Can anyone help he with sourcing the correct guage to screw onto the schraeder valve on my fuel rail to check pressure?
I have this intermittent stalling problem,(common) and want to see if the problem is rooted in fuel delivery (bad fuel pump relay perhaps).
Any reason not to leave the guage on the valve while driving, so that I can
check pressure next time she stalls?
Anyone know the correct operating fuel pressure? kpa's or psi's
Thanks,
Armie
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Luck favours the prepared.

If you can trust it not to fall off while driving. I would still suspect the relay is your problem. If you stall because the relay quit working, you will loose fuel pressure anyway, your car will run until it runs out of fuel in the top of the line.
When fuel pumps go, they normally don't come back on without a long wait to cool off. Carry a new relay with you instead of a pressure gauge.

Klaus
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(V♂LV♂s 1975 164, 1995 854T, 1998 V70R)

Hi Klaus,
Thanks. I can always count on your advice for some of the more difficult stuff.
I've researched this symptom now for the past 7 months or more, (Matthew's Volvo site has a huge string dedicated to this problem) and find that there are a variety of possible causes. It's becoming a mission thru process of elimination to get the damn thing fixed.
Cheers!
Armie
--
Luck favours the prepared.