I am looking through various relays right now trying to find the right ones to purchase. The main relay was pretty simple the replacement is white, 5 prong with the right circuitry inside the relay, however which ones should i buy to replace the 02 heater and the FP relay?
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89 325ix starts then dies
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Originally posted by Kershaw View PostAny 4 prong relay with that blade configuration will work.
I haven't looked at E30's specifically, but BMW sometimes does strange things with relays. The E23 main relay has the NC/NO pins reversed. If you replace it with a standard relay, the DME is powered with the key off and turned off with the key on.
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After some investigation it seems that the previous owner grounded a terminal on the fuel pump relay so that when you turn the key to the ON position the fuel pump primes. I have disconnected that wire and I get no operation of the fuel pump until I try to crank the engine. The only problem is the car still doesnt start. I'm waiting on new relays to come but I have a feeling that they aren't the problem. I was able to find some spare to test some stuff out and I found a White master relay but the car will not actually stay running. Also the DME makes a buzzing sort of sound when I turn the key to the on position so I'm not sure if that means its turning "on" or not.
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Originally posted by nando View PostThe PO pobably fried it with those hack job wire repairs..
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it's not unexpected, though. these are somewhat complex cars, and when they're fixed by people who don't approach it with the mindset of making it work the way it's supposed to, they end up putting botches on top of other botches until it's impossible to understand what it was even supposed to do in the first place. my DD e30 is like that, and I'm still finding crazy stuff in it.
props to OP for taking that on - it sounds like you're trying to put it right.
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