V6 2.5 litre GV.

I think I need to change my Camshaft Position Sensor, as I'm getting the first signs of failure - intermittent total cut-out after starting a warm engine on a very hot day.

I've got a replacement coming, but the securing/adjusting bolts need to be undone - can't see the heads, but I think its a hex-shaped recess taking an Allen key.  Tried them, but they don't want to move, and I fear I'm rounding the recess.

Does anyone know for sure what they are, please?

Have you tried a mirror ?  Something at the back of my mind says it's a Torx T40 but I could be wrong.

V6 2.5 litre GV.

I think I need to change my Camshaft Position Sensor, as I'm getting the first signs of failure - intermittent total cut-out after starting a warm engine on a very hot day.

I've got a replacement coming, but the securing/adjusting bolts need to be undone - can't see the heads, but I think its a hex-shaped recess taking an Allen key.  Tried them, but they don't want to move, and I fear I'm rounding the recess.

Does anyone know for sure what they are, please?

I think on the newer engine they combined the cam sensor with the cam synchronizer.  But even on my older trackers, I just ended up using a pair of vice grips to remove the hex/torx bolts and then replace them with 'normal' bolts.  I'll check and see if any of the FSM's I have cover the V-6 for you...
NV

Thanks for the replies!

Tried the mirror, and I think it is torx, but that won't grip either (probably hasn't moved for 12 years).  On the V6, there is no way of getting a vice grip on the second bolt, because of accessibility.  The first can be got at, but it's a domed head - how would you grip that?

I've now got a CEL which points to the MAF sensor being the problem, so the urgency to move the cam sensor is gone, but if I need to change it, maybe the engine would have to come out!

It is a Torx head bolt, I just verified it on my spare 2.5 engine. It's slightly larger than a T30 (the largest one in MY kit), but not by much. T35?

You can try tapping on the mounting BASE and bolt heads of the CPS with a dull chisel in an attempt to loosen up the bolt tension a bit. That should allow you to remove the bolts with lessened torque.

DO check out any other potential problem areas first though, as those sensors aren't classified as high failure items, except in the 4-cylinder versions, where they tend to be a more prevalent a problem, I've noticed.

It is a Torx head bolt, I just verified it on my spare 2.5 engine. It's slightly larger than a T30 (the largest one in MY kit), but not by much. T35?

You can try tapping on the mounting BASE and bolt heads of the CPS with a dull chisel in an attempt to loosen up the bolt tension a bit. That should allow you to remove the bolts with lessened torque.

DO check out any other potential problem areas first though, as those sensors aren't classified as high failure items, except in the 4-cylinder versions, where they tend to be a more prevalent a problem, I've noticed.

I've ordered some replacement bolts (useful if I ever get the originals out), so I'll be able to check, but you're right that T40 is too large.  Maybe T30 is too small - I currently don't have anything in between.


I've just replaced the MAF sensor (not spared by Suzuki - you have to buy a complete throttle body) so I got one from a breaker - Hitachi AFH55M-13 if anyone else needs to know.  Problem seems to have gone 

So I now have a spare CPS with new bolts and O-ring - oh well, it still was less than going to the dealer and paying for a new throttle body!

I've been doing a bit of research and there ARE T-35 Torx bits available out there, it's just not typically found in a generic set.

Funny, some folks refer to the odd size as a "Frankenstein" bit or a "Security" bit size.

http://www.abbeypowertools.co.uk/subprod/torx-insert-bits-0002047.aspx

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=220578624946&rvr_id=&crlp=1_263602_263622&UA=WXF%3F&GUID=b10ba7af1250a06c21c2a542fff5497b&itemid=220578624946&ff4=263602_263622

Max - the "security" refers to the hole in the tip and has nothing to do with the size - tamper proof or tamper resistant Torx screws have a peg in the middle to prevent a regular Torx tip from being inserted.

Yeah, I know.

Thanks for that - I would certainly spend $2.99, but the $15.99 for international shipping gives cause for thought.

Oh I understand. I just threw that out there for reference. Hopefully you can acquire one locally as they DO exist in that odd size that apparently will fit your needs. 

Thanks, you're quite right.  I found one locally:

http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=150448697178

Not bad, with free shipping.

Nice lil' set! 

Please confirm for us the Torx bolt head size once you remove those buggers.