I tend to agree with DB... if it was actually the oil pump (spring broken)
you would have blown an oil filter and never gotten out of the yard.....
I'd suspect a bad sending unit (or stuck one) and the very last option
would be a gauge... but they are usually either go or no go when they
break.... might try removing the sending unit and cleaning it and cycling
it a few times
john
----- Original Message -----
From: "old dirtbeard" <dirtbeard@pacbell.net>
To: <pethier@comcast.net>; <shop-talk@autox.team.net>
Sent: Saturday, December 14, 2013 9:59 AM
Subject: Re: [Shop-talk] Oil-pressure gauge goes nuts on Suburban.
> Hi Phil,
>
> Just a guess, but perhaps the viscosity of the oil at 11 above was
> thick enough to jam the sender unit wide open and now it is stuck there.
> Maybe with heat and cycles it will free up again. Just a guess...
>
> best,
> doug
> ________________
> '72 BSA B50SS
> '74 Moto Guzzi 850T
>
> '01 HD XHL 883
> '03
> GMC Cargo Van
> '07 Aprilia SXV 550
> '13 Aprilia Tuono V4R
> To: shop-talk@autox.team.net
> Sent: Friday, December 13,
> 2013 9:48 PM
> Subject: [Shop-talk] Oil-pressure gauge goes nuts on Suburban.
> 2004 Chevrolet Suburban. Picked up my truck after it had been sitting out
> in
> the 11-degree-F cold for a while. Started OK. The oil-pressure gauge was
> pegged WAY past the end. Stopped the truck after it was warm and went
> into a
> store. Came out and turned on the ignition. Needle went to full scale.
> Started the engine and needle went to full-on pegged again. Stayed that
> way
> until I shut it off in the garage. Needle went to zero. Ignition on,
> back to
> full scale. Restart engine, back to superpeg again.
>
> All the other gauges
> seem to be acting normally.
>
> Anybody else ever seen anything like this?
>
> Phil
> Ethier West Side Saint Paul Minnesota USA
> 1973 Triumph Stag LE22439UBW "uncle
> jack", Sapphire Blue
> 2004 Suburban 8.1, Sport Red, the only automatic of the
> bunch
> 2005 Lotus Elise, Bordeaux Red Pearl
> 2007 Saturn Ion 3 2.4, Berry Red
> pethier@comcast.net
> http://www.flickr.com/photos/pethier
> http://www.flickr.com/groups/triumphtransamerica
> http://www.mnautox.com
> http://www.mntriumphs.org2004 Suburban.
> _______________________________________________
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