Loss of power

Hi,

If the oil pressure went back to 0, it sounds like there could be a pressure issue. I say that because of the ticking you heard.

Is the sound it's making loud enough for you to record and upload for me to hear?

Here is what I would suggest. Contact a local parts store and ask if they have a mechanical oil pressure gauge that you can borrow. Many parts stores lend tools.

Once you get one, remove the new sending unit and install the mechanical gauge. Start the engine and see what is indicated using the mechanical gauge.

By doing this, it eliminates the possibility of an electrical issue causing the low reading. IF you look at the attachments below, they provide the manufacturer's pressure specifications.

Do this and let me know what you find. Also, since it happened after the oil change, just check to make sure nothing was left disconnected or accidentally disconnected such as wiring or vacuum hoses.

One more suggestion, check to see if there are diagnostic trouble codes that are stored in the truck's computer. This has an obd1 system that doesn't require a scan tool for code retrieval. Follow this link:

https://www.2carpros.com/articles/ford-lincoln-mercury-obd1-1995-and-earlier-diagnostic-trouble-code-definition-and-retrieval

Take care and I'll watch for your reply.

Joe

See pic below.

Hey Joe,

I was just wondering if you received my reply from earlier this week. Some additional information. When I rechecked the pressure with the mech. gauge, it was 30psi upon startup, cold then slowly dropped to 20psi and then the needle started extremely fast bouncing from 20 to 0. It then settled after a few revs and warmup to about 10psi. I have attached two links to videos of this.

https://photos.app.goo.gl/KkBBmQeTCwkLiV8i9

https://photos.app.goo.gl/brBt6csrU12XjAjEA

Joe,

I have been sending emails to you but no response. Let me know if you are getting them or not. If not, I will resubmit the information. thanks, Tony

Hi Anthony,

I haven't received anything. I just saw this now. Can you send the info the same way as you did the last one asking if I received them?

Let me know.

Joe

Thanks Joe.

I did as you suggested and connected a pressure gauge, I put together with parts I had. At cold idle I read 25psi. After a short time, it began to drop which at one point was rapidly bouncing between 20psi and 10psi. Once reaching operating temperature. it was about 7psi and if I increased the rpm it went to near zero. I don't know if the flexible hose I used was too large an ID (1/4" +/-) and with that much air between the block and gauge caused the rapid pulsing? But one thing I did discover is that the shop used 5W30 instead of 10W30. I am attaching two links to show the pressure gauge readings (a few seconds of video each).
As to the computer codes, I had a tough time with this. The flashes were so fast, I didn't know if I was reading the right number or not. But they are mostly emission related.
If I did it right, they are as follows: 12,16,17,62,86,34,76, and 18.

https://photos.app.goo.gl/brBt6csrU12XjAjEA

https://photos.app.goo.gl/KkBBmQeTCwkLiV8i9