Thought I should leave a thread with some research for the benifit of other member down the line
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Cam sensor: Research for a 2.0 ltr pre-facelift
For a Vauxhall pre-facelift 2.0 litre simtec engine there are 3 cam-sensor available in the market. Listed below are the 3 with their part numbers (hope this helps any one else having the problem in the future)
Part number:
90458252 – This was the original cam sensor which came with you car & your car should still have this type if the cam-sensor was never replaced. This one comes with a square ends and will fit without any soldering of looms being required. VX do not sell this part any longer by OEM parts are widely available at the time of writing (Feb- 2010). Pattern parts are not recommended as they are unreliable. This is the least preferred alternative as the loom might have worn out as well and can fail yet is the simplest solution to keep you going in the short term.
Part Number:
93171450 – This part was the upgrade & replaced the original cam-sensor. If you car ever had a cam-sensor replaced professionally then you might have this part on your car. This comes with a short wiring loom & has round corners. This is the new type of cam-sensor and the short length of wiring loom needs to be soldered on the existing wiring loom. If you aren’t handy with soldering you might want to consider this being done professionally. VX no longer supplies this part either (oh, yes). OEM parts are widely available the time of writing (Feb- 2010). Pattern parts are not recommended as they are unreliable. This is the cheapest alternative to upgrade to the newer version of the cam-sensor and has the advantage of your wiring loom being replaced as well i.e. less cause of failure
Part Number:
9201903 & 24445139 – These are VX’s latest take on the cam-sensor for your beloved car. One of the part numbers is a wiring loom and the other the actual sensor. If your car still has the original cam-sensor and you are keen on replacing it with VX supplied parts you will have to pay for the 2 and can buy them from a VX dealer at the time of writing (Feb – 2010). The wiring loom here is longer in length (not quite sure why) and needs to be soldered on like the intermediate part number (93171450). This is the most expensive way of replacing your cam-sensor but you are expected to get piece of mind and some reliability back into you car. Pattern parts are not recommended as they are unreliable
Now, back to problem in hand – I was supplied ‘93171450’ when I actually ordered ‘90458252’ (per above mine are OEM parts – Siemens) called the supplier and he replies “we assumed you would want to upgrade to the new version and hence supplied this part- we were expecting your call”. Now this assumption was made after I called them and specially mentioned I am ordering the old one

. Requested sensor (old part number) is on its way and I should have it in the next couple of days!

Hope this helps!