Pelican Parts Forums - Question on BMW 3-Series E30 O2

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I have a '89 e30 325i with intermittent no startcranks over but will not stay on Seems to only happen when its been driven and warmed up. Has ALWAYS started when cold or been sitting overnight. Also random loss of throttle on the road. Feels like i just took my foot off the accelerator Making it so i have to pull over let it cool off enough so its willing to start up again. Sometimes it starts right back up sometimes not. I'm suspecting the o2 sensor. What else could it be? I'm going to replace the fuel pump relay, and main relay. Was also considering the ignition switch as the problem... Please help!

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This post was auto-generated based upon a question asked on our tech article page here:

If your engine doesn’t start you’ll want to check the basics. Check spark, fuel injector pulse and fuel pressure, volume and quality. Once you figure out what is missing, it will be easier to diagnose. The o2 sensor would not cause a problem like that.

- Nick