Pulled the following codes from the wife's B5.5 1.8T Passat..
07-01-2005, 10:41 PM
#1
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Pulled the following codes from the wife's B5.5 1.8T Passat..
16684 Random/Multiple Cylinder Misfire
16688 Cyl #4 Misfire
17536 Fuel trim Bank 1 (Mult) System too lean
What do you guys think? Looks like I need to replace the coil pack or plug in #4, but what's the deal with the fuel trim code? Car still runs perfectly, I can't feel any ignition misfires...
16688 Cyl #4 Misfire
17536 Fuel trim Bank 1 (Mult) System too lean
What do you guys think? Looks like I need to replace the coil pack or plug in #4, but what's the deal with the fuel trim code? Car still runs perfectly, I can't feel any ignition misfires...
07-01-2005, 11:00 PM
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I wouldn't worry about it if this is the first issue. Reset and see if you get another one
could be lots of things. could be a fuel injector... I'd wait and see what you get again. That's just me though huh. 
07-02-2005, 08:05 AM
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You don't have an ignition amp. Your lean code may be a broken vac hose.
Swap the coil pack into another cylinder, clear codes, and see if the code reappears in the cylinder you swapped to. Misfires are common, a recurring misfire is likely a faulty coilpack.
Did you ever get the coilpacks replaced? 2001's were recalled - check what letter your current coilpacks end in (part number on the coilpack itself). A new set (I would replace all at once if you can spare the cash) will run you $90 from ECS.
Did you ever get the coilpacks replaced? 2001's were recalled - check what letter your current coilpacks end in (part number on the coilpack itself). A new set (I would replace all at once if you can spare the cash) will run you $90 from ECS.
07-02-2005, 10:32 AM
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Like i said, don't fix something that is not broken. there are lots of reasons to misfire
that doesn't mean you have a bad part. Why spend all the money if you don't have to. You may find it is ok. I just think most are too quick to just replace things. Just my thoughts...
Your ignition amps are in your coilpacks on the new cars. That is why there was a recall on the coilpacks, because the same circuit was failing as in the ignition control modules, that so readily fail in the earlier cars.
Your ignition amps are in your coilpacks on the new cars. That is why there was a recall on the coilpacks, because the same circuit was failing as in the ignition control modules, that so readily fail in the earlier cars.
