Rain causing computer errors
10-02-2007 | 12:44 AM
#11
Guest
Posts: n/a
Re: Rain causing computer errors
On Mon, 01 Oct 2007 21:54:09 -0600, TonyJ <tonyjNOSPAM@NOSPAMvisi.com> wrote:
>
>
>dave AKA vwdoc1 wrote:
>> Are the drain holes under the windshield clear of debris? I am thinking
>> that water fills up that tray and possibly gets some wiring wet.
>> I have seen a few Passats with ABS modules (Blinking ABS/Brake Lights) that
>> I could not connect to with my vag-com tool.
>> I suspect their modules need repair/replacement.
>>
>> That Vacuum Loss in the fuel system has me curious though! AFAIK the fuel
>> system is under pressure but the Emissions system can have vacuum issues.
>> Vacuum hoses commonly need replacement on the 1.8t engines but I am not sure
>> about the other Audi engines.
>>
>My son's '98 A4 V6 has been having a few vacuum issues lately most of
>which we have chased down. One was tough and was associated with the
>secondary air pump (under passenger side and injects air into the cat
>during warm-up to protect it from burning out). He called the local
>dealer and found out that there had been a recall on the vacuum lines
>for the pump. The dealer has had in for a week now while they try to
>find the parts but at least they have supplied him with a rental car at
>no charge. So, in short, the V6 engines have their share of vacuum issues.
>
>Could one of the OPs codes been due to a loose gas cap?
fwiw, the secondary air system doesn't "protect" the cat during warm up - it
adds oxygen to the cat to help burn up the excess hydrocarbons that occur
during engine warm up, when the ECU is richening the fuel mix. A properly
working system causes the cat to get hotter, quicker, to greatly cut emissions
during warm up...
/daytripper
'00 s4 6spd
>
>
>dave AKA vwdoc1 wrote:
>> Are the drain holes under the windshield clear of debris? I am thinking
>> that water fills up that tray and possibly gets some wiring wet.
>> I have seen a few Passats with ABS modules (Blinking ABS/Brake Lights) that
>> I could not connect to with my vag-com tool.
>> I suspect their modules need repair/replacement.
>>
>> That Vacuum Loss in the fuel system has me curious though! AFAIK the fuel
>> system is under pressure but the Emissions system can have vacuum issues.
>> Vacuum hoses commonly need replacement on the 1.8t engines but I am not sure
>> about the other Audi engines.
>>
>My son's '98 A4 V6 has been having a few vacuum issues lately most of
>which we have chased down. One was tough and was associated with the
>secondary air pump (under passenger side and injects air into the cat
>during warm-up to protect it from burning out). He called the local
>dealer and found out that there had been a recall on the vacuum lines
>for the pump. The dealer has had in for a week now while they try to
>find the parts but at least they have supplied him with a rental car at
>no charge. So, in short, the V6 engines have their share of vacuum issues.
>
>Could one of the OPs codes been due to a loose gas cap?
fwiw, the secondary air system doesn't "protect" the cat during warm up - it
adds oxygen to the cat to help burn up the excess hydrocarbons that occur
during engine warm up, when the ECU is richening the fuel mix. A properly
working system causes the cat to get hotter, quicker, to greatly cut emissions
during warm up...
/daytripper
'00 s4 6spd
10-02-2007 | 12:44 AM
#12
Guest
Posts: n/a
Re: Rain causing computer errors
On Mon, 01 Oct 2007 21:54:09 -0600, TonyJ <tonyjNOSPAM@NOSPAMvisi.com> wrote:
>
>
>dave AKA vwdoc1 wrote:
>> Are the drain holes under the windshield clear of debris? I am thinking
>> that water fills up that tray and possibly gets some wiring wet.
>> I have seen a few Passats with ABS modules (Blinking ABS/Brake Lights) that
>> I could not connect to with my vag-com tool.
>> I suspect their modules need repair/replacement.
