Does the Trottle Position Sensor have anything to do with the transmission?

amazonpup · #1 09-02-2004, 09:01 AM

I have a '99 Chevy Blazer. 4.3 V6 Automatic. The transmission is shifting at higher RPMs then normal. I gets up to about 20mph before it shifts into 2nd gear. I have tried disconnecting the battery for a while and that didn't help. I was wondering if this could have anything to do with the Thorttle Position Sensor or dose something else control when the transmission shifts?

BlazerLT · #2 09-02-2004, 02:33 PM

Vss

amazonpup · #3 09-02-2004, 02:38 PM

What about the VSS?

BlazerLT · #4 09-02-2004, 02:39 PM

Vehicle speed Sensor on the Transmission.

amazonpup · #5 09-02-2004, 02:41 PM

So you think that it is the VSS and not the Throttle Position Sensor?

BlazerLT · #6 09-02-2004, 02:45 PM

yes, transmission can't tell how fast you are going.

First off, try resetting the computer by removing the negative battery cable for 5 minutes.

amazonpup · #7 09-02-2004, 02:48 PM

I tried disconnecting the battery. The SES light was no longer on after I reconnected it, but it is still shifting wrong. How hard is it to replace the VSS?

Jetmech2 · #8 09-02-2004, 08:40 PM

Quote:

Originally Posted by BlazerLT

yes, transmission can't tell how fast you are going.

First off, try resetting the computer by removing the negative battery cable for 5 minutes.

All cars sold in U.S.A. since 1996 use the OBD2 computer system with a non-volitile memory ,just unplugging the battery for 5 minuets will not reset all your codes,that must be done with a diagnostic computer, thanks to our federal goverment and Al Gore gets a big share of the credit

amazonpup · #9 09-02-2004, 10:32 PM

I replaced the Throttle Position Sensor and that fixed the problem. It is shifting perfectly now. Thanks for all of your help.

BlazerLT · #10 09-03-2004, 11:52 AM

Quote:

Originally Posted by Jetmech2

All cars sold in U.S.A. since 1996 use the OBD2 computer system with a non-volitile memory ,just unplugging the battery for 5 minuets will not reset all your codes,that must be done with a diagnostic computer, thanks to our federal goverment and Al Gore gets a big share of the credit

Nope, you unplug the battery for 10-15 minutes and everything is gone.

Don't argue against me, I done it several times and I own a scanner.

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