The car runs good, it just had a tune up and oil change, but the check engine light is still on. I know it can't be that big of a deal, but I just wanna know why it is on. I have taken it to part stores to read the code, but no one can find the plug in for it or know how to do it.
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Re: check engine light 1998 VW Jetta
The exact location depends on the type of motor you have. My guess it's behind the plastic cigarette-lighter cover. But it could also be behind any other unused button-placeholders in the center-console or even on the driver-side, near the hood-latch.
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Did you have the oil leak prior to changing the oil? The "change engine oil" indicator is just a service reminder to get the oil changed. You need to reset it. Call your local dealer or check your owner's manual for instructions on doing this. ----------------------------------------------------------------------------- a good ECU Chip Tuning Tool
a car of that year should have an ecu controlling fuel air mix etc. this normally controls the timing. To reset the ecu on my '95 VW Golf disconnect the battery (negative / black terminal) for 15-30 minutes depending on who you ask. So I do 30 minutes. If it has central locking make sure you don't leave the keys in the car when reconnect it. swich on the ignition without starting the engine so the dash lights up with the oil light etc. for 30 seconds then off for 10 seconds. then start your car. It will relearn so it will run a bit rough for a while but should settle down. take it for a spin on different types of road ie. slow and fast.
sluggish/cold start "problems"with any VW group product can be put down,in a lot of cases,to dirty injector nozzles,use redexe/wynns injector cleaner at 1 can to 1/2 tank fuel and you will feel a difference.as for the oil,VW group,use 10/40 semi synthetic in ALL their engines.(except w12 0/40)using a thin oil would pass the rings/valve guides and cause a carbon buildup inside the chamber......try it and see.....
Could be a lot of things, take it to autozone. More than likely they can scan the code for you, they can't tell you exactly what is wrong but they can steer you in the right direction. Give them a call to see if they are able to scan the codes on your VW. Good luck.
The coil pack on these are bad about being defective. You need to check to see if you have power coming from your coil pack. If you do not try changing it out, this produces 60k +/- volts that goes through your ignition wires, to your spark plugs and ignites the gas on combustion with the piston. If it's not giving off a spark, thenyou're not getting power to fire off the engine.
Blinking engine lt. Poor performance-barely make it up a hill.
Mechanic said bad O2 sensor--Replaced--had same problem-
Used "ADVANCED AUTO" Diagnostic meter---FREE FREE FREE
Code read MISFIRE
Replaced COIL pack!!!!!!!!!
Returned to Advance auto to clear codes---
NO CHECK engine light --runs like new
Believe the COIL pack went bad causing the sensor to clog and go bad--Probably could have just cleaned it.
Cost $200 parts and free labor>LOTS of bad words,gerasy hands and good running car
HOPE THIS HELPS SOMEONE
sorry , but no good news, if you are using a fair amount of oil it has most likely reclogged the converter. unbolt the pipe just before converter and run car, if it seems to run better then it is time for a set of rings and another new converter