Engine dies while driving
Thread Starter
AudiWorld Super User
Joined: Mar 2000
Posts: 8,028
Likes: 1
From: Hawaii
Engine dies while driving
First off, I have a 1999.5 A4 1.8TQ
Anyone have any ideas as to what the problem can be? I was thinking it might be the batt but I had it tested at Kragen and they said the batt and alternator are testing fine. I notice that the voltmeter runs lower than normal though, just under the 14V mark and even around 12.5V sometimes (hot day, AC on, radio on). Is that normal?
My next guess is the spark plugs. I have a 99.5 and haven't ever changed the spark plugs myself. So the last time they were changed was at a service interval (50K or less) and I have 83k now.
I VAG'd the car and these are the only codes that came up:
Address 01 -------------------------------------------------------
Controller: 8D0 907 557 P
Component: 1.8L R4/5VT MOTR HS D07
Coding: 06201
Shop #: WSC 06335
2 Faults Found:
18010 - Power Supply Terminal 30: Voltage too Low
P1602 - 35-10 - - - Intermittent
16806 - Main Catalyst: Bank 1: Efficiency Below Threshold
P0422 - 35-00 - -
Readiness: 0000 0000
Don't pay any attn to the Catalytic converter one ;-)
Any ideas as to what can be the problem?
Anyone have any ideas as to what the problem can be? I was thinking it might be the batt but I had it tested at Kragen and they said the batt and alternator are testing fine. I notice that the voltmeter runs lower than normal though, just under the 14V mark and even around 12.5V sometimes (hot day, AC on, radio on). Is that normal?
My next guess is the spark plugs. I have a 99.5 and haven't ever changed the spark plugs myself. So the last time they were changed was at a service interval (50K or less) and I have 83k now.
I VAG'd the car and these are the only codes that came up:
Address 01 -------------------------------------------------------
Controller: 8D0 907 557 P
Component: 1.8L R4/5VT MOTR HS D07
Coding: 06201
Shop #: WSC 06335
2 Faults Found:
18010 - Power Supply Terminal 30: Voltage too Low
P1602 - 35-10 - - - Intermittent
16806 - Main Catalyst: Bank 1: Efficiency Below Threshold
P0422 - 35-00 - -
Readiness: 0000 0000
Don't pay any attn to the Catalytic converter one ;-)
Any ideas as to what can be the problem?
AudiWorld Super User
Joined: Aug 2001
Posts: 7,816
Likes: 0
do a search noob!!!
Check your ECU maybe its loose somehow. And if its the original battery in there changing it out cant hurt.<ul><li><a href="https://forums.audiworld.com/a4/msgs/2290948.phtml">https://forums.audiworld.com/a4/msgs/2290948.phtml</a</li></ul>
Thread Starter
AudiWorld Super User
Joined: Mar 2000
Posts: 8,028
Likes: 1
From: Hawaii
HA, you're gonna get it Ted!
Haven't checked the ECU, but can't see how it could get loose. I'll check it when it stops raining up here.
The batt was changed once about 3.5 years ago. I never drained this one completely so I don't think it should go bad yet.
It might be the MAF, but how can I check that to see if it's bad or not?
Also, what the heck is Terminal 30? I'm sure that would explain something...
You linked me to my own thread btw.
The batt was changed once about 3.5 years ago. I never drained this one completely so I don't think it should go bad yet.
It might be the MAF, but how can I check that to see if it's bad or not?
Also, what the heck is Terminal 30? I'm sure that would explain something...
You linked me to my own thread btw.
AudiWorld Super User
Joined: Aug 2001
Posts: 7,816
Likes: 0
oh **** oops haha thats what i get for calling u a noob huh
There thats the correct link.
Hey, keep the rain up there. We have had enough rain down here.<ul><li><a href="https://forums.audiworld.com/s4/msgs/914902.phtml">https://forums.audiworld.com/s4/msgs/914902.phtml</a</li></ul>
Hey, keep the rain up there. We have had enough rain down here.<ul><li><a href="https://forums.audiworld.com/s4/msgs/914902.phtml">https://forums.audiworld.com/s4/msgs/914902.phtml</a</li></ul>
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Thread Starter
AudiWorld Super User
Joined: Mar 2000
Posts: 8,028
Likes: 1
From: Hawaii
hmm, I was also told that maybe it was because I disconnected the batt.
But I know I haven't so I don't know what the heck is up. I guess I'll try to disconnect the ECU and reconnect it and the same for the batt terminals, even though they 're visibly on there really good. I guess at the same time I can check that little circle and see if it's still green or whatever.
I'm glad it isn't the MAF because that's $$
I'm glad it isn't the MAF because that's $$