Question about 1999 BMW 318 ti

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E46 1.9 M43CU 1999. Cold Starting Problem.

The BMW developed a Problem with cold starting, I can only cold start with the Throttle position sensor disconnected and the engine does not run smooth through the revs. with the Throttle position sensor connected will start and stop within 20 seconds.

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Your Vanos are shot. here's the link to Beisan Systems. They sell a DIY kit to repair the vanos. http://www.beisansystems.com/ or Dr. Vanos sells a rebuilt Vanos using the kit from Beisan Systems..... http://www.drvanos.com/ Either solution will address your issuel which one you choose is based on your mecahnical expertise...

Posted on Jul 11, 2009

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Hi

It sounds as though you either have a faulty O2 sensor, or there is a fuel pressure issue, which from your description, could be due to a worn fuel pump.

If the car performs ok under full acceleration, but plays up at either part throttle or no throttle, then you may well have a faulty O2 sensor.

Very best regards

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