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Discussion Starter · #1 ·
I have been having this on going problem since last year. I was having problems using my cruise control and starting my car, it would take a number of key twists to start the car, until one day it just didn't start. Diag'd to be a clutch position sensor after a trip to the dealer. A few months later, and the thing went south again, and again. I had this sensor go almost every 6 months to the day, I'm now on my 3rd, and that one just decided to go down the crap shoot. It seems as though it's just not reading where the clutch is properly because while driving if I push the pedal down about 1in., the cruise will work.<p>I talked to the tech that did it, who has 30+ years of working on Volvos under his belt, thinking maybe there maybe something bigger wrong with my car. Unfortunately, he said there's really nothing else down there that can cause a failure. Now I'm just wondering if anyone else has had this problem in the past?? Or if anyone has ANY ideas?
 

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Re: Clutch Position Sensor Problems... (MancUnited1)

Clutch Postion Sensor(CPS) is simply a slide potentiometer.<br>They could fail in 2 ways(assuming they're not defective to start with)...most common is too much current(voltage spikes, short, etc.)...another way is mechanically break down(slider wear, improper use ).<br>Have you diagnosed the root cause of the failure (electrical/mechanical)? How did the failed sensor look like? (dirty/clean, dry/wet, any oxidation/cracks?)<p>You could try testing your old one and see if it's really broken,<br>Here's the specs:<br>supply voltage= 5v<br>Unaffected pedal=1400-2400 ohms 3.3v<br>Fully Depressed pedal= 200-800 ohms 2.2v<br>terminals 2 and 4<p>
 

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Discussion Starter · #4 ·
Re: (imageomega)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>imageomega</b> »</i></TD></TR><TR><TD CLASS="quote">Seriously? You state the problem and the answer in your post. Figure it out.</TD></TR></TABLE><p>How do you figure? <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/sly.gif" BORDER="0"> <p>Btw, when you start a statement with "Not to be an ass", we all know what that means - well, that is, until you edit it.
 

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Re: Clutch Position Sensor Problems... (MancUnited1)

Eh, my bad. My eyes skipped over the "if" in this sentence....<p><TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>MancUnited1</b> »</i></TD></TR><TR><TD CLASS="quote">while driving if I push the pedal down about 1in.</TD></TR></TABLE><p>Doh <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/sly.gif" BORDER="0">
 

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Re: Clutch Position Sensor Problems... (imageomega)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>imageomega</b> »</i></TD></TR><TR><TD CLASS="quote">Eh, my bad. My eyes skipped over the "if" in this sentence....<p>Doh <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/sly.gif" BORDER="0"> </TD></TR></TABLE><p>Haha, no problem. If I drove my car like that, I'd have MUCH bigger issues that a little electrical switch haha.
 

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First of all, I hope they're not charging you a lot of labor to change that switch, it's literally a one minute unsnap-snap in job. You don't even have to remove the trim down there.<p>I also have this problem, but mine was caused by the switch being soaked in brake fluid. My clutch master cylinder is leaking. <p>Obviously the tech didn't say anything to you about it but did you ask him if he saw anything out of the ordinary, like fluid? Or did you look at the parts yourself after he took them out? <p>Maybe reach up in there and feel, if your fingers come back with brake fluid on them that could easily be the problem. Just follow the pedal arm up until you feel the cylinder rod, then follow that towards the firewall until you feel the switch, which snaps on to the bottom of the master cylinder.<p>Here is a cylinder without the switch snapped on, it goes on the two ball joints you can see here (the white one and the black one just above the stud):<p><IMG SRC="http://www.slaptardcentral.com/gallery/files/6/trans_30.jpg" BORDER="0"><p>And in the car: (this is from my C70, but it's the same switch in the P2 cars, at least on my '01 it is.)<p><IMG SRC="http://www.slaptardcentral.com/gallery/files/6/trans_31.jpg" BORDER="0"><p>Dunno if that helps at all.
 
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