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Volkswagen Jetta Maintenance and Repair

6629 messages,  Last post on Feb 07, 2013 at 1:54 PM

You are in the Volkswagen Jetta Forum.

What is this discussion about? Volkswagen Jetta, Sedan

Messages Page 585 of 664

#5836 of 6629 VOLKSWAGEN JETTA CHECK ENGINE LIGHT by bridgeatl

Nov 02, 2008 (5:26 am)

Hi I have a 2001 Volkswagen Jetta with a 2.0 Engine. The check Engine light came on late last year....but after many tune ups, many mechanics found nothing wrong with the car. I got a reading from an Emissions Test that said my system was too lean....I've run an Octane Boost and am currently attempting to run a full tank of 93 Premium BP gas through my engine. The light is still on. Why needs to be done at this point. What has usually been the case for 2001 VW Jettas?

#5837 of 6629 Shifting Issues by revmarket

Nov 02, 2008 (7:07 am)

My daughters ' 98 VW Jetta, will only shift if you let up off the gas. This goes for all gears. Once in gear it drives fine until the next gear up. All gears going down are found without any hesitation on the trans axle. Any help? Thanks.

#5838 of 6629 Re: Volkswagen Jetta hesitating [hhutchins] by Mr_Shiftright HOST

Nov 02, 2008 (9:22 am)

Replying to: hhutchins (Nov 01, 2008 11:22 am)
bpeebles is right, this needs attention right away. Being a VW, one is tempted to toss off the suggestion of checking the ignition coils, as these are always suspect on a VW and they would cause this symptom. The codes should be read to verify this.

#5839 of 6629 Re: Shifting Issues [revmarket] by Mr_Shiftright HOST

Nov 02, 2008 (9:23 am)

Replying to: revmarket (Nov 02, 2008 7:07 am)
I'd certainly start by checking the fluid level and if that's okay, have a transmission service done and see if that helps. Could be worn out internal seals, a sticking valve in the valve body, some kind of pressure issue....dunno without more testing.

#5840 of 6629 Re: VOLKSWAGEN JETTA CHECK ENGINE LIGHT [bridgeatl] by Mr_Shiftright HOST

Nov 02, 2008 (9:25 am)

Replying to: bridgeatl (Nov 02, 2008 5:26 am)
If the light is on, there should be a code stored in the computer. Ask them to clear the light, then when it comes on again, read the code. Might be as simple as an 02 sensor.

#5841 of 6629 Re: VOLKSWAGEN JETTA CHECK ENGINE LIGHT [Mr_Shiftright] by bridgeatl

Nov 02, 2008 (12:26 pm)

Replying to: Mr_Shiftright (Nov 02, 2008 9:25 am)
ok...so I don't think it's the O2 sensor because today, I checked the spark plugs and they were all completely burned!!....I last time they were changed was in Fall 2007 I believe....maybe earlier..But it was definitely in spring or fall of 2007. After I did that...I reset the Check Engine light sensor and drove for about 50 miles. the light remained off....so things are getting there...but now I went back to the auto parts store to have them hook their code computer to my car. The Too lean and Catalyst issues are not showing up anymore....but now there is a "Fuel Injector problem in Cylinder 2". The Technician asked if I had just put gas in my car...I told him that I put Premium 93 BP gas +Octane Booster in my car. He Said that that shouldn't trigger the Fuel Injector Code, though. However..THE CHECK ENGINE LIGHT IS STILL OFF!!!...So What do I need to do now?.....because I have a week left before I need to go back to the EMissions place to get my car retested for free before my tag expires. So Let me know ASAP!!! Thanks

#5842 of 6629 Re: VOLKSWAGEN JETTA CHECK ENGINE LIGHT [bridgeatl] by Mr_Shiftright HOST

Nov 02, 2008 (1:06 pm)

Replying to: bridgeatl (Nov 02, 2008 12:26 pm)
So the light's off...why can't you just get tested now?
 
What exactly did you mean your spark plugs were "burned"? What color were the tips? Brown and crusty? Black? Gray ash-like? Were they all the same condition?

#5843 of 6629 Re: VOLKSWAGEN JETTA CHECK ENGINE LIGHT [Mr_Shiftright] by bridgeatl

Nov 02, 2008 (7:04 pm)

Replying to: Mr_Shiftright (Nov 02, 2008 1:06 pm)
Yeah, the plugs were a very dark brown and quite crusty. I believe it was time for them to be changed anyway....It had been about 60,000 miles since they were last changed. With it being an older model car...they probably should have been changed sooner. I'm going to just let the 93 premium fuel run through the system til Thursday to see how the check Engine Light is doing and to clean out the fuel system as much as i can. then I'll take it back to the emissions. Also, it's pretty cold in GA Right now....how much does temperature play in all of this, you think?....

#5844 of 6629 Re: VOLKSWAGEN JETTA CHECK ENGINE LIGHT [bridgeatl] by Mr_Shiftright HOST

Nov 02, 2008 (7:06 pm)

Replying to: bridgeatl (Nov 02, 2008 7:04 pm)
Before you do an emissions test, you should have been running the car HARD and HOT on the highway. You can also buy this "pass emissions" snake oil and some techs tell me it can work in certain cases. They (the snake oil maker) give you your money back if you fail, so why not?

#5845 of 6629 Re: VOLKSWAGEN JETTA CHECK ENGINE LIGHT [bridgeatl] by bpeebles

Nov 02, 2008 (8:05 pm)

Replying to: bridgeatl (Nov 02, 2008 5:26 am)
I would put MONEY on the fact that your MAF (Mass AirFlow) sensor is failing. There was a "factory extended warantee" on your MAF because VW knew there was a problem with MAF.
 
BOTH of my daughters 2001 VWs had their MAF replaced for free under this "extended warantee".
 
Since I have a VagCom , I was able to diagnose their bad MAF. (running lean and/or rich)
 
One way to help diagnose a bad MAF is to disconnect the electrical wire and drive the car. If it runs better, the MAF is definatly bad.

Messages Page 585 of 664

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