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Forum: A6 / S6 (C5 Platform) Discussion
01-12-2005, 04:55 AM
Replies: 5
Views: 919
Posted By chianm

Thanks! Going to give that a shot tonight...

Thanks! Going to give that a shot tonight...
Forum: A6 / S6 (C5 Platform) Discussion
01-12-2005, 04:54 AM
Replies: 5
Views: 919
Posted By chianm

Had the water pump replaced a few months ago...

Had the water pump replaced a few months ago...
Forum: A6 / S6 (C5 Platform) Discussion
01-10-2005, 09:22 PM
Replies: 5
Views: 919
Posted By chianm

Bleeding the Coolant System??

Anyone know where the bleed valve for a 2000 A6 2.8Q? I think I have air in my lines.

Thanks!
Forum: A6 / S6 (C5 Platform) Discussion
12-22-2004, 05:05 AM
Replies: 2
Views: 245
Posted By chianm

Wrong ECU. Going to pick up a Bentley Manual to...

Wrong ECU. Going to pick up a Bentley Manual to trace the wire. Thanks!
Forum: A6 / S6 (C5 Platform) Discussion
12-20-2004, 07:21 PM
Replies: 2
Views: 245
Posted By chianm

Intermittent Failure of the Coolant Temp - Where is the ECU?

I am having lots of problem with my ECT. Posted earlier, thinking it was a dirty connection... I replaced my ECT, Cleaned the contacts and slapped it with di-electric grease to prevent it from...
Forum: A6 / S6 (C5 Platform) Discussion
12-02-2004, 07:56 PM
Replies: 6
Views: 259
Posted By chianm

I am having the same problem on my 2000 A6 ...

I am currently having the same problem on my ride. You must be getting the P0431 or P0421 code. I can't remember which is what.

Anyway, it's an emissions control problem. I am having it now. ...
Forum: A6 / S6 (C5 Platform) Discussion
11-29-2004, 04:06 PM
Replies: 1
Views: 576
Posted By chianm

Cleaning a Harness Connector

Has anyone cleaned a harness connector? I have been logging my ECT and found out that it's got a loose connection. Checked the wiring and it's secure. I am suspecting that there is significant...
Forum: A6 / S6 (C5 Platform) Discussion
11-24-2004, 06:15 AM
Replies: 7
Views: 264
Posted By chianm

Nothing on 12.06 ...

Where can I get the full list.

Also, the Codes are not the same in my car. 17 is not speed. It seems to be coolant temp. Can't verify it yet.
Forum: A6 / S6 (C5 Platform) Discussion
11-24-2004, 05:41 AM
Replies: 7
Views: 264
Posted By chianm

FOLLOW-UP

Changed my Engine Coolant Temp Sensor (ECT) last night. The heater seems to be working better today. I have been logging the sensor. Will see if it's just wishful thinking.

I am still getting...
Forum: A6 / S6 (C5 Platform) Discussion
11-24-2004, 05:34 AM
Replies: 34
Views: 84,311
Posted By chianm

Did that, but...

Didn't work. The resivor is connected to a pressure valve. Can't open the radiator cap like good old fashion cars of the past. :-P
Forum: A6 / S6 (C5 Platform) Discussion
11-23-2004, 07:55 PM
Replies: 34
Views: 84,311
Posted By chianm

Replacing Engine Coolant Temperature Sensor (ECT) - Long

Just replaced the ECT on my 2000 A6 2.8Q. It didn't take too long to replace, with the exception of figuring out how to pull the clip and harness connector out with my *big* hands. If I didn't know...
Forum: A6 / S6 (C5 Platform) Discussion
11-22-2004, 06:15 PM
Replies: 5
Views: 209
Posted By chianm

Re: Click click click sound when turning

It sounds like the axle. Just had that job done on my A6. The kit costs about $40 each at www.audiquattroparts.com if you want to do it yourself. If not, the dealer did it for a ton more. To not...
Forum: A6 / S6 (C5 Platform) Discussion
11-17-2004, 05:30 AM
Replies: 15
Views: 22,967
Posted By chianm

I used CarChip E/X to get the data.

It's a bit weak on how much it can do and collect, but it's sufficient for most troubleshooting needs.
Forum: A6 / S6 (C5 Platform) Discussion
11-16-2004, 06:38 PM
Replies: 7
Views: 264
Posted By chianm

I hear the motor moving all over the place...

maybe something to do with my ECT? It's going all over the place... I found this while troubleshooting my cats.

Will change out Temp Sensor this week. Waiting on parts to arrive.
Forum: A6 / S6 (C5 Platform) Discussion
11-16-2004, 06:17 PM
Replies: 15
Views: 22,967
Posted By chianm

More engine plots

Here are two plots. One is the Coolant Temp and the other the O2 B2 S2 plot. The first 2 min, the car is great. Then when it goes to close loop, it's all over the place.
<img...
Forum: A6 / S6 (C5 Platform) Discussion
11-16-2004, 06:07 PM
Replies: 15
Views: 22,967
Posted By chianm

Engine data for erratic ECT

<center><img src="http://pictureposter.audiworld.com/83960/engine_data.t.jpg"></center><p>
Finally plotted data from the car. Here is the reading on the ECT.

The other strange thing that's...
Forum: A6 / S6 (C5 Platform) Discussion
11-16-2004, 04:02 PM
Replies: 7
Views: 264
Posted By chianm

Heater problems?

Anyone has problems with their heater? The outside temp is 50F, Climate Control set to 70F, the heater was blowing out cool air.

Anyone has this problem?
Forum: A6 / S6 (C5 Platform) Discussion
11-16-2004, 07:31 AM
Replies: 15
Views: 22,967
Posted By chianm

Re: Like you, I'd be completely sure before I dropped $1,900 to replace 5 year old cats . . .

Yep. I am at 83000 as of this morning. Will hit 8500 by EOM.

Something strange happened yesterday as I was driving. All of a sudden, the car felt like she hit something, or she decided to...
Forum: A6 / S6 (C5 Platform) Discussion
11-15-2004, 05:19 PM
Replies: 15
Views: 22,967
Posted By chianm

Re: Change the coolant temp sensor first. It's cheap and can cause all kinds of

I cleared the CEL several times and now it's only showing Bank 2 being inefficient dropping code P0431. I have decided not to clear the code this time and keep logging the system. It's been a week...
Forum: A6 / S6 (C5 Platform) Discussion
11-15-2004, 04:50 PM
Replies: 15
Views: 22,967
Posted By chianm

P0431 Catalyst Warm Up Efficiency Below Threshold

I have a 2000 A6 2.8Q. Over the past few months, I had the CEL on. Recently, I brought the car to the dealership and they told me that I had two bad Cats. To my dismay, my exhaust warranty just...
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