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Sedans Volkswagen Jetta Volkswagen Jetta Maintenance and Repair
6294 messages, Last post on Dec 07, 2009 at 6:05 AM
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Replying to: elias (Oct 21, 2009 6:15 am)
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Replying to: amy28 (Oct 21, 2009 12:08 pm) From your description, one possibility is that the timing-belt/chain may have "slipped/skipped", resulting in the timing being "way off". |
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| i have a 1999 and a1/2 vw jetta and it has a miss u cant notice it going down the road, but at idel u can definately hear it. check engine light is on and i cant get a code scan tool to uplink to my computer for some reason i need help this is my way back and fourth to college just replaced the cat. converter. and spark plugs, but with out the computer i cant diagnoise anything what do u guys think? about bolth problems | |
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Replying to: piglets2 (Oct 22, 2009 9:16 am) |
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ok i have a 1999 ans 1/2 vw jetta that i just bought and i can not get a code-scanner to uplink to the computer, but the previous owner said that the he had it took to the dealer ship, and they cleared the codes off the computer and when he got it back the radio was taken out. How do i get one to work on my car. dose my after market cd player have to be removed for some reason. what do u guys think? 
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Replying to: piglets2 (Oct 22, 2009 4:30 pm)
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Replying to: piglets2 (Oct 22, 2009 9:16 am) Disconnecting the MAF sensor forces the computer into "default" mode where most of the settings are forced to nominalized settings. (injection pulsewidth, ignition timing...etc) My daughters 2001 had been idling very rough and as soon as I popped the connector from the MAF... it smoothed right out. She has been driving like that for months. Also, if you have not cleaned your snowscreen within the past 12 months... do it! It gets dirty very quickly. I clean the snowscreen on all of my VWs at least annually and I am always amazed how plugged-up it is.
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Replying to: underthevwhood (Oct 07, 2009 8:33 am) 16684 Random/Multiple Cylinder Misfire Detected 16688 Cyl.4 Misfire Detected 17950 Throttle Actuation Potentiometer Range/Performance 17952 Throttle Actuation Potentiometer Signal too High 17953 Throttle Pos.Contr Malfunction I don't really understand what's going on. Some days the car will run fine and other days I think it's going to blow up on me. |
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Replying to: nitekim (Oct 23, 2009 12:40 am) I'm guessing that your Jetta is running reasonably well. How many miles? Years ago, I had the #1 spark plug go bad to the point that the engine wouldn't stay running. I think I had every engine code there was to have. Even though I had one bad plug, it tripped all kinds of codes. Plugs do go bad before there time. I still say the best place to start is the spark plugs. They are not expensive and are easy to replace. Check out the plug wires for any cuts, rips, holes, ect. Look for a whitish gray coating on the wires. If they are grounding out, you may get this. If you have a multimeter, you can check the resistance of the wires as well. Be VERY careful pulling the wires off the plugs. Best to use a special tool for this. I replaced my coil around 90K. Wasn't bad(no codes) but it was getting old. Simple part to replace and don't want to get stuck somewhere because of it. There are internal engine parts that can cause misfires, but think that your post would be much different if you had this. Tracy |
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Replying to: nitekim (Oct 23, 2009 12:40 am) There are only about 2 answers; 1)Poor electrical Power 2)Poor electrical Ground HINT: Remove,clean and tighten EVERY electrical connection you can find under the hood. (disconnect battery 1st)
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