2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

Ignition and injection relay fried

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Old Oct 9, 2011 | 01:52 PM
  #1  
jimmydanny's Avatar
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From: Norway
Ignition and injection relay fried

Hi! in simple terms, I couldn't start my car before (engine blown), now that is fixed, and be darned, I can't shut it off.

Where is the relay that controls the injectors and ignition? I can even give throttle with the key out!
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Old Oct 9, 2011 | 02:02 PM
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From: Central Florida
wish i could remember what caused it on the one car i had an issue with. something with the 2 pin alternator wires crossed with a 12v wire feeding back through the ignition, something along those lines..
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Old Oct 9, 2011 | 02:43 PM
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From: tulsa,ok.
On the back of the alternator lies a two wire plug and the B/W wire needs to be on top of the W/B wire and not vice versa. The Main relay could also be stuck closed. W/the car running w/o the key you could disconnect the two wire plug to the relay and see if the car turns off or not. If it does then the relay is not the problem and if the car continues to run then the relay being stuck in the closed position is likely the problem. The ignition switch could also have a problem. If the plug housing the Black wire and the Black/White wire were unplugged at the ignition switch pigtail and there was still voltage present on the wire which mated w/the B/W wire (coming from the ignition switch itself) then the switch is not operating as it should.
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Old Oct 9, 2011 | 06:44 PM
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From: Norway
Okay, cheers for quick response. I will check it out tomorrow (local time, 01.44 AM here)
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Old Oct 12, 2011 | 03:22 PM
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Okay, fixed it some days ago, but I still got a vac leak, vac is jumping (the engine is compensating for the leak) from -0,6 to -0,4, should be on between -0,8 to -0,6 somewhere. it just all the way when accelerating under 0,5 bar (regular max boost is 0,6 on stock TII S5 engine)
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