C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

sending unit replacement L98

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Old Nov 29, 2013 | 03:33 AM
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Default sending unit replacement L98

I have a 1987 L98 and the oil pressure has always been good - but not now. I an thinking it is the sensor. I found the sensor - behind the distributor and low on the driver's side. it looks like a problem to get to.

Is there an easy way to access this? I heard mention of cutting an access hole (through the cowling??). The wiper motor is in the way - does it help to remove it?? It is covered in a vacuum line and wires - it is tight. What cha think??
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Old Nov 29, 2013 | 05:54 AM
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Easiest to remove the dist for access
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Old Nov 29, 2013 | 07:28 AM
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Originally Posted by vetteoz
Easiest to remove the dist for access
..WW
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Old Nov 29, 2013 | 11:05 AM
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Default Picture of oil pressure sensor with distributor out L98

I did take the distributor out and replaced the sensor - it did not seem to solve my low oil pressure issue, but I have a good picture. Thanks, off to the next thing - dropping the pan

http://forums.corvetteforum.com/attachment.php?attachmentid=47749618&stc =1&d=1385741010[/URL]
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Old Nov 29, 2013 | 11:20 AM
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Use this tool and any extensions, etc to get to it. I replaced mine without removing anything other than the connector for the switch.

http://www.autozone.com/autozone/acc...er=141490_0_0_
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Old Nov 29, 2013 | 09:55 PM
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Its real easy to drop the oil pan and look at some bearings. You can do it in an afternoon. Thats what I'd do anyway.
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Old Nov 30, 2013 | 07:49 AM
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Before tearing into the motor further, I would first check the oil pressure with a mechanical gauge to make sure the oil pressure really is low....WW
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Old Nov 30, 2013 | 10:39 AM
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I think this is a low pressure switch, the other one with a single connector in the gauge
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Old Nov 30, 2013 | 11:46 AM
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I agree. The one with two wires is the pressure switch and the one with one wire is the pressure sensor. The arrow seems to be pointing at either so not sure which he changed. If he changed the one with two wires that could be why it still shows low pressure.
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