Toyota oil gauge stopped working and oil still flowing

My '90 toyota pickup oil pressure dial has stopped working after I changed
the oil and filter. I only drove it a few miles when I noticed it was not
working. Truck has 193K miles and new oil seal was put in 3 months ago.

I waited until the next morning so all the oil would be settled in the pan.
With the oil cap off I started the truck so I could see if the oil would pump
from the pan to the rockers. As a result I did see the oil pumping by and
spitting out the cap hole. With that, I the possible problems are:

1) Brand new oil filter was clogged from mfgr - Probably not, oil is flowing
2) Oil pump bad - Probably not, I see oil flowing
3) Oil sensor bad - Seems most likely, need to check wiring first (6)
4) Blown fuse for instraments - Checked fuse panel and nothing was blown
5) Oil Pressure gauge is bad - Might be, but, need to troubleshoot sensor
first
6)Oil sensor wiring came loose -

Can anyone tell me where the sensor is mounted or where I can check wiring?

Thanks, Bill

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Message posted via [url]http://www.carkb.com[/url]

Mine did the same thing, also right after the oil change. I haven't done any
checking yet, other than to verify oil IS still flowing. I am under the
impression that the sending unit is bad. I had this problem in my 91 and it
to was the sending unit. My current Toy is a 90 4 Runner 3VZE

Searcher
Make sure oil is flowing

On Tue, 23 May 2006 04:11:43 GMT, "South4t via CarKB.com" <u19472@uwe>
wrote:
[color=blue]
>My '90 toyota pickup oil pressure dial has stopped working after I changed
>the oil and filter. I only drove it a few miles when I noticed it was not
>working. Truck has 193K miles and new oil seal was put in 3 months ago.
>
>I waited until the next morning so all the oil would be settled in the pan.
>With the oil cap off I started the truck so I could see if the oil would pump
>from the pan to the rockers. As a result I did see the oil pumping by and
>spitting out the cap hole. With that, I the possible problems are:
>
>1) Brand new oil filter was clogged from mfgr - Probably not, oil is flowing
>2) Oil pump bad - Probably not, I see oil flowing
>3) Oil sensor bad - Seems most likely, need to check wiring first (6)
>4) Blown fuse for instraments - Checked fuse panel and nothing was blown
>5) Oil Pressure gauge is bad - Might be, but, need to troubleshoot sensor
>first
>6)Oil sensor wiring came loose -
>
>Can anyone tell me where the sensor is mounted or where I can check wiring?
>
>Thanks, Bill[/color]

In my old '89, the oil sending unit was above and a little back from
the oil filter.

Skip

Skip wrote:[color=blue][color=green]
>>My '90 toyota pickup oil pressure dial has stopped working after I changed
>>the oil and filter. I only drove it a few miles when I noticed it was not[/color]
>[quoted text clipped - 16 lines][color=green]
>>
>>Thanks, Bill[/color]
>
>In my old '89, the oil sending unit was above and a little back from
>the oil filter.
>
>Skip[/color]


OK all,
I figured it out. I was a wire that disconnected itself when i changed the
oil filter. I just had the truck in the shop where I was rapped and they did
not connect it correctly. The oil pressure sending unit is a round device
that is connected to the block and is directly below the oil filter. There is
also a wiring harness in the area that has the female connector. So, just
connect the two and your oil gauge is back in business.

Laters, Bill

--
Message posted via [url]http://www.carkb.com[/url]

I'm out to check mine now, I'll let you all know shortly.

Searcher

Well, whaddaya know, I got a broken wire. Now I got a project for the day.
Thanks S4t

Searcher