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Old 04-26-2014, 03:48 PM   #1
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Hello all, new on here but have had a 1996 A4 and loved it. I resonantly bought a 2004 A6 Sline and it feels like there is little power and bad MPG (to me) driving city/highway miles with 11.242 gal gave me 16.88MPG. I've read on here and other forums about the EGT giving lower boost (limp mode) and having bad MPG. I have no CEL light like described like others said. There isn't any rotten egg smell so I assume the cats are good. Can anyone please give me their thoughts.
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Old 04-26-2014, 06:29 PM   #2
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Hello all, new on here but have had a 1996 A4 and loved it. I resonantly bought a 2004 A6 Sline and it feels like there is little power and bad MPG (to me) driving city/highway miles with 11.242 gal gave me 16.88MPG. I've read on here and other forums about the EGT giving lower boost (limp mode) and having bad MPG. I have no CEL light like described like others said. There isn't any rotten egg smell so I assume the cats are good. Can anyone please give me their thoughts.
Codes?
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Old 04-26-2014, 07:20 PM   #3
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I haven't been to a garage to see yet. I ended up ordering used EGTs from a place down in Tucson for $185.00 for both shipped. Even if I change them out do I still need to have codes cleared for it to work right?
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Old 04-26-2014, 07:21 PM   #4
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is it an automatic?
I cant remember if the sline has the 2.7t or not. I think it does but i had a 2.7t with an auto trans and mine did the sale thing. I tried new plugs and that helped a little but other than that all i can think is you might have one or a few coil packs that are on their way out. I have had that problem too. Mine was the 5 cylinder, the T connector from the coolant tank was dripping on the coil pack.
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Old 04-26-2014, 07:24 PM   #5
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it will run better but the correct way would be to clear the codes after you replace the egt. Do you know what your codes are? Also have fun with those EGT valves. Have you looked at their placement? They are a pain in the *** to get on and off. The bolts are nearly impossible to get in and out. And if you do get them out you are going to drop one and never find it.
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Old 04-27-2014, 03:07 AM   #6
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So the plan is to throw parts (used parts at that) at the car and hope it fixes the problem? Good luck. Why not pick up a cheap code reader instead of flailing about based on Internet guesses. The information is right there. Go get it.
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2005 A6 Sedan Q 3.2 (wife's whip)
2003 S8 (Q Ship)
2000 A4 Avant Q 2.8 (daily driver)
1999 BMW M Coupe (clownshoe)
1980 VW Scirocco (mid-life crisis car)
1983 Mazda RX-7 (revolutionary sports car)
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Old 04-27-2014, 06:08 AM   #7
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So the plan is to throw parts (used parts at that) at the car and hope it fixes the problem? Good luck. Why not pick up a cheap code reader instead of flailing about based on Internet guesses. The information is right there. Go get it.
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Old 04-27-2014, 06:39 AM   #8
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is it an automatic?
I cant remember if the sline has the 2.7t or not. I think it does but i had a 2.7t with an auto trans and mine did the sale thing. I tried new plugs and that helped a little but other than that all i can think is you might have one or a few coil packs that are on their way out. I have had that problem too. Mine was the 5 cylinder, the T connector from the coolant tank was dripping on the coil pack.
Yes its a auto. I've read somewhere there was a recall about 2.7L coil packs. Ill have to call the dealer tomorrow.

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it will run better but the correct way would be to clear the codes after you replace the egt. Do you know what your codes are? Also have fun with those EGT valves. Have you looked at their placement? They are a pain in the *** to get on and off. The bolts are nearly impossible to get in and out. And if you do get them out you are going to drop one and never find it.
Yes the passenger side looks not so bad after I would pull the breather box. It's the drivers side that I dreading, but I do have nice tool collection over the past few years working on the last A4.

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So the plan is to throw parts (used parts at that) at the car and hope it fixes the problem? Good luck. Why not pick up a cheap code reader instead of flailing about based on Internet guesses. The information is right there. Go get it.
Well as you put it that way. Yea I see your point taking a shot in the dark is kinda crazy. I just want it fixed so I guess I went into a desperation move reading other peoples threads.
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Old 04-27-2014, 06:53 AM   #9
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ya the 2.7t did have a coil pack recall but that recall came out fairly soon after the car was released. 95% of the time the original owner had it replaced by the dealer (from what i have seen, ive owned about 5 of these). Go ahead and just have it read at advanced auto parts or auto zone whoever does it for free. Also of people think you need VagCom to read the codes but a regular OBD-2 reader will read the codes. Im not sure it will clear them though
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Old 04-27-2014, 07:02 AM   #10
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I want to buy the VAG-COM or Ross Tech tool, but I've seen this cheap code reader not sure if it will read non CEL light codes? Please can you tell me if so I'll order it today.