>>
>> That Vacuum Loss in the fuel system has me curious though! AFAIK the fuel
>> system is under pressure but the Emissions system can have vacuum issues.
>> Vacuum hoses commonly need replacement on the 1.8t engines but I am not sure
>> about the other Audi engines.
>>
>My son's '98 A4 V6 has been having a few vacuum issues lately most of
>which we have chased down. One was tough and was associated with the
>secondary air pump (under passenger side and injects air into the cat
>during warm-up to protect it from burning out). He called the local
>dealer and found out that there had been a recall on the vacuum lines
>for the pump. The dealer has had in for a week now while they try to
>find the parts but at least they have supplied him with a rental car at
>no charge. So, in short, the V6 engines have their share of vacuum issues.
>
>Could one of the OPs codes been due to a loose gas cap?
fwiw, the secondary air system doesn't "protect" the cat during warm up - it
adds oxygen to the cat to help burn up the excess hydrocarbons that occur
during engine warm up, when the ECU is richening the fuel mix. A properly
working system causes the cat to get hotter, quicker, to greatly cut emissions
during warm up...
/daytripper
'00 s4 6spd
>
>
>dave AKA vwdoc1 wrote:
>> Are the drain holes under the windshield clear of debris? I am thinking
>> that water fills up that tray and possibly gets some wiring wet.
>> I have seen a few Passats with ABS modules (Blinking ABS/Brake Lights) that
>> I could not connect to with my vag-com tool.
>> I suspect their modules need repair/replacement.
>>
>> That Vacuum Loss in the fuel system has me curious though! AFAIK the fuel
>> system is under pressure but the Emissions system can have vacuum issues.
>> Vacuum hoses commonly need replacement on the 1.8t engines but I am not sure
>> about the other Audi engines.
>>
>My son's '98 A4 V6 has been having a few vacuum issues lately most of
>which we have chased down. One was tough and was associated with the
>secondary air pump (under passenger side and injects air into the cat
>during warm-up to protect it from burning out). He called the local
>dealer and found out that there had been a recall on the vacuum lines
>for the pump. The dealer has had in for a week now while they try to
>find the parts but at least they have supplied him with a rental car at
>no charge. So, in short, the V6 engines have their share of vacuum issues.
>
>Could one of the OPs codes been due to a loose gas cap?
fwiw, the secondary air system doesn't "protect" the cat during warm up - it
adds oxygen to the cat to help burn up the excess hydrocarbons that occur
during engine warm up, when the ECU is richening the fuel mix. A properly
working system causes the cat to get hotter, quicker, to greatly cut emissions
during warm up...
/daytripper
'00 s4 6spd
10-02-2007 | 12:44 AM
#13
Guest
Posts: n/a
Re: Rain causing computer errors
On Mon, 01 Oct 2007 21:54:09 -0600, TonyJ <tonyjNOSPAM@NOSPAMvisi.com> wrote:
>
>
>dave AKA vwdoc1 wrote:
>> Are the drain holes under the windshield clear of debris? I am thinking
>> that water fills up that tray and possibly gets some wiring wet.
>> I have seen a few Passats with ABS modules (Blinking ABS/Brake Lights) that
>> I could not connect to with my vag-com tool.
>> I suspect their modules need repair/replacement.
>>
>> That Vacuum Loss in the fuel system has me curious though! AFAIK the fuel
>> system is under pressure but the Emissions system can have vacuum issues.
>> Vacuum hoses commonly need replacement on the 1.8t engines but I am not sure
>> about the other Audi engines.
>>
>My son's '98 A4 V6 has been having a few vacuum issues lately most of
>which we have chased down. One was tough and was associated with the
>secondary air pump (under passenger side and injects air into the cat
>during warm-up to protect it from burning out). He called the local
>dealer and found out that there had been a recall on the vacuum lines
>for the pump. The dealer has had in for a week now while they try to
>find the parts but at least they have supplied him with a rental car at
>no charge. So, in short, the V6 engines have their share of vacuum issues.
