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VSS signal different A4/T56?

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Old Feb 28, 2006 | 09:48 PM
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shr00m-dew's Avatar
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Default VSS signal different A4/T56?

Don't feel like digging through the service manual to find this info. Is the VSS output different from A4 to T56? I've been road testing my swap and the speedo's off. Donor car and my car both have 3.23's, but the PCM is still programmed for an auto. I hope they are different, hate to track this one down.

The only other things that I think could cause it (too slow) are reversed VSS wires off the tranny? or the fact my speedo board is a 2000 but the speedo needle motor is from a 99. Both boards were identical, I just needed TA front gauges.

Any thoughts?

Kevin D.
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Old Feb 28, 2006 | 10:15 PM
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Originally Posted by shr00m-dew
Don't feel like digging through the service manual to find this info. Is the VSS output different from A4 to T56? I've been road testing my swap and the speedo's off. Donor car and my car both have 3.23's, but the PCM is still programmed for an auto. I hope they are different, hate to track this one down.

The only other things that I think could cause it (too slow) are reversed VSS wires off the tranny? or the fact my speedo board is a 2000 but the speedo needle motor is from a 99. Both boards were identical, I just needed TA front gauges.

Any thoughts?

Kevin D.
AFAIK, The A4 uses a 40 tooth reluctor ring and the T56 uses a 17 tooth so that should be your problem! HTHs.......... Bill
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Old Feb 28, 2006 | 10:26 PM
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reflash your ecu for a m6 and it should fix your problem as long as everything is wired properly.
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Old Mar 1, 2006 | 09:00 PM
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Cool. Thanks guys.

Kevin D.
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