98 passat # 2 missfire help - 1998 Volkswagen Passat

Be sure to try key on engine off to erase. Try another scanner or program.

Exchange cylinder 4 and 5 parts with 2 other cylinders and see if the problem goes to the other cylinders.Start with this first.

Fuse 14 is for the CCM, Comfort Control Module, and controls the lighting inside the vehicle and also the ignition. Your car will not start with this fuse blown or removed.

Has the timing belt or chain ever been replaced?

coil packs very prone to failing... check compression for good readings (at least 100 - 120psi) if okay try new spark plug as these can fail under load and its the cheapest part to replace to eliminate. if misfire still present swap cylinder 3 coil with cylinder 1 coil and see if fault code moves to cylinder 1. hope this advice helps

1 fuse problem, 2 wires chek that first

The tempreture sensor on my 98 passat was tempremental or just dead and cost £6 from the main dealer to replace, it's one of 2 units together on the front rear just above but against the firewall on a little holder in front of the battery almost.

do a compression test-hot and cold-check distributor cap for wear,cracks etc

Pop the heed, see the air box on the very left? On top of that box is the Ignition Control Unit. Little black square w/ winds about 1/2"
thick....

That is the problem. Or Your MAF sensor...
I don't know how to chech the Ignition Control Unit with out the proper tester.

But the MAF is located directly below in side the box.
If you POP off the large hose that comes out of the front of the air box. You can see the MAF, spreay it some contact cleaner for electronics not BREAK CLEANER>>>>>>.

Regards

DD-
A lot possibilities here, so let's narrow it down as much as possible:
How many miles on the engine?
Has it been well maintained, i.e.: oil changes, tune-ups?
Did the problem start all at once, or did it gradually appear?
When not idling, does the engine perform well, get decent fuel economy, use any oil?
If the engine is mechanically sound, I would suspect a disconnected or leaking vacuum line. Check under the hood with the engine on and listen for a "hissing" noise in the area of the intake manifold... If you have some extra vacuum hose, you can use that in the fashion of a stethoscope... put one end in your ear and probe around the vacuum line area with the other end. Any leaks will come in loud and clear this way.
Other posibilities include bad sensors, leaky fuel injector(s), uneven compression (usually due to poor valve sealing), blown head gasket or cracked head, poor manifold sealing, bad spark plugs/plug wires/distributor cap/rotor.
The good news is that most of the larger auto supplies now offer free computer diagnostic scans, which should help narrow down the range of possible causes and give you more detailed information as to what's going on u nder the hood.
Hope this helps and good luck with the Passat!