At 04:35 PM 10/27/99 -0500, you wrote:
>I just got a new IAT sensor to play with at the track. I had to take the
>old one off to get it's part #. It was COVERED in a thick layer of burnt
>motor oil. Looked like carbon buildup. I have a distinct feeling that
>there isn't supposed to be any oil on the sensor. =( Which leads me to
>believe I have a blown intake manifold gasket. I also gets some pinging,
>but I have the MP SBEC and run 92/93 octane. Oh ya, truck is a 93 Dak V8.
>Any help would be greatly appreciated.
Thanks to a fellow DMLer, Ryan K, here's part of what he sent me:
To determine if there is a proper seal, remove the PCV (Positive Crankcase
>Ventilation) valve from the right hand valve cover, but leave the PCV
>valve attached to the hose from the intake manifold. Remove the breather
hose
>from the left-hand valve cover that goes to the air cleaner. Plug-off the
>connection at the valve cover. With the engine idling, place your thumb
>over the opening where the PCV valve was located. After 10-15 seconds you
>should feel pressure, which indicates that the gasket is sealing. If you
>feel a vacuum, the gasket is leaking and needs to be repaired. The best
>repair is to remove the intake manifold, remove the bottom plate and
>discard the failed or leaking gasket. Clean all the surfaces thoroughly,
>and apply a bead of Mopar RTV sealant, PN 82300235 to the bottom of the
manifold.
>Re-install the plate, let dry and then re-install the manifold. Refer to
>the service manual for manifold installation tips and details.
I'm doing the test myself.
Message 74 since Oct. 23/99.
Bob. Southern Ontario, Canada.
'97 Dakota CC Sport, FR, 5.2L, 3.55 SG, auto.
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