Rules Rules
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Old 04-27-2014, 07:07 AM   #11
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Wrong insert

VAG-COM scanner tool VAG-COM scanner tool
[/QUOTE]
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Old 04-27-2014, 07:12 AM   #12
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We don't talk about the "cheap" fake VAGCOM systems on here. But in short they will clear codes yes, but that's all.
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Old 04-27-2014, 07:20 AM   #13
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[/QUOTE]

Oh that's not what I thought you were talking about. That looks like a regular OBD-2. I don't about that thing
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Old 04-27-2014, 09:51 AM   #14
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I think im just gonna order the Vag-Com or the Ross Tech. Im gonna have to read on which one is better or has more options for the money.
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Old 04-27-2014, 11:32 AM   #15
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Quote:
Originally Posted by mario_orsini5 View Post
I want to buy the VAG-COM or Ross Tech tool, but I've seen this cheap code reader not sure if it will read non CEL light codes? Please can you tell me if so I'll order it today.

Rules
I don't think I'd waste my money on that one. First clue it's not eligible for for Amazon Prime, second is you want to buy something from Jackie Chan?
There are a few better ones out there for maybe $80.
They all should be capable of canceling MILs…but it will take several days of driving to reset the readiness checks so you can pass emissions.
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Old 04-27-2014, 03:13 PM   #16
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I don't think I'd waste my money on that one. First clue it's not eligible for for Amazon Prime, second is you want to buy something from Jackie Chan?
There are a few better ones out there for maybe $80.
They all should be capable of canceling MILs…but it will take several days of driving to reset the readiness checks so you can pass emissions.
Yea I'm gonna stear clear of Jackie Chan. I realize I'm gonna have to put money into a good scan tool for now and future use. I'm looking at the Ross Tech software. Does anyone find Ross Tech any lesser of software than the VAG-COM?
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Old 04-27-2014, 04:19 PM   #17
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VCDS (an acronym for "VAG-COM Diagnostic System" and formerly known as VAG-COM[2][3]) is a Microsoft Windows-based software package,[3] developed and produced by Ross-Tech, LLC since May 2000.[1] It is primarily used for diagnostics and adjustments of Volkswagen Group motor vehicles, including Volkswagen Passenger Cars, Audi, SEAT, and Škoda automobiles,[4] along with Volkswagen Commercial Vehicles. The name "VAG-COM" derives from the acronym "VAG", the name by which the Volkswagen Group was formerly known.

From the wiki..take it for what it's worth...
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Old 04-27-2014, 05:00 PM   #18
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Yea I'm gonna stear clear of Jackie Chan. I realize I'm gonna have to put money into a good scan tool for now and future use. I'm looking at the Ross Tech software. Does anyone find Ross Tech any lesser of software than the VAG-COM?
VAGCOM is made by Ross Tech. So you are talking about the same thing. If you are just a novice car enthusiast i would just get a good normal OBD-2 scanner that is able to clear codes. You will be able to use that on any car, where as the VAGCOM software is only for VW, Audi, and a few other german brands. The only thing you would use vagcom for besides code reading would be to pinpoint misfires and adapt throttle body and things like that. if you are just looking to read and clear codes just go with the OBD-2. That my opinion.
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Old 04-30-2014, 05:33 PM   #19
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VCDS (an acronym for "VAG-COM Diagnostic System" and formerly known as VAG-COM[2][3]) is a Microsoft Windows-based software package,[3] developed and produced by Ross-Tech, LLC since May 2000.[1] It is primarily used for diagnostics and adjustments of Volkswagen Group motor vehicles, including Volkswagen Passenger Cars, Audi, SEAT, and Škoda automobiles,[4] along with Volkswagen Commercial Vehicles. The name "VAG-COM" derives from the acronym "VAG", the name by which the Volkswagen Group was formerly known.

From the wiki..take it for what it's worth...
Thank you for the info

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VAGCOM is made by Ross Tech. So you are talking about the same thing. If you are just a novice car enthusiast i would just get a good normal OBD-2 scanner that is able to clear codes. You will be able to use that on any car, where as the VAGCOM software is only for VW, Audi, and a few other german brands. The only thing you would use vagcom for besides code reading would be to pinpoint misfires and adapt throttle body and things like that. if you are just looking to read and clear codes just go with the OBD-2. That my opinion.
Ok, yea I want the Ross Tech just so I do have the ability to check out all the parameters if needed and just for me to see how the car is running. I'm going to to get it tuned once I have it straightened out. So I think having the full software would do me best.
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Old 04-30-2014, 05:40 PM   #20
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After changing the 2 EGT sensors and DAMN was that driver side a nightmare! The car has doubled its HP. I had it scanned and got to get this P0444 EVAP system purge control valve A circuit open figured out how to fix it. I have a good idea what it is from this EVAP
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Old 04-30-2014, 05:40 PM
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