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Discussion Starter · #1 ·
Yesterday replaced the spark plugs which looked like the originals and TCV (OEM). The car is running at least 20% better...no hesitation, stuttering and pulls like an ox....<p>This morning after 40-50 miles of driving I have a CHECK ENGINE light...????? Still runs perfect. Did I need to pull a fuse, reset anything, unhook battery? <p>Going away for the long weekend don't want issues...Thanks.
 

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Are you sure they are OEM-style resistor plugs and are you sure the TCV lines are in correct order?
 

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Re: ???Check Engine Light??? (Blurry)

If you did not go through the adaptation process with the new TCV, based on your initial post I am guessing that you over boosted on a hard pull or hard shift and threw a code. The ECU has to relearn how to handle boost when you change out the TCV. Go to get it cleared but document the code and look it up to ensure that it was not something else. That is my hypothosis <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/biggrin.gif" BORDER="0"> .
 

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Discussion Starter · #4 ·
Re: ???Check Engine Light??? (kmg_S60R)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>Phuz</b> »</i></TD></TR><TR><TD CLASS="quote">Are you sure they are OEM-style resistor plugs and are you sure the TCV lines are in correct order?</TD></TR></TABLE><p>They are the longer R OEM style plugs P/N272313-8 and the TCV lines should be correct I'm trusting the mechanic knows what he's doing...I hope. If they weren't, wouldn't it throw the engine code immediately?<p><br><TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>kmg_S60R</b> »</i></TD></TR><TR><TD CLASS="quote">If you did not go through the adaptation process with the new TCV, based on your initial post I am guessing that you over boosted on a hard pull or hard shift and threw a code. The ECU has to relearn how to handle boost when you change out the TCV. Go to get it cleared but document the code and look it up to ensure that it was not something else. That is my hypothosis <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/biggrin.gif" BORDER="0"> .</TD></TR></TABLE><p>What is the adaptation process???? The mechanic didn't give me any instructions on what to do once installed. Is there anything I can do now other than enjoy the new power and wait till Tuesday and have it cleared and try again? Can I unplug something? Unhook battery? Mechanic is gone till Tuesday. Can someone outline the adaptation process please? thanks.<p><br>I read this somewhere....should I try it? <br>....had some major overboost issues.....suggested to do a hard reset of the ECU. <I><U>Remove the battery terminals and touch them together for a few seconds</U></I>. <p><br><BR><BR>
<i>Modified by Blurry at 9:06 AM 5-22-2009</i>
 

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Re: ???Check Engine Light??? (kmg_S60R)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>kmg_S60R</b> »</i></TD></TR><TR><TD CLASS="quote">If you did not go through the adaptation process with the new TCV, based on your initial post I am guessing that you over boosted on a hard pull or hard shift and threw a code. The ECU has to relearn how to handle boost when you change out the TCV. Go to get it cleared but document the code and look it up to ensure that it was not something else. That is my hypothosis <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/biggrin.gif" BORDER="0"> .</TD></TR></TABLE><p>I didn't think there's an adaptation needed for the OEM TCV. The reason you need an adaptation for the IPD unit is that it reacts much more quickly than the stocker, and the ECU has to learn the new reaction time. <p>OEM to OEM i've done that twice with no adaptation and no ill effects.
 

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Re: ???Check Engine Light??? (Blurry)

The adaptation process is used whe switching from a worn or failed OEM TCV as the ECU has tried to adapt to the crappy not working one or when switching to a HD TCV like the one IPD offers. You all you need to do is drive the car briskly at like 1/2 to 3/4 then finally full throttle a few times so you give the ECU time to learn how to react to the TCV.<p>You can do a hard reset though you will probably need to make a trip to an auto shop and ask to borrow an OBDII reader to clear the code or have one of the employees do it for you. <IMG NAME="icon" SRC="http://********************/smile/emthup.gif" BORDER="0">
 

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Discussion Starter · #7 ·
Re: ???Check Engine Light??? (kmg_S60R)

My VW mechanic told me to swing by and he'll clear the code for me so I'm heading over there in an hour...I'll make sure I write down the code in case it's something not related to the TCV. <p>I'm just surprised that after the TCV was installed yesterday, I drove it on city streets a couple miles then on the highway for 25 miles then a few miles on backroads to my house (never at full boost)...and then this morning on my way to work I decided to push the car to full boost and it pulled great and that's when the "CHECK ENGINE" light came on. Still runs great. <p>I'm sure the mechanic knows this but could the spark plugs not being gapped correctly (.028 - .030) or torqued to the 22ft/lbs cause a check engine light; I wouldn't think so?
 

