Can anyone tell me what's wrong here?

Question 1
Can anyone tell me what's wrong here?...  I have a '98 VW Passat. Sometimes when I stop at a light for long periods, My car's RPM's drop considerably, then jump back up, and the car starts sputtering, like it wants to stalling out. When I move the car after the light turns green, the car sputters while moving, with the RPM's going up and down, and then shooting up to like, 3000 or so RPM's. Can anyone tell me what wrong? Hope it's not expensive to fix...
I just recently took the car for a tune up...got new spark plugs (but same coils/wires)
And I Don't have a CEL (Check Engine Light) either...which makes it more complicated. (CEL comes on when the car is on, but the engine is off...But I think that's normal...)
And I got a new Fuel Filter and Air Filter...

Answers
1)   Sounds like your spark plugs need some changin cause I had a similar experience with VW. Get a Tune Up and I'm betting it will fix your problem! - BIGtymer

2)   Wires could be worn- you didn't state mileage, also coil packs may be going, but no CEL. Or, the O2 sensors are bad- I am leaning more toward that issue. - djaca70

3)   Sounds to me like vacuum is low. Check your intake boots and hoses. It could also be low fuel pressure. It's not spark as that would cause a check engine light to come on as a misfire. - uthockey32

4)   possible:mass airflow sensor dirty,idle air /fuel stabalizer dirty or broken /non functional, catalytic converter plugged, trans issue if automatic ? or if turbo maybe intercooler leak or vaccum issue id check the MAF sensor then the catalytic converter but check for leaks of vaccum - Drift Ninja


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Question 2
Where is the engine mount sensor on a 1988 VW Beetle?...  Car keeps cutting out and apparently its the engine mount sensor does anyone know where about in the engine bay it is?

Thank you.
Sorry Typo 1998!

Just going on what I've been told, must be crank position sensor.

Answers
1)   ENGINE MOUNT SENSOR?? what is this?? - AzaBoom

2)   You mean the crank position sensor. Left side, you cannot miss it. - djaca70

3)   There were no VW Beetle's produced in 1988 and there is no such thing as a engine mount sensor. - Hoppelemine


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Question 3
Sticky/Locking stifle and jumping?...  My welsh mare is 4, she was giving away to me 7 months as has a sticky/locking stifle, however i've not done anything other than light schooling and hacking and its not locked once, would it be ok to start jumping her???

Answers
1)   YEAH, A JUMP START WILL GET HER GOING FOR SURE!
IF NOT PLAN ON HORSE MEAT SANDWICHES FOR A
L O N G TIME. - mchaz60

2)   I didn't know Volkswagen made horses. Perhaps your question is in the wrong category? - Tufty the Squirrel

3)   Oh yeah. you own one of those really RARE VW's.. the Welsh model.

Jump starts were not always necessary especially if it was unlocked, but just be VERY careful where you connect the cables. You can really get quite a kick if you hook them up wrong.

.(You DO realize you posted this in the VW section - right?) - Good luck with your Horse.. sounds like a better ride for short trips . - ca_surveyor


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Question 4
what is the difference between a early 68 vw and a late 68 vw?...  

Answers
1)   one is from germany the other is from south america/brazil - ken k

2)   About 9 months. - ca_surveyor

3)   Go on thesamba.com, they will outline the differences. - djaca70


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Question 5
wherw is the oil dip stick on a 2002 passat?...  

Answers
1)   If its a 1.8T the dipstick should be sticking out of the middle of the middle of the intake manifold, right around the center of the engine bay. - Nick

2)   If you're having trouble finding the dipstick I'm going to assume you have the 30V V6 motor. The dipstick is under the left engine cover. Here is a pic of the motor will all the covers removed to give you a better idea:

http://i267.photobucket.com/albums/ii285/2deepn2dubs/atq3.jpg (you can see the bright orange dipstick in the lower left of the picture)

Here's a picture of the motor with all the covers on for reference: http://i.ebayimg.com/01/!!fDh9LgBWE~$(KGrHgoH-CcEjlLlzSkuBKZR0ezI2Q~~_4.JPG - gti_4cefed4


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