[Highlander1010]

I've got a 2.0L 2002 Jetta 5-spd manual that I love to death. Up until about 6-7 months ago everything was fine, but now there's a problem.
I was averaging 31-32 mpg all highway and 27-28 mixed driving. Now I'm doing 80% city driving and barely getting 20 mpg.
What the Heck is going on? I'm not overly agressive, I'm not driving stop n' go, mostly averaging 35-40 mph and not waiting too long at any lights.
WHAT IS UP?

Thanks in advance.

 

[Maflagulator]

Re: What's WRONG! HELP! (Highlander1010)

air filter? old oil? soft tires? it's hot out so your running the A/C?

 

[Highlander1010]

Re: What's WRONG! HELP! (Maflagulator)

Quote, originally posted by Maflagulator »

air filter? old oil? soft tires? it's hot out so your running the A/C?

Clean air filter.
New synthetic oil 10w-40 castrol.
Tire pressure is good.
Not running a/c.

 

[RQtechVR6]

Re: What's WRONG! HELP! (Highlander1010)

Have you changed anything at all since you noticed the change in mileage?

 

[bluebora20v]

Re: What's WRONG! HELP! (Highlander1010)

check O2 sensors, maybe maf...?

 

[T1VW]

Re: What's WRONG! HELP! (Highlander1010)

You know, i have noticed that too lately, and i drive a 2.0, but i drive it hard at times, or as i like to call it, Spirited Driving

So maybe thats why im loosing gas fast, but it really does seem like its burning faster on the 2.0, just like the OIL burns faster on the 2.0

and on top of all of that, they are still slow

Good luck with it, take it to VW and let them know, and then give us an update.

 

[Highlander1010]

Re: What's WRONG! HELP! (RQtechVR6)

Quote, originally posted by RQtechVR6 »

Have you changed anything at all since you noticed the change in mileage?

I haven't done anything I wasn't doing before. I've been changing the oil every 4k approximately, same type of gas, same type of driving, no mods for performance. I just can't figure it out, and frankly, I don't trust VW to figure it out either.

 

[abeR]

Re: What's WRONG! HELP! (Highlander1010)

have you run it for codes?
coolant sensor?

 

[AYellowGTI]

how about spark plugs??

 

[Highlander1010]

Re: (AYellowGTI)

I haven't seen any codes apear on my console, but I haven't checked the computer yet. I also haven't checked the plugs. That's my next check too.
Silly question, but could it be an oil weight problem?

Thanks everyone for your help!

 

[kaljer]

Re: (Highlander1010)

Dirty air filter?

 

[maestro67]

Re: What's WRONG! HELP! (Highlander1010)

Maybe...just maybe, your injectors are clogged or dirty. Get one of those injector cleaners and see what happens.

 

[gas meet foot]

Re: What's WRONG! HELP! (Highlander1010)

Quote, originally posted by Highlander1010 »

Not running a/c.

It never ceases to amaze me what summer outside of Texas is like.

 

[Highlander1010]

Re: What's WRONG! HELP! (gas, meet foot)

Quote, originally posted by gas, meet foot »

It never ceases to amaze me what summer outside of Texas is like.

Yeah...living 1 block off the beack in SoCal doesn't suck. That's for sure. http://****************.com/smile/emthup.gif

http://****************.com/smile/emthup.gif
Thanks everyone for the suggestions! I'll be looking into it all this next week.