99 vw jetta vr6 transmission issues

[ForestJetta]

Ok so I'm brand new to this site and brand new to volkswagon. I just purchased a 99 vr6 jetta yesterday with 100k miles on the engine and tyranny. I believe I'm experiencing limp mode. Its an automatic transmission by the way. Its throwing a speed sensor code and a gear code of some sort. The linkage is off because its in drive on the dash and in 3rd on the shifter. I was experiencing what seemed to be just stuck in 3rd gear and then sometimes it shifts fine and hem it shifts at 4 grand and letting off the accelerator but wont shift into overdrive. This is what I'm currently experiencing and any input is greatly appreciated.

[Stangrcr1]

Glad to see you have done some of the basics, like search and read about similar issues.

When the TCU can't read speed, it doesn't know when to shift.

Third gear only is limp mode.

The linkage being off makes me think someone screwed with the tranny before you got it.....

If you bought it from a dealer, take it back.

[ForestJetta]

I bought the vehicle from a private seller and I want to keep and fix it. I actually bought it from a Volkswagen guy I work with and hes owned nothing but volkswagens and he had someone do the work for him but obviously it wasn't professionally done. Please help me lol.

[Stangrcr1]

I always live by the idea that I wouldn't sell anything I have to a friend. And your car is just one reason why.

Until you get the sensors fixed, it won't work.

You need to find out exactly the codes so we know which sensor(s) are out.

Could be as simple as a bad engine ground...

[ForestJetta]

Autozone shows there are two speed sensors. One on top of the transmission and one on the back. I ordered the one on top and if it doesn't work ill try the one on the back.

[ForestJetta]

Ok I took my pocket scanner and scanned it because advances wouldn't pick up any codes nor would my Volkswagen friends scanner. Pretty sad that mine is the only one that picks up codes. Anyway here's the codes man. Ive got a p0722, p0732, p0733, p0734, and p0722 again I'm guessing its in que again.

I found out thar codes 32 through 34 are incorrect gear ratio codes for gears 2 through 4. Code p0722 is the output speed sensor for the transmission.

More than likely the gear ratio codes will lead to the output speed sensor I'm guessing.

[ForestJetta]

Here's the sensor that I ordered which appears to be the G68 I believe. http://www.autozone.com/autozone/par..._154004_0_1277

[Stangrcr1]

Your link looks like the G68 which is the output speed sensor. The other speed sensor is about 3 inches towards the motor from the G68. It is the G38 which measures drum speed.

Since it looks like someone had the trans out, I would check and recheck all the electrical connectors first. The G68 cable and the main cable for the solenoids come up to a bracket on top of the diff and have connectors there. Marked as "solenoid connector" in below pic.

The G22 sensor is the output to the speedometer.

F125 is the multifunction switch for reverse lights, etc.

Pic here

Thanks to CoolAir and KansasCityTDI.com for the pic.

[ForestJetta]

Alright I checked all the connectors you were talking about and there were no signs of debris or anything inside them and they were all connected like they should be. I cant seem to get the connector with the metal clip to clip back around it though but I couldn't imagine that being a problem. One thing I noticed is that I thought the linkage was out of adjustment but it wasn't the shifter itself is messed up and is not locking all the way in neutral like it should.

I cant figure this out but after I turn the ignition on and wait for the dinging and lights to go out all the gear lights on the dash light up all at once and stay that way until I return the key.

So replace the G68 for the p0722 code correct? And what about the dash light fix?

[ForestJetta]

Bump

[ForestJetta]

Replacing the G68 Sensor fixed the problem. Thanks for all your help and support Stangrcr1.

[Stangrcr1]

Congrats