Schraeder Spark Plug Tyre Pump,

I wouldn't want one. I have anFZJ Toyota. The plugs are hard enough to get out at the best of times

Trevor,
I'd like to think the computer, electronics etc is better designed than that.
All you are doing is artificially creating a faulty spark plug or plug lead. If the computer, coil or electronics went belly up in either of those scenario's you'd be entitled to ask some very pointed questions.

Geoff.

As I mentioned, the old man has one which I may throw in the back for an absolute emergency but given the responses to my initial post (#19682) it sort of comes down to "why take the risk". The responses were inconclusive but raised enough doubts for me.

I now have a reasonable 12v compressor. I was interested in these things as a backup but I will probably now rather use my Michelin foot pump as emergency backup if the compressor fails. Wouldn't want to have to resort to such manual labour but better than being stuck will deflated tyres and no other option.

I will reconsider of course if anyone with a late model vehicle can verify to their usefulness from actual experience.

Thanks anyway for pointing out the ebay posting

Cheers
Trev

Trev,
I used one on my NH Pajero (1992 model) with no ill effects. Admittedly the computers are a bit more advanced these days but it still shouldn't cause any problems. Plugs on the NM are too hard to get at so it's been consigned to the shed.
Worked absolutely brilliantly. Pumped up a tyre in no time. PITA to get plugs out when engine hot though.
Great thing to carry as a backup. If your plugs are easy to get at then it'd be my preference over a cheap 12V compressor.

Cheers, John