>
>Could one of the OPs codes been due to a loose gas cap?
fwiw, the secondary air system doesn't "protect" the cat during warm up - it
adds oxygen to the cat to help burn up the excess hydrocarbons that occur
during engine warm up, when the ECU is richening the fuel mix. A properly
working system causes the cat to get hotter, quicker, to greatly cut emissions
during warm up...
/daytripper
'00 s4 6spd
>
>
>dave AKA vwdoc1 wrote:
>> Are the drain holes under the windshield clear of debris? I am thinking
>> that water fills up that tray and possibly gets some wiring wet.
>> I have seen a few Passats with ABS modules (Blinking ABS/Brake Lights) that
>> I could not connect to with my vag-com tool.
>> I suspect their modules need repair/replacement.
>>
>> That Vacuum Loss in the fuel system has me curious though! AFAIK the fuel
>> system is under pressure but the Emissions system can have vacuum issues.
>> Vacuum hoses commonly need replacement on the 1.8t engines but I am not sure
>> about the other Audi engines.
>>
>My son's '98 A4 V6 has been having a few vacuum issues lately most of
>which we have chased down. One was tough and was associated with the
>secondary air pump (under passenger side and injects air into the cat
>during warm-up to protect it from burning out). He called the local
>dealer and found out that there had been a recall on the vacuum lines
>for the pump. The dealer has had in for a week now while they try to
>find the parts but at least they have supplied him with a rental car at
>no charge. So, in short, the V6 engines have their share of vacuum issues.
>
>Could one of the OPs codes been due to a loose gas cap?
fwiw, the secondary air system doesn't "protect" the cat during warm up - it
adds oxygen to the cat to help burn up the excess hydrocarbons that occur
during engine warm up, when the ECU is richening the fuel mix. A properly
working system causes the cat to get hotter, quicker, to greatly cut emissions
during warm up...
/daytripper
'00 s4 6spd
10-02-2007 | 03:30 AM
#14
Guest
Posts: n/a
Re: Rain causing computer errors
dave AKA vwdoc1 wrote:
> Are the drain holes under the windshield clear of debris? I am thinking
> that water fills up that tray and possibly gets some wiring wet.
Is probably the correct answer. IIRC the A6 and Passat are similar.
http://www.weirdlittlebiscuit.com/passat/leak/
Check the passenger footwell, as the CCU is there on Passats.
> Are the drain holes under the windshield clear of debris? I am thinking
> that water fills up that tray and possibly gets some wiring wet.
Is probably the correct answer. IIRC the A6 and Passat are similar.
http://www.weirdlittlebiscuit.com/passat/leak/
Check the passenger footwell, as the CCU is there on Passats.
10-02-2007 | 03:30 AM
#15
Guest
Posts: n/a
Re: Rain causing computer errors
dave AKA vwdoc1 wrote:
> Are the drain holes under the windshield clear of debris? I am thinking
> that water fills up that tray and possibly gets some wiring wet.
Is probably the correct answer. IIRC the A6 and Passat are similar.
http://www.weirdlittlebiscuit.com/passat/leak/
Check the passenger footwell, as the CCU is there on Passats.
> Are the drain holes under the windshield clear of debris? I am thinking
> that water fills up that tray and possibly gets some wiring wet.
Is probably the correct answer. IIRC the A6 and Passat are similar.
http://www.weirdlittlebiscuit.com/passat/leak/
Check the passenger footwell, as the CCU is there on Passats.
10-02-2007 | 03:30 AM
#16
Guest
Posts: n/a
Re: Rain causing computer errors
dave AKA vwdoc1 wrote:
> Are the drain holes under the windshield clear of debris? I am thinking
> that water fills up that tray and possibly gets some wiring wet.
Is probably the correct answer. IIRC the A6 and Passat are similar.
http://www.weirdlittlebiscuit.com/passat/leak/
Check the passenger footwell, as the CCU is there on Passats.
> Are the drain holes under the windshield clear of debris? I am thinking
> that water fills up that tray and possibly gets some wiring wet.
