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Date:         Thu, 12 Feb 2004 10:36:31 -0500
Reply-To:     vw4x4@FYI.NET
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Eric Zeno <vw4x4@FYI.NET>
Subject:      Re: Oil pressure light 87 Vanagon
Comments: To: vwelkers <vwelkers@SYV.COM>
In-Reply-To:  <10162645.1076598870265.JavaMail.Administrator@atp>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

Look for the wiring that grounds the instrument cluster to be bad. "Slowly illuminates" Is not an engine problem, but an electrical voltage problem. Ether thru a bad ground, or the voltage stabilizer. Eric

vwelkers wrote:

>Hello to all- > >I used to be on the list years ago and have recently been added in digest >mode... I'm stumped with a oil pressure light problem so I'm looking for >help! > >The oil pressure light in my 1987 Vanagon blinks as expected when turning >the key before starting the engine, then is "off" after starting the van, >then after approx. 2 seconds, slowly illuminates and stays "on". > >It's a rebuilt engine with approx 4000 miles. New senders were installed on >rebuild (0.3 bar and 0.9 bar). I use 20W-50 oil and Mahn oil filter. > >I removed the 0.3 bar sender and measured oil pressure. It is 45 PSI at >idle and drops to 15 PSI after engine warms up (temp needle in middle of >guage). Goes to 20-25 PSI when engine is 2000+ RPM. > >0.9 bar sender measures open to chassis gnd when engine not running and >under 60 ohms after starting engine. > >0.3 bar sender measures 10 ohms to chassis gnd when engine not running and >open when engine running. > >I've even tried a different instrument cluster assy to test the dynamic oil >pressure control board and it does the same thing. > >Any help appreciated! Please reply to vwelkers@highstream.net since I am in >digest mode. > >Thanks- > >Vic Welker >Santa Ynez, CA >87 vanagon GL Wolfsburg >93 Passat GLX >94 Jetta GL > > > >


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