Help! No oil pressure!

[P & D]

Ryan

I just ran mine this morning, had 60 psi
at cold (45 degrees out) and once warmed up had 40 on road.

Hope that helps

Paul Potter

Hesperia CA

87PT38

8V92

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From:
WanderlodgeForum@yahoogroups.com [mailto:WanderlodgeForum@yahoogroups.com] On Behalf Of Ryan Wright

Sent: Sunday, October 12, 2008
5:32 PM

To:
WanderlodgeForum@yahoogroups.com

Subject: Re: [WanderlodgeForum]
Re: Help! No oil pressure!

Thanks
for the replies, folks. I pulled the coach forward about 30

feet Friday afternoon and the gauge began reading. I don't think it

was a loose wire, maybe the oil just needed to warm up? I don't ever

remember seeing 0psi on the gauge when cold, though, I'm sure it would

have alarmed me in the past and I'd have asked here if it were

supposed to be this way. Other 8V92 owners, what's your oil pressure

gauge do upon a cold start?



Other than showing 0psi for a few minutes after a cold start (repeated

after starting on Saturday & Sunday mornings, too), everything seemed

OK. Ran @ ~30psi on the freeway, high idled @ ~15psi. idle @ ~5psi.

Engine sounds beautiful... but I'm going to have to dig into this,

anyway, because it seems abnormal to me.



Appreciate the replies.



-Ryan

'86 PT-40 8V92



On Sat, Oct 11, 2008 at 8:10 AM, Pete Masterson <"aeonix1%40mac.com"> wrote:

> About the only thing you can do is to install a mechanical oil

> pressure gauge on (or near) the engine. (I'd have to know a lot more

> about an 8v92 to tell you exactly where to install it -- but a diesel

> mechanic familiar with that engine could probably advise you.)

>

> My guess was that the oil was so cold that it didn't registers much

> pressure -- but if/when you revved up, then some pressure should have

> shown if the gauge was working. At idle, the 8v92 has a very low oil

> pressure.

>

> Ground straps work loose all the time due to vibration and are often

> a source of problems. Partial or intermittent contact can make it

> difficult to run down loose straps.

>

> Pete Masterson

> '95 Blue Bird Wanderlodge WBDA 42

> "aeonix1%40mac.com"

> On the road near Lancaster,
PA

>

> On Oct 10, 2008, at 6:03 PM, Ryan Wright wrote:

>

>> Hi Mike,

>>

>> Nope, no gauge in the engine compartment, unfortunately.

>>

>> Pete: It's cold-cold... I turned the engine pre-heat on about half an

>> hour ago, so we'll see if that changes anything. She did start a bit

>> hard due to the cold. Maybe that's just it, oil is too cold to

>> register much pressure? I'll check the ground straps too.

>>

>> Without a working oil pressure gauge, is there any way to verify the

>> oil pump is doing it's job? The engine sounded just fine when I had it

>> running...

>>

>> -Ryan

>>

>> On Fri, Oct 10, 2008 at 2:39 PM, mbulriss <"mbulriss%40yahoo.com"> wrote:

>>> Ryan,

>>>

>>> Do you have a oil pressure guage in the engine compartment by the

>>> rear

>>> starter switch? What does that one say?

>>

>> ------------------------------------

>>

>> Yahoo! Groups Links

>>

>>

>>

>

>

[erniecarpet@...]

On my 6v, the oil pressure will be close to 60 after warmup but sometimes settles to 40. I don't know why the fluctuation- just a "bird', I guess.

Ernie Ekberg
83PT40
Weatherford, Texas

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[Gregory OConnor]

pickup screen, ;pump ;oil viscosity ;oil level . funny how everyone
blames faulty electronics then searches for a gauge and sender that
will prove spec oil pressure. Its like asking everyone if your 401 is
secure then setteling on belief in the experts who's answer you most
want to hear.

the 3208's have an inherent problem with the pickup tubes cracking
then falling off. I have had that happen several times then again the
trucks had over 300,000 and used off road. average Mechanical oil
gauges are less acurate than the average electronic units. the better
mechanical gauges are up in $300. Since ohms is a measure of
resistance and resistance is not a factor of voltage, only complete
connection of the power used to test the resistance is important.
(some voltage and a good ground)?????????--- In
WanderlodgeForum@yahoogroups.com, erniecarpet@... wrote:

[Ryan Wright]

Will do, thanks Greg.

-Ryan

On Mon, Oct 13, 2008 at 10:03 AM, Gregory OConnor wrote:
> Ryan, you may want to check ohms into the harness at idle from the
> sensor and ohms out of the harness at idle at the dash to see that
> they match. if not that may prove a wire issue and not a hard part.