Gentlemen and Ladies
I am getting a PO340 Camshaft Position Error Sensor A (Bank 1 or single sensor)
The car runs every once and a while, but not when hot (just a theory... since I can get to my destination, but not back)
Can this CMP be cleaned, or is it something that I need to replace, or is this indicative of some other problem that won't be resolved by the CMP replacement.
I seek your advice, brickboard.
I did a search for 1998 S70 CMP's and found nothing for this series, is this a rare problem, or am I going to find that the connector is just dirty.
Thanks,
Rich in CO

Your car is the same as an 850, so don't limit your serch so much.

Check the plug for the CPS, clean it. Sometimes tapping the CPS with a screwdriver helps a little. If not, you will need a new one.
There have been times when the cam seal starts to leak, the CPS gets covered in oil and messes up. Then you need to check the crankcase pressure because your oil separator may be clogged, which can lead to severe problems.

Klaus
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Just driving a 1998 V70R :)

Klaus, Found it (I think....Bosch BSH087773 kinda behind and on the drivers side of the engine), but I don't think I've got the dexterity to get that thing off and out of there, let alone getting a new one in there with out messing it all up, is there a secret, or is it just pulling everything out and out of the way and having a lot of patience?
Thanks again for your insight, you helped me with my 240 about 7 years ago if I recall correctly!



Thanks again in advance!

LOL Patience is worth a lot of aggrevation. That is why the suggestion to clean the electrical plug under the rotor area and tap the CMP a little. Yes, you need to make room to get hands in there. It is not as bad as you think. Just give yourself ample time and do it before this cold front gets to you.

Klaus
I have only been around since Aug of 2003, I think? Sometimes it feel like a lot longer :)
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Just driving a 1998 V70R :)

2003? well, maybe it wasn't you... but it was some kind soul on here, I probably just assumed it was you as you seem to be one of the resident guru's around here.

So, and excuse my laziness here... but it was about 35F when I was working on it, but is there a way, however safe or not it is.... to trick the computer into thinking that all is well? like splicing the wires together to trick it into thinking that all is well?

No. The CPS sends pulses through the wire to the ECU, similar to the cap and rotor setup, so the ECU knows when TDC happens. The "old" systems used the CPS to determine if the car was safe to run the engine, once the engine starts the signal is ignored.

Klaus
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Just driving a 1998 V70R :)

Klaus, I got it out, with some patience and some liquid lubricant for the soul. Looks clean and oil free; and I think I will replace it.
Thanks again for your wisdom and support. I appreciate it greatly.
Rich Nell