives his car in switches it off, I drive it onto the ramp, take the backbox off and weld it up * replace the backbox start it up to see if its blowing at all and after a minute it cuts out and refuses to restart.

Next morning it starts fine runs for a minute then cuts out does this 4 times before refusing to start and it loses its spark from the coil.

Next morning fine for a minute for 2 or 3 trys etc etc been like this for 4 days.


I have traced and checked all connections on the immobilizer (aftermarket) and believe it to be nothing to do with tha.

When it does cut out its not like it runs out of petrol it just stops as though youve turned the key off. Even if you hold it at 3k revs.

I've tested all the relays i can find all click and all have continuity as and when it should.

So anybody??

Oh I have also plugged my snap on/sun diagnostics into it but it refuses to talk to the ECU, furthermore BMW cannot be 100% sure if they will be able to talk to the ECU because its an import.

* new backboxs are only available from BMW or scorpion, bmw want 250 plus VAT, scorpion is a twin DTM at 215 inc but the customer doesnt want DTM so the only other option is a full scorpion system at 500 odd.
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Old Wed, Apr-09-2003, 10:00:42 PM   #2
ainsley_brader
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woohoo


traced it back to 3 dry joints in the ECU resoldered them and everything is fine

Ains
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Discussing No start problem in the E30 M3 (1986-1991) Forum - {Euro 86-892.3L: 200hp @ 6750} {1990 2.3L Evo2/Cecotto/Ravaglia: 220/215/215hp @ 6750}
{1991 2.5L Sport Evo: 238 @ 7000} {US -- 88-91 2.3L: 196hp @ 6750, 170tq @ 4750}
Total produced: 5,280 US, ~13,300 Europe/world at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)