Is probably the correct answer. IIRC the A6 and Passat are similar.
http://www.weirdlittlebiscuit.com/passat/leak/
Check the passenger footwell, as the CCU is there on Passats.
10-02-2007 | 03:30 AM
#17
Guest
Posts: n/a
Re: Rain causing computer errors
dave AKA vwdoc1 wrote:
> Are the drain holes under the windshield clear of debris? I am thinking
> that water fills up that tray and possibly gets some wiring wet.
Is probably the correct answer. IIRC the A6 and Passat are similar.
http://www.weirdlittlebiscuit.com/passat/leak/
Check the passenger footwell, as the CCU is there on Passats.
> Are the drain holes under the windshield clear of debris? I am thinking
> that water fills up that tray and possibly gets some wiring wet.
Is probably the correct answer. IIRC the A6 and Passat are similar.
http://www.weirdlittlebiscuit.com/passat/leak/
Check the passenger footwell, as the CCU is there on Passats.
10-03-2007 | 05:01 AM
#18
Guest
Posts: n/a
Re: Rain causing computer errors
Dougga wrote:
> I have a 2000 A6 Quattro and am finding a correlation between the
> weather and the functioning of my car. Currently, I am getting the
> following errors: ABS - Brake - Check Engine/ The ABS and Brake
> lites come on and occasionally go off again. The Check Engine seems to
> come on and stays on. I went by my local mechanic and he reset the
> check engine lite once noting that I apparently had the following
> faults"
> 1. Vacuum loss in fuel system
> 2. Two separate faults in Oxygen sensors 3. Brake module bad
>
> This mechanic handed me a $2000+ estimate and told me that Audi's
> frequently commit electronic sepuku. [his words] I'm a bit more
> skeptical of him than I am of Audi.
>
> I highly doubt that all of these came into play simultaneously without
> lightening striking so I'm suspecting computer problems.
>
> Note: the car was in a mild collision over the summer and the rear left
> fender was bent slightly... some possibility of water getting in back
> there.
>
> Any thoughts?
Your mechanic's estimate seems to be reasonable, the ABS module being the
most expensive of the group. A regular problem, I could build a small
hill with all the ABS modules I've had to replace over the years.
> I have a 2000 A6 Quattro and am finding a correlation between the
> weather and the functioning of my car. Currently, I am getting the
> following errors: ABS - Brake - Check Engine/ The ABS and Brake
> lites come on and occasionally go off again. The Check Engine seems to
> come on and stays on. I went by my local mechanic and he reset the
> check engine lite once noting that I apparently had the following
> faults"
> 1. Vacuum loss in fuel system
> 2. Two separate faults in Oxygen sensors 3. Brake module bad
>
> This mechanic handed me a $2000+ estimate and told me that Audi's
> frequently commit electronic sepuku. [his words] I'm a bit more
> skeptical of him than I am of Audi.
>
> I highly doubt that all of these came into play simultaneously without
> lightening striking so I'm suspecting computer problems.
>
> Note: the car was in a mild collision over the summer and the rear left
> fender was bent slightly... some possibility of water getting in back
> there.
>
> Any thoughts?
Your mechanic's estimate seems to be reasonable, the ABS module being the
most expensive of the group. A regular problem, I could build a small
hill with all the ABS modules I've had to replace over the years.
10-03-2007 | 05:01 AM
#19
Guest
Posts: n/a
Re: Rain causing computer errors
Dougga wrote:
> I have a 2000 A6 Quattro and am finding a correlation between the
> weather and the functioning of my car. Currently, I am getting the
> following errors: ABS - Brake - Check Engine/ The ABS and Brake
> lites come on and occasionally go off again. The Check Engine seems to
> come on and stays on. I went by my local mechanic and he reset the
> check engine lite once noting that I apparently had the following
> faults"
> 1. Vacuum loss in fuel system
> 2. Two separate faults in Oxygen sensors 3. Brake module bad
>
> This mechanic handed me a $2000+ estimate and told me that Audi's
> frequently commit electronic sepuku. [his words] I'm a bit more
> skeptical of him than I am of Audi.
>
> I highly doubt that all of these came into play simultaneously without
> lightening striking so I'm suspecting computer problems.
>
> Note: the car was in a mild collision over the summer and the rear left
> fender was bent slightly... some possibility of water getting in back
> there.
>
> Any thoughts?
Your mechanic's estimate seems to be reasonable, the ABS module being the
most expensive of the group. A regular problem, I could build a small
hill with all the ABS modules I've had to replace over the years.
> I have a 2000 A6 Quattro and am finding a correlation between the
> weather and the functioning of my car. Currently, I am getting the
> following errors: ABS - Brake - Check Engine/ The ABS and Brake
> lites come on and occasionally go off again. The Check Engine seems to
> come on and stays on. I went by my local mechanic and he reset the
> check engine lite once noting that I apparently had the following
> faults"
> 1. Vacuum loss in fuel system
> 2. Two separate faults in Oxygen sensors 3. Brake module bad
>
> This mechanic handed me a $2000+ estimate and told me that Audi's
> frequently commit electronic sepuku. [his words] I'm a bit more
> skeptical of him than I am of Audi.
>
> I highly doubt that all of these came into play simultaneously without
> lightening striking so I'm suspecting computer problems.
>
> Note: the car was in a mild collision over the summer and the rear left
> fender was bent slightly... some possibility of water getting in back
> there.
>
> Any thoughts?
Your mechanic's estimate seems to be reasonable, the ABS module being the
most expensive of the group. A regular problem, I could build a small
hill with all the ABS modules I've had to replace over the years.
10-03-2007 | 05:01 AM
#20
Guest
Posts: n/a
Re: Rain causing computer errors
Dougga wrote:
> I have a 2000 A6 Quattro and am finding a correlation between the
> weather and the functioning of my car. Currently, I am getting the
> following errors: ABS - Brake - Check Engine/ The ABS and Brake
> lites come on and occasionally go off again. The Check Engine seems to
> come on and stays on. I went by my local mechanic and he reset the
> check engine lite once noting that I apparently had the following
> faults"
> 1. Vacuum loss in fuel system
> 2. Two separate faults in Oxygen sensors 3. Brake module bad
>
> This mechanic handed me a $2000+ estimate and told me that Audi's
> frequently commit electronic sepuku. [his words] I'm a bit more
> skeptical of him than I am of Audi.
>
> I highly doubt that all of these came into play simultaneously without
> lightening striking so I'm suspecting computer problems.
>
> Note: the car was in a mild collision over the summer and the rear left
> fender was bent slightly... some possibility of water getting in back
> there.
>
> Any thoughts?
Your mechanic's estimate seems to be reasonable, the ABS module being the
most expensive of the group. A regular problem, I could build a small
hill with all the ABS modules I've had to replace over the years.
> I have a 2000 A6 Quattro and am finding a correlation between the
> weather and the functioning of my car. Currently, I am getting the
> following errors: ABS - Brake - Check Engine/ The ABS and Brake
> lites come on and occasionally go off again. The Check Engine seems to
> come on and stays on. I went by my local mechanic and he reset the
> check engine lite once noting that I apparently had the following
> faults"
> 1. Vacuum loss in fuel system
> 2. Two separate faults in Oxygen sensors 3. Brake module bad
>
> This mechanic handed me a $2000+ estimate and told me that Audi's
> frequently commit electronic sepuku. [his words] I'm a bit more
> skeptical of him than I am of Audi.
>
> I highly doubt that all of these came into play simultaneously without
> lightening striking so I'm suspecting computer problems.
>
> Note: the car was in a mild collision over the summer and the rear left
> fender was bent slightly... some possibility of water getting in back
> there.
>
> Any thoughts?
Your mechanic's estimate seems to be reasonable, the ABS module being the
most expensive of the group. A regular problem, I could build a small
hill with all the ABS modules I've had to replace over the years.
