Need Major Help With Jetta 1.8t - VW Forum :: Volkswagen Forum
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post #1 of 6 (permalink) Old 01-30-2011, 12:05 AM Thread Starter
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Angry Need Major Help With Jetta 1.8t

Hey guys im new to the site and natrually my first post is a need help post, So here it goes

My fiance has a 2002 jetta 1.8t and sorry to say its a P.O.S

These are the problems I cant figure out and they all happened the same day at the same time

1. I just replaced the coil packs last week Because It was running like crap had no power along with the bad smell and flashing CEL, scan tool said Cylinder misfire in cylinders 1,3,4..Well it ran fine for about 60 miles with brand new coil packs in it then out of nowhere the same problems came back, no power bad smell flashing cel and scan tool says cylinder misfires again, So im so confused...Any Ideas???

2.The car kept over heating So when my fiance got home I checked it out and a coolant line for the turbo busted I replaced the same hose about 2 months ago...and the cooling fans didnt come on unti I played with the fan Fuses????

3.Now the big problem While she was driving there was another hose that just felt apart it comes off the air intake goes to a Y shape and runs down the head well that fell apart and was shooting all kinds of smoke out smelled like a mix of exhaust and oil so I let the car cool down and checked the oil it was bone dry, I didnt see any leaks but I gave the car an oil change just a week ago, That scares me ..........Do you know what that hose is called sorry I cant post pics but it completely fell apart as I was taking it off

4.I think the turbo oil seals are shot because if the car sits at an idle for about 10mins or longer it starts to smoke bad then clears up after driving it for awhile

If you have any ideas what could be going on with any of these 4 problems please lend advice thanks, By the way the car is all stock with 107k miles

Last edited by boosted1993; 01-30-2011 at 12:07 AM.
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post #2 of 6 (permalink) Old 01-30-2011, 12:21 AM
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sounds like the rings might be fried on this. but that hose you're talking about is emissions crap. they always go out on these. its a breather line. if you talk to the dealer, they'll know exactly what it is. and the coil pack issue, well its not usually the coil pack if 3 of them are going. check the wires going to the coil packs and see if they're cracked. they usually dry out and short out on one another. or the missfires could be from a vacuum leak as well. hopefully that will help you out

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post #3 of 6 (permalink) Old 01-30-2011, 12:54 PM
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2. The fuse thing with the fans is common. You might need to clean up the contacts on those fuse holders. Make sure they're not burnt up.
Fans not running could have contributed to your overheating problems.

3.Breather hoses, another common problem at the age of your vehicle. Unfortunately, when you start messing with that Y-hose you'll likely find that the T-hose that connects down to the crankcase breather port is also going to be wasted. You can replace them with a silicon hose kit from Forge or 034Motorsports also have quite a complete kit for less money than the VW hoses. These hoses can contribute to misfires.
Here's what you'll need too replace the breather hoses from 034Motorsports
You can replace a bunch of that stuff with a catch can - depends how project minded you are.

1. Did you buy a full set of VW ignition coils - best to replace them all at once. There is a VW recall on these - did you get that done? Your new coils might be under warranty if you got them from VW directly.

The oil being bone dry does not sound good. Did you bust a coolant hose or an oil hose to the turbo?
Other common problem at the age of that vehicle is leaking valve cover gaskets. When you changed the coil packs hopefully there wasn't pools of oil sitting around your spark plugs.
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post #4 of 6 (permalink) Old 01-30-2011, 01:27 PM Thread Starter
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Thanks for all the Quick replys,

Im going to order that hose kit asap

And the coolant line is the the turbo cooling line, Im sure she didnt bust an oil line because there is no oil spray on the engine and no oil puddles on the ground

I pulled the spark plugs out and they are all dry and look normal, I also looked at the top of the pistons through the sprak plug holes the top of the pistons look dry,

Im going to do a compression test tomorrow, what type of numbers should I be looking for as far as goosd compression is concerned

As far as the fans are concerned Im going to clean and inspect the fuse block and see where that goes...Thanks agian for your help
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post #5 of 6 (permalink) Old 01-30-2011, 04:41 PM
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Compression should be 150 to 175 psi., 175 across all cylinders would be ideal.
Just so all cylinders are consistant with no more then 10% between your lowest and highest #
Make sure you pull ALL the spark plugs and block the throttle open for the test, or it will be a false reading.
Not sure if a 2002 throttle is drive by wire like the newer cars, so while your cranking for the test, press the accelerator down so the throttle body flap opens.

EDIT. The engine needs to be warm also for the test, the #'s will be higher when the cylinders are cold, but it's not a true reading

This is from a bently manual

Compression Test directly from Bentley Manual.
1. Release locking pins for engine cover by turning 90 degrees. Remove the cover completely.

2. Warm up engine until it is a minimum of 30 degrees Celsius (60 degrees F) and switch ignition off.

3. Disconnect 4 pin harness connectors from all ignition coils and
remove ignition coils (Place them in a way that you know which ones are for each cylinder). If you have an AWD engine code unbolt the coils from the head and remove the vacuum reservoir (canister).. If you have an AWW or AWP engine code just remove the coils.

4. Use compressed air to clear area around spark plugs. Remove all spark plugs and lay aside in an order that you remember which one goes to each cylinder.

5. Remove fuse #32 for voltage supply to injectors (in car)

6. Fit compression tester into spark plug hole.

7. Have a helper - Depress clutch pedal fully, Put transmission in either park or neutral, Depress the accelerator pedal to floor, Crank engine over with starter motor. Crank a minimum of 4 to 5 revolutions.

8. Record readings from each cylinder in gauge and repeat procedure for each cylinder.

9. Compare readings to these specifications. New Cylinders (145-203 psi) Wear limit (102 psi) Maximum difference between cylinders 44 psi

10. When all cylinders have been checked, reinstall spark plugs and ignition coils, connect harness connectors for coils and reinstall fuse #32. Reinstall fuse panel.

NOTES Cranking engine with ignition system disabled and components disconnected will cause Diagnostic trouble codes (DTC's) to be stored in engine management system memory. You must clear these codes.

Tightening Torques Spark plug to cylinder head - 22 ft/lbs

Tightening Torques Ignition coil to cylinder head (If bolt down coils) - 7 ft/lbs.

Enjoy !

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Last edited by Maxximus; 01-30-2011 at 05:18 PM.
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post #6 of 6 (permalink) Old 02-04-2011, 02:59 PM Thread Starter
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I ordered the breather hose kit from 034 Motorsports on the 31 of january and Today I still have not recieved a shipping tracking number or anything, So I called down there to see whats going on and the guy told me he wont be able to ship my hose kit for about 2 more weeks, I even paid for the 2 day air, He said he sent me an e-mail telling me what was going on but I never recieved any type of e-mail from them, So I will not be dealing with them ever agian,

I noticed that the wires for the coil packs are bare in spots So I fixed that and the cooling line that busted, Now only if I can get those damn breather hoses sometime this month I might be able to finish working on this damn nightmare................
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