oil pressure guage

Submitted: Tuesday, Jun 10, 2003 at 22:05
ThreadID: 5398 Views:1336 Replies:5 FollowUps:2
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is there any way of testing an oil pressure guage in a 80 series . it reads low even with a new switch in the engine . could it need re calibrating
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Reply By: Truckster (Vic) - Tuesday, Jun 10, 2003 at 22:12

Tuesday, Jun 10, 2003 at 22:12
Try
http://www.lcool.org/technical/80_series/80_series_technical.html
AnswerID: 22255

Reply By: Trevor - Tuesday, Jun 10, 2003 at 23:01

Tuesday, Jun 10, 2003 at 23:01
Scott,
Post No 4861 has some info on oil pressure gauges as applied to a Jackaroo. The values for an 80 series may be different, but the basics would be the same.
A workshop manual might give you the extra info you require.

Cheers,
Trev
AnswerID: 22267

Reply By: Rusty - Tuesday, Jun 10, 2003 at 23:21

Tuesday, Jun 10, 2003 at 23:21
Scott

Mine reads low as well. Very low in fact. I had the actual engine oil pressure measured with a master gauge and was told that at idle I had 27psi. oil pressure but the unit on the dash was just above zero. The book says that engine oil pressure should be 4psi at idle so mine was ok. Though you would never know looking at the gauge

Regards
Rusty
AnswerID: 22269

Follow Up By: Member - Andrew- Wednesday, Jun 11, 2003 at 12:44

Wednesday, Jun 11, 2003 at 12:44
This problem was common with turbo diesels. Apparently , if you jumped up and down enough, Toyota gave a full replacement back then.
andrew
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FollowupID: 14663

Reply By: Eric - Wednesday, Jun 11, 2003 at 22:06

Wednesday, Jun 11, 2003 at 22:06
Scott.
If you want a cheap way of callibrating your gauge, make an adaptor from a bicycle pump hose to your gauge sender and then connect to your spare tyre, Eric.
AnswerID: 22344

Follow Up By: scott - Thursday, Jun 12, 2003 at 18:43

Thursday, Jun 12, 2003 at 18:43
eric
thanks for the reply . could you please explain how to do it and how it works. is it permanent? thanks again
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FollowupID: 14712

Reply By: Eric - Thursday, Jun 12, 2003 at 21:56

Thursday, Jun 12, 2003 at 21:56
Scott.
The air pressure in your spare tyre will operate the oil pressure sender in the same way as the oil does, so all you need is a nut with the same thread as the engine block soldered to the connector for the valve from a bike pump. Measure the pressure in the tyre with a good tyre gauge, then connect the oil pressure sender to the tyre and you should get the same reading. You will have to extend the wire to reach the tyre and you must earth the sender with a jumper lead or another wire. Is it permanent? I dont understand your question, the calibration should ok until something breaks or wears out. the most common cause of failure of pressure gauges is craking of the bronze diaphram, this usualy shows up as an oil leak. Eric
AnswerID: 22383

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