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1993 BMW 325 Car accelerates as soon as its turned on

Tiny
BM DUBYA
  • MEMBER
  • 1993 BMW 325
1993 BMW 325

As soon as I turn on my car it accelerates up to 3000rpms and comes back down to zero. It does this over and over and it starts going higher and higher. I dont even push down the gas. Any ideas what my problem may be?

Ive replaced: throttle position sensor, mass airflow sensor, air mass sensor, all were previously used.
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Friday, October 17th, 2008 AT 10:47 PM

5 Replies

Tiny
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  • MECHANIC
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Might be the idle air control is faulting open.
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Saturday, October 18th, 2008 AT 9:48 AM
Tiny
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I replaced my idle control valve, now my car goes up to the same RPMS but it doesn't come down could it be that my throttle position sensor is no good?
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Sunday, October 19th, 2008 AT 12:48 PM
Tiny
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It is possible the TPS is bad, have you tried unplugging it?
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Sunday, October 19th, 2008 AT 1:44 PM
Tiny
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Yes but it doesn't make any difference when we do.
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Monday, October 20th, 2008 AT 5:43 PM
Tiny
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Installing used parts is often hit and miss, there is little for me to advise you on with too many variables in the equation, good luck. ♥
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Monday, October 20th, 2008 AT 7:48 PM

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