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87 S4 Ignition Problem

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Old 08-04-18, 12:28 AM
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87 S4 Ignition Problem

I am having an intermittent problem when turning the ignition off, about 50% of the time the engine stops the other 50% it just continues running and I have to either stall it out or quickly flick the ignition back to start and then off. I have removed the turbo timer and it was not the problem. The car has been modified with the starter relay mod, before that I was getting the click click when trying to start.
The car is a JDM 87 turbo.
Hopefully someone has some good suggestions for trouble shooting. Thanks


pic of the car
Old 08-04-18, 08:56 AM
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When did you start having this problem? Was it after the starter relay mod? If so, than I would suspect that the mod is the problem. If not, than I would suspect that the ignition switch harness (https://www.rockauto.com/en/moreinfo...192340&jsn=356) is the problem.
Old 08-04-18, 06:36 PM
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I didn't notice the problem when I bought it, but I did the relay mod just after I bought it. I will have a look at the ignition switch harness, is it possible that there is a sticking relay in the start circuit that does not release some times?
Old 08-05-18, 10:26 AM
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Other than the starter cut relay (which is NC), is relay in mod that you've done (which is NO).
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