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Re: ???Check Engine Light??? (Blurry)

I have a high boost DTC but no CEL...
 

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Discussion Starter · #9 ·
Re: ???Check Engine Light??? (S60R1)

VW mechanic read the code TO234 (high boost) or something. Reset it and I drove back to work trying to follow the proper proceedure....no "CHECK ENGINE" for the time being. I'll continue to drive at 1/2 boost for a bit longer and slowing down like I should several more times and see if that's what it was....<p>Is the TO234 a code I need to be concerned about if it comes back or anything?
 

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Re: ???Check Engine Light??? (Blurry)

No, not unless it is for a different reason. Excessive and harsh boost spikes over and over and over can destroy an engine (Take emphasise on it having to happen alot to get to that point) Now with a crap tune you can ruin an engine pretty quick, but I belive you are stock for the most part. <IMG NAME="icon" SRC="http://********************/smile/emthup.gif" BORDER="0"> <p>Next time you drive it don't be shy to get the throttel to the floor just pick say third gear at 20 miles per hour and start getting into the throttle and by 50 have it at the floor... The point is to build boost slowly to avoid spikes do this a few times each time accelerating the process. Example<p>Run 1: 20 - 50 = Full throttle<br>Run 2: 20 - 40 = Full throttle<br>Run 3: 20 - 30 = Full Throttle<p>You get the idea but you should not continue to throw CEL after that is done. if you do you may have just uncovered another issue by replacing the TCV. <IMG NAME="icon" SRC="http://********************/smile/emthup.gif" BORDER="0">
 

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Discussion Starter · #11 ·
Re: ???Check Engine Light??? (kmg_S60R)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>kmg_S60R</b> »</i></TD></TR><TR><TD CLASS="quote">No, not unless it is for a different reason. Excessive and harsh boost spikes over and over and over can destroy an engine (Take emphasise on it having to happen alot to get to that point) Now with a crap tune you can ruin an engine pretty quick, but I belive you are stock for the most part. <IMG NAME="icon" SRC="http://********************/smile/emthup.gif" BORDER="0"> <p>Next time you drive it don't be shy to get the throttel to the floor just pick say third gear at 20 miles per hour and start getting into the throttle and by 50 have it at the floor... The point is to build boost slowly to avoid spikes do this a few times each time accelerating the process. Example<p>Run 1: 20 - 50 = Full throttle<br>Run 2: 20 - 40 = Full throttle<br>Run 3: 20 - 30 = Full Throttle<p>You get the idea but you should not continue to throw CEL after that is done. if you do you may have just uncovered another issue by replacing the TCV. <IMG NAME="icon" SRC="http://********************/smile/emthup.gif" BORDER="0"> </TD></TR></TABLE><p>Thanks....I was told to do the following:<p>5 minutes (no boost). Accelerate to 1/2 maximum boost and hold it there for 5-7 seconds. Deccelerate to below 30 mph. Repeat 4 times, turn engine off for 12 minutes....perform this twice. For the time being I stayed off boost and drove it to work and no lights...
 

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Re: ???Check Engine Light??? (Blurry)

<IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/biggrin.gif" BORDER="0"> Sounds like great advice as well! Either way you are giving the ECU of the car time to learn and adapt <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/smile.gif" BORDER="0"> <IMG NAME="icon" SRC="http://********************/smile/emthup.gif" BORDER="0"> <IMG NAME="icon" SRC="http://********************/smile/emthup.gif" BORDER="0">
 
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