Acting wierd, I'm not sure what's wrong...

[cowens8]

So first off, this didnt start until tonight it seems.

My car is not coasting like it was before after I left off of the gas. It just seems like it drops back and loses speed very quickly now.

Also, the cruise control does not work anymore. It would work for a minute and then turn itself off. It reset it and it would turn off again until finally it wouldn't respond at all.

Any ideas?

[bigbro]

AT/MT/CVT, 1.8T/3.0, year?

[cowens8]

sorry, 2003 3.0L V6 manual

[J-jizzle]

Where in tennessee are you located?

[cowens8]

knoxville

[J-jizzle]

Cool. I was bout to go to school there but TTU has a better engineering division, and is cheeper. Sorry your shit isn't working right.

[cowens8]

yea Im gonna look into getting it fixed tomorrow, dont care really tonight. no check engine light.. yet. I went to UT for 2 years for engineering and im in debt now because of it. Ended up switching to comp. science after a year of engineering.

[J-jizzle]

I did Roan State community collage for 2 years and this is my first year at TTU. I have been getting paid to go to school so far but this shit is getting tuff so I hope I can keep it up. What type of engineering where you into.

[cowens8]

Civil and Electrical. UT is like the best engineering program in the SE, which basically translates into the hardest.

[J-jizzle]

It is only the best (maybe idk) because it has more focused divisions of engineering. I'm mechanical engineering, I hate electric. My room mate is civil, it seems ok.

[cowens8]

Thats just what I've heard, no experience at other colleges so Im not bragging on them, just saying its a bitch so I switched lol.

[J-jizzle]

Just hoping the same shit doesn't happen to me.

[cowens8]

Any1 have any idea what's going on with my car though?

[johnouellette]

any unusual noises?

Any thing drive train related could cause the car to slow down more than usual when coasting.

Maybe you were just really high and imagining things?

[diagnosticator]

Any1 have any idea what's going on with my car though?

Well, the Cruise Control function uses the Cruise Switch on the steering column, to send commands to the engine ECU via the Steering Column Control Module. The SCCM, outputs cruise control commands as message data packets on the power train CAN buss, and the functional cruise control is realized directly in the engine ECU as an Electronic Throttle Control mode.

If you have a VCDS/VAG-COM, you should scan the ECU for fault codes, and also scan the SCCM for fault codes related to CAN comms, and or viewing measuring blocks in the SCCM showing the CC switch states (1=ON, 0=OFF) while operating the switches, etc.

Based on the described coexisting symptoms of higher than normal engine braking on trailing throttle, and the glitchy then no-op CC, I suspect that there is a mechanical or electrical problem with the throttle body/electric throttle drive motor/mechanism. Usually, a fault with the EPC or Electric Power Control/e-Gas system would turn on the EPC fault warning light, but depending on the nature of the problem specifically, may not be monitored by the ECU such that the fault is recognized by the ECU in certain cases.

However, regardless of the background theory explained above, speculation is not helpful. A scan for fault codes is needed to evaluate what may be the problem here.

[cowens8]

Well, the Cruise Control function uses the Cruise Switch on the steering column, to send commands to the engine ECU via the Steering Column Control Module. The SCCM, outputs cruise control commands as message data packets on the power train CAN buss, and the functional cruise control is realized directly in the engine ECU as an Electronic Throttle Control mode.

If you have a VCDS/VAG-COM, you should scan the ECU for fault codes, and also scan the SCCM for fault codes related to CAN comms, and or viewing measuring blocks in the SCCM showing the CC switch states (1=ON, 0=OFF) while operating the switches, etc.

Based on the described coexisting symptoms of higher than normal engine braking on trailing throttle, and the glitchy then no-op CC, I suspect that there is a mechanical or electrical problem with the throttle body/electric throttle drive motor/mechanism. Usually, a fault with the EPC or Electric Power Control/e-Gas system would turn on the EPC fault warning light, but depending on the nature of the problem specifically, may not be monitored by the ECU such that the fault is recognized by the ECU in certain cases.

However, regardless of the background theory explained above, speculation is not helpful. A scan for fault codes is needed to evaluate what may be the problem here.

Best answer I could hope for. For previous poster, no, there are not any unusual noises at the moment and I was not high, for sure. lol