Check Engine Light
Thread Starter
Audiworld Junior Member
Joined: Dec 2000
Posts: 43
Likes: 1
Check Engine Light
I have an annoying check engine light I've been chasing around for months. Would appreciate the help. Here goes!
2000 FWD A4
148K miles
AWD engine code
Check engine light
codes are:
1.cylinder misfire (jumps around- not consistently the same ones.)
Parts I've replaced:
MAF
Injectors
Spark plugs (have not verified the gap mmmmm should do that)
Coil Packs
Primary and secondary O2 sensors
Cleaned Carbonio Air filter
Fuel filter about 10K ago
Oh yea, It's the only B5 that I know of with an APR Stage 3+. If there are others, let's talk. The car runs perfectly but this damn check engine light will keep me from passing inspection. Thanks in advance for any suggestions.
2000 FWD A4
148K miles
AWD engine code
Check engine light
codes are:
1.cylinder misfire (jumps around- not consistently the same ones.)
Parts I've replaced:
MAF
Injectors
Spark plugs (have not verified the gap mmmmm should do that)
Coil Packs
Primary and secondary O2 sensors
Cleaned Carbonio Air filter
Fuel filter about 10K ago
Oh yea, It's the only B5 that I know of with an APR Stage 3+. If there are others, let's talk. The car runs perfectly but this damn check engine light will keep me from passing inspection. Thanks in advance for any suggestions.
AudiWorld Super User
Joined: Feb 2008
Posts: 9,453
Likes: 0
if you clear it... does it flash when it comes back? or just solid?
i.e. .. it's cleared... you're driving along;
1) the light starts flashing at you, then stays on solid
or
2) it just comes on solid
do you feel the car misfiring at all?
1) the light starts flashing at you, then stays on solid
or
2) it just comes on solid
do you feel the car misfiring at all?
Thread Starter
Audiworld Junior Member
Joined: Dec 2000
Posts: 43
Likes: 1
Re: if you clear it... does it flash when it comes back? or just solid?
When I clear it it takes a few miles to come back on. The time it takes to come back on varies depending on the type of driving I am doing. City driving could be 20 to 80 miles. Highway driving can take 300+ before I see it again. It will come back on solid. It will occasionally flash but that only happens when I am cruising through my neighborhood and partial to no throttle. I don't seem to feel any difference in the way the car drives. The RPM's don't dip or anything. If I accelerate or rev the motor it goes away.
Member
Joined: Oct 2000
Posts: 41,948
Likes: 1
From: PA
what plugs are you using and what gap? what software?
you're not the only APR stage 3+ on a B5 A4, but the first I've seen on a 2000 -- except maybe Ray Kahn, but I'm not 100% on his setup. The 3+ was meant for the 2001s.
Have you talked to APR?
Have you talked to APR?
Thread Starter
Audiworld Junior Member
Joined: Dec 2000
Posts: 43
Likes: 1
Re: what plugs are you using and what gap?
hey, glad to hear there is another 3 plus out there. i used to work at apr and have spoken with tom. he thinks, with the millage, i could use a bg service. thinks there could be carbon build up around the valves that is causing the misfires. he also said to check the gap. not sure what they are right now. have you found a gap that works well for you?
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Member
Joined: Oct 2000
Posts: 41,948
Likes: 1
From: PA
.028 seems to be the sweet spot. NGKs are boxed at .032 and typically work for stock/chip, but
the bigger turbos often need to be gapped down a bit.
I run NGK BKR7E (Part Number 6097) every 5k with oil changes. -- which brings up the questions...what plugs, how old, and at what gap? This could be as simple as $2 spark plugs and a gap tool.
I run NGK BKR7E (Part Number 6097) every 5k with oil changes. -- which brings up the questions...what plugs, how old, and at what gap? This could be as simple as $2 spark plugs and a gap tool.