V8V tyre valves
Discussion
I decided to take peoples advice on here and replace my seized on metal tyre valve caps with plastic ones.
None of them would undo by hand even after soaking overnight in WD40, but with mole grips I managed to remove 3 out of the 4 valve caps without damage. Unfortunately the last one was really seized and even though I was being careful the thread came away with the cap which now exposes the valve needle and prevents me from putting a cap on that valve.
Am I going to need a whole new tyre monitor transmitter kit (example link below), or can I just get a valve put on there (and still retain the tyre monitoring)?
http://www.hwmastonmartin.co.uk/parts/aston-martin...
Thanks
None of them would undo by hand even after soaking overnight in WD40, but with mole grips I managed to remove 3 out of the 4 valve caps without damage. Unfortunately the last one was really seized and even though I was being careful the thread came away with the cap which now exposes the valve needle and prevents me from putting a cap on that valve.
Am I going to need a whole new tyre monitor transmitter kit (example link below), or can I just get a valve put on there (and still retain the tyre monitoring)?
http://www.hwmastonmartin.co.uk/parts/aston-martin...
Thanks
the valves come with the tyre pressure monitoring sensor, the valve piece can not be brought on there own, you could swap the valves onto the old sensors if they do nor break on removal, if you have to use new sensors they will need to be programmed to the car, the other option is to replace the sensor valves with standard 414 rubber valves as used by all tyre fitting places, disconnect the tpms module (very easy to do) and manage without the system,
On some cars they work perfectly fine on others they can be quite temperamental, making sure the gauge that is used to check the pressures is accurate is the biggest issue, many tyre places, petrol stations and gauges supplied for home use are not calibrated and can be surprisingly inaccurate, also the tyre pressures must be set when cold, and finally setting the tyre pressures in extremes of ambient temperature such as sub zero, will also cause incorrect settings, so the system although not perfect can be hindered further and blamed for being useless when it is actually working correctly and it is external elements that are at fault,
My experience, for what its worth:
Just after i got my V8V i took it on a 200 mile round trip during which the warning came up then dissappeared 6 times in total.
I had a quick chat with the Technician at my local dealer who advised me to check the pressures in case they were out. I checked them cold the next day and found them all to be 3psi down so i corrected them all and have had no problems since.
I can only assume that the pressure was marginal for the sensor and only flagged up a warning occasionally.
Andy
Just after i got my V8V i took it on a 200 mile round trip during which the warning came up then dissappeared 6 times in total.
I had a quick chat with the Technician at my local dealer who advised me to check the pressures in case they were out. I checked them cold the next day and found them all to be 3psi down so i corrected them all and have had no problems since.
I can only assume that the pressure was marginal for the sensor and only flagged up a warning occasionally.
Andy
rick-derby- said:
the valves come with the tyre pressure monitoring sensor, the valve piece can not be brought on there own, you could swap the valves onto the old sensors if they do nor break on removal, if you have to use new sensors they will need to be programmed to the car, the other option is to replace the sensor valves with standard 414 rubber valves as used by all tyre fitting places, disconnect the tpms module (very easy to do) and manage without the system,
Rick, thanks for your reply.I'm still finding it crazy that the valve core (insert) cannot be bought by itself whereas on nearly every other car manufacturer that uses a TPMS you can buy a replacement valve body or core without the need for an entire new sensor/valve part. I know (after a bit of research) that on the V8V the TPMS system is (was?) made by SmarTire however according to their website they have now abandonded the passenger car market (http://www.smartire.com/automotive). Maybe this explains the lack of replacement parts?
So, as the only way seems to be to buy a complete new TPMS sensor/valve part, are you saying that it might be possible to swap the valve core over for the broken one so it works without the need to reprogram the entire TPMS system (which I've been told would require all 4 wheels and tyres off to get the other TPMS module numbers to reprogram)? And then just throw away the parts not used.
Thanks
the best way to remove seized on metal valve caps is to carefully grind the metal cap on one side using a dremel until u can see the thread of the valve then the cap will come off easily without breaking anything .but as yours are broken already this will not help. but some dealers will be able to help supply just a valve core for you to fit on your old sensor and save the need for reprograming the system or buying new sensor .
oldboyswithtoys said:
the best way to remove seized on metal valve caps is to carefully grind the metal cap on one side using a dremel until u can see the thread of the valve then the cap will come off easily without breaking anything .but as yours are broken already this will not help. but some dealers will be able to help supply just a valve core for you to fit on your old sensor and save the need for reprograming the system or buying new sensor .
Do'h, wish I'd thought of using my Dremel, that's a good idea. TBH I was very surpised to see the tread on the valve snap off so easily.I'll see if any dealers will sell me a valve core as the quote I've had so far to replace (this is for 1 valve remember) is nigh on £500.
to Rick